added Revit 2022 SDK minus except *rvt and *rfa

SDK/Samples/ImportExport/CS/Command.cs

@@ -0,0 +1,89 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Windows.Forms;
+
+using Autodesk.Revit;
+using Autodesk.Revit.UI;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// To add an external command to Autodesk Revit 
+    /// the developer should implement an object that 
+    /// supports the IExternalCommand interface.
+    /// </summary>
+    [Autodesk.Revit.Attributes.Transaction(Autodesk.Revit.Attributes.TransactionMode.Manual)]
+    [Autodesk.Revit.Attributes.Regeneration(Autodesk.Revit.Attributes.RegenerationOption.Manual)]
+    [Autodesk.Revit.Attributes.Journaling(Autodesk.Revit.Attributes.JournalingMode.NoCommandData)]
+    public class Command : IExternalCommand
+    {
+        /// <summary>
+        /// Implement this method as an external command for Revit.
+        /// </summary>
+        /// <param name="commandData">An object that is passed to the external application 
+        /// which contains data related to the command, 
+        /// such as the application object and active view.</param>
+        /// <param name="message">A message that can be set by the external application 
+        /// which will be displayed if a failure or cancellation is returned by 
+        /// the external command.</param>
+        /// <param name="elements">A set of elements to which the external application 
+        /// can add elements that are to be highlighted in case of failure or cancellation.</param>
+        /// <returns>Return the status of the external command. 
+        /// A result of Succeeded means that the API external method functioned as expected. 
+        /// Cancelled can be used to signify that the user cancelled the external operation 
+        /// at some point. Failure should be returned if the application is unable to proceed with 
+        /// the operation.</returns>
+        public Autodesk.Revit.UI.Result Execute(ExternalCommandData commandData,
+        ref string message, Autodesk.Revit.DB.ElementSet elements)
+        {
+            try
+            {
+                // Verify active document
+                if (null == commandData.Application.ActiveUIDocument.Document)
+                {
+                    message = "Active view is null.";
+                    return Autodesk.Revit.UI.Result.Failed;
+                }
+                
+                MainData mainData = new MainData(commandData);
+                // Show the dialog
+                using (MainForm mainForm = new MainForm(mainData))
+                {
+                    if (mainForm.ShowDialog() == DialogResult.Cancel)
+                    {
+                        return Autodesk.Revit.UI.Result.Cancelled;
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                message = ex.ToString();
+                return Autodesk.Revit.UI.Result.Failed;
+            }
+
+            return Autodesk.Revit.UI.Result.Succeeded;
+        }
+    }
+}

SDK/Samples/ImportExport/CS/Export/ExportBaseOptionsData.cs

@@ -0,0 +1,480 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Text;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+
+using Autodesk.Revit;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// Data class which stores lower priority information for exporting dwg or dxf format
+    /// </summary>
+    public class ExportBaseOptionsData
+    {
+        #region Class Member Variables
+        /// <summary>
+        /// String list of Layers and properties used in UI
+        /// </summary>
+        List<String> m_layersAndProperties;
+
+        /// <summary>
+        /// List of Autodesk.Revit.DB.PropOverrideMode
+        /// </summary>
+        List<Autodesk.Revit.DB.PropOverrideMode> m_enumLayersAndProperties;
+
+        /// <summary>
+        /// String list of Layer Settings used in UI
+        /// </summary>
+        List<String> m_layerMapping;
+
+        /// <summary>
+        /// String list of layer settings values defined in Revit 
+        /// </summary>
+        List<String> m_enumLayerMapping;
+
+        /// <summary>
+        /// Layer setting option to export
+        /// </summary>
+        String m_exportLayerMapping;
+
+        /// <summary>
+        /// String list of Linetype scaling used in UI
+        /// </summary>
+        List<String> m_lineScaling;
+
+        /// <summary>
+        /// PropOverrideMode Option to export
+        /// </summary>
+        Autodesk.Revit.DB.PropOverrideMode m_exportLayersAndProperties;
+
+        /// <summary>
+        /// List of Autodesk.Revit.DB.LineScaling defined in Revit
+        /// </summary>
+        List<Autodesk.Revit.DB.LineScaling> m_enumLineScaling;
+
+        /// <summary>
+        /// Line scaling option to export
+        /// </summary>
+        Autodesk.Revit.DB.LineScaling m_exportLineScaling;
+
+        /// <summary>
+        /// String list of Coordinate system basis
+        /// </summary>
+        List<String> m_coorSystem;
+
+        /// <summary>
+        /// List of values whether to use shared coordinate system
+        /// </summary>
+        List<bool> m_enumCoorSystem;
+
+        /// <summary>
+        /// Coordinate system basis option to export
+        /// </summary>
+        bool m_exportCoorSystem;
+
+        /// <summary>
+        /// String list of DWG or DXF unit
+        /// </summary>
+        List<String> m_units;
+
+        /// <summary>
+        /// List of Autodesk.Revit.DB.ExportUnit values defined in Revit
+        /// </summary>
+        List<Autodesk.Revit.DB.ExportUnit> m_enumUnits;
+
+        /// <summary>
+        /// Export unit option to export
+        /// </summary>
+        Autodesk.Revit.DB.ExportUnit m_exportUnit;
+
+        /// <summary>
+        /// String list of solid used in UI
+        /// </summary>
+        List<String> m_solids;
+
+        /// <summary>
+        /// List of Autodesk.Revit.DB.SolidGeometry defined in Revit
+        /// </summary>
+        List<Autodesk.Revit.DB.SolidGeometry> m_enumSolids;
+
+        /// <summary>
+        /// Solid geometry option to export
+        /// </summary>
+        Autodesk.Revit.DB.SolidGeometry m_exportSolid;
+
+        /// <summary>
+        /// Whether to create separate files for each view/sheet
+        /// </summary>
+        bool m_exportMergeFiles;
+
+        //Export rooms and areas as polylines
+        bool m_exportAreas;
+        #endregion
+
+        #region Class Properties
+        /// <summary>
+        /// String collection of Layers and properties used in UI
+        /// </summary>
+        public ReadOnlyCollection<String> LayersAndProperties
+        {
+            get 
+            { 
+                return new ReadOnlyCollection<String>(m_layersAndProperties); 
+            }
+        }        
+
+        /// <summary>
+        /// Collection of Autodesk.Revit.DB.PropOverrideMode
+        /// </summary>
+        public ReadOnlyCollection<Autodesk.Revit.DB.PropOverrideMode> EnumLayersAndProperties
+        {
+            get 
+            { 
+                return new ReadOnlyCollection<Autodesk.Revit.DB.PropOverrideMode>(m_enumLayersAndProperties); 
+            }
+        } 
+
+        /// <summary>
+        /// PropOverrideMode Option to export
+        /// </summary>
+        public Autodesk.Revit.DB.PropOverrideMode ExportLayersAndProperties
+        {
+            get 
+            { 
+                return m_exportLayersAndProperties; 
+            }
+            set 
+            { 
+                m_exportLayersAndProperties = value; 
+            }
+        }
+
+        /// <summary>
+        /// String collection of Layer Settings used in UI
+        /// </summary>
+        public ReadOnlyCollection<String> LayerMapping
+        {
+            get 
+            {
+                return new ReadOnlyCollection<String>(m_layerMapping); 
+            }
+        }  
+
+        /// <summary>
+        /// String collection of layer settings values defined in Revit  
+        /// </summary>
+        public ReadOnlyCollection<String> EnumLayerMapping
+        {
+            get 
+            {
+                return new ReadOnlyCollection<String>(m_enumLayerMapping); 
+            }
+        }
+
+        /// <summary>
+        /// Layer setting option to export
+        /// </summary>
+        public String ExportLayerMapping
+        {
+            get 
+            { 
+                return m_exportLayerMapping; 
+            }
+            set 
+            { 
+                m_exportLayerMapping = value;
+            }
+        }
+
+        /// <summary>
+        /// String collection of Linetype scaling used in UI
+        /// </summary>
+        public ReadOnlyCollection<String> LineScaling
+        {
+            get 
+            {
+                return new ReadOnlyCollection<String>(m_lineScaling); 
+            }
+        }
+
+        /// <summary>
+        /// Collection of Autodesk.Revit.DB.LineScaling defined in Revit
+        /// </summary>
+        public ReadOnlyCollection<Autodesk.Revit.DB.LineScaling> EnumLineScaling
+        {
+            get 
+            { 
+                return new ReadOnlyCollection<Autodesk.Revit.DB.LineScaling>(m_enumLineScaling); 
+            }
+        }      
+
+        /// <summary>
+        /// Line scaling option to export
+        /// </summary>
+        public Autodesk.Revit.DB.LineScaling ExportLineScaling
+        {
+            get 
+            { 
+                return m_exportLineScaling; 
+            }
+            set 
+            { 
+                m_exportLineScaling = value;
+            }
+        }
+
+        /// <summary>
+        /// String collection of Coordinate system basis
+        /// </summary>
+        public ReadOnlyCollection<String> CoorSystem
+        {
+            get 
+            {
+                return new ReadOnlyCollection<String>(m_coorSystem); 
+            }
+        }
+
+        /// <summary>
+        /// Collection of values whether to use shared coordinate system
+        /// </summary>
+        public ReadOnlyCollection<bool> EnumCoorSystem
+        {
+            get 
+            { 
+                return new ReadOnlyCollection<bool>(m_enumCoorSystem); 
+            }
+        }   
+
+        /// <summary>
+        /// Coordinate system basis option to export
+        /// </summary>
+        public bool ExportCoorSystem
+        {
+            get 
+            { 
+                return m_exportCoorSystem; 
+            }
+            set 
+            { 
+                m_exportCoorSystem = value;
+            }
+        } 
+
+        /// <summary>
+        /// String collection of DWG unit
+        /// </summary>
+        public ReadOnlyCollection<String> Units
+        {
+            get 
+            {
+                return new ReadOnlyCollection<String>(m_units); 
+            }
+        }
+
+        /// <summary>
+        /// Collection of Autodesk.Revit.DB.ExportUnit values defined in Revit
+        /// </summary>
+        public ReadOnlyCollection<Autodesk.Revit.DB.ExportUnit> EnumUnits
+        {
+            get 
+            { 
+                return new ReadOnlyCollection<Autodesk.Revit.DB.ExportUnit>(m_enumUnits); 
+            }
+        }  
+
+        /// <summary>
+        /// Export unit option to export
+        /// </summary>
+        public Autodesk.Revit.DB.ExportUnit ExportUnit
+        {
+            get 
+            { 
+                return m_exportUnit; 
+            }
+            set 
+            { 
+                m_exportUnit = value; 
+            }
+        }    
+
+        /// <summary>
+        /// String collection of solid used in UI
+        /// </summary>
+        public ReadOnlyCollection<String> Solids
+        {
+            get
+            {
+                return new ReadOnlyCollection<String>(m_solids);
+            }
+        }
+
+        /// <summary>
+        /// Collection of Autodesk.Revit.DB.SolidGeometry defined in Revit
+        /// </summary>
+        public ReadOnlyCollection<Autodesk.Revit.DB.SolidGeometry> EnumSolids
+        {
+            get 
+            { 
+                return new ReadOnlyCollection<Autodesk.Revit.DB.SolidGeometry>(m_enumSolids);
+            }
+        }
+
+        /// <summary>
+        /// Property of solid geometry option to export
+        /// </summary>
+        public Autodesk.Revit.DB.SolidGeometry ExportSolid
+        {
+            get 
+            {
+                return m_exportSolid; 
+            }
+            set 
+            { 
+                m_exportSolid = value;
+            }
+        }
+
+        /// <summary>
+        /// Export rooms and areas as polylines
+        /// </summary>
+        public bool ExportAreas
+        {
+            get 
+            { 
+                return m_exportAreas;
+            }
+            set 
+            {
+                m_exportAreas = value; 
+            }
+        }
+
+        /// <summary>
+        /// Whether to create separate files for each view/sheet
+        /// </summary>
+        public bool ExportMergeFiles
+        {
+            get
+            {
+                return m_exportMergeFiles;
+            }
+            set
+            {
+                m_exportMergeFiles = value;
+            }
+        } 
+        #endregion
+
+
+        #region Class Member Methods
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        public ExportBaseOptionsData()
+        {
+            Initialize();
+        }
+
+        /// <summary>
+        /// Initialize values
+        /// </summary>
+        void Initialize()
+        {
+            //Layers and properties:
+            m_layersAndProperties = new List<String>();
+            m_enumLayersAndProperties = new List<Autodesk.Revit.DB.PropOverrideMode>();
+            m_layersAndProperties.Add("Category properties BYLAYER, overrides BYENTITY");
+            m_enumLayersAndProperties.Add(Autodesk.Revit.DB.PropOverrideMode.ByEntity);
+            m_layersAndProperties.Add("All properties BYLAYER, no overrides");
+            m_enumLayersAndProperties.Add(Autodesk.Revit.DB.PropOverrideMode.ByLayer);
+            m_layersAndProperties.Add("All properties BYLAYER, new Layers for overrides");
+            m_enumLayersAndProperties.Add(Autodesk.Revit.DB.PropOverrideMode.NewLayer);
+            
+
+            //Layer Settings:
+            m_layerMapping = new List<String>();
+            m_enumLayerMapping = new List<String>();
+            m_layerMapping.Add("AIA - American Institute of Architects standard");
+            m_enumLayerMapping.Add("AIA");
+            m_layerMapping.Add("ISO13567 - ISO standard 13567");
+            m_enumLayerMapping.Add("ISO13567");
+            m_layerMapping.Add("CP83 - Singapore standard 83");
+            m_enumLayerMapping.Add("CP83");
+            m_layerMapping.Add("BS1192 - British standard 1192");
+            m_enumLayerMapping.Add("BS1192");
+
+            //Linetype scaling:
+            m_lineScaling = new List<String>();
+            m_enumLineScaling = new List<Autodesk.Revit.DB.LineScaling>();
+            m_lineScaling.Add("Scaled Linetype definitions");
+            m_enumLineScaling.Add(Autodesk.Revit.DB.LineScaling.ViewScale);
+            m_lineScaling.Add("ModelSpace (PSLTSCALE = 0)");
+            m_enumLineScaling.Add(Autodesk.Revit.DB.LineScaling.ModelSpace);
+            m_lineScaling.Add("Paperspace (PSLTSCALE = 1)");
+            m_enumLineScaling.Add(Autodesk.Revit.DB.LineScaling.PaperSpace);
+
+            //Coordinate system basis
+            m_coorSystem = new List<String>();
+            m_enumCoorSystem = new List<bool>();
+            m_coorSystem.Add("Project Internal");
+            m_enumCoorSystem.Add(false);
+            m_coorSystem.Add("Shared");
+            m_enumCoorSystem.Add(true);
+
+            //One DWG unit
+            m_units = new List<String>();
+            m_enumUnits = new List<Autodesk.Revit.DB.ExportUnit>();
+            m_units.Add(Autodesk.Revit.DB.ExportUnit.Foot.ToString().ToLower());
+            m_enumUnits.Add(Autodesk.Revit.DB.ExportUnit.Foot);
+            m_units.Add(Autodesk.Revit.DB.ExportUnit.Inch.ToString().ToLower());
+            m_enumUnits.Add(Autodesk.Revit.DB.ExportUnit.Inch);
+            m_units.Add(Autodesk.Revit.DB.ExportUnit.Meter.ToString().ToLower());
+            m_enumUnits.Add(Autodesk.Revit.DB.ExportUnit.Meter);
+            m_units.Add(Autodesk.Revit.DB.ExportUnit.Centimeter.ToString().ToLower());
+            m_enumUnits.Add(Autodesk.Revit.DB.ExportUnit.Centimeter);
+            m_units.Add(Autodesk.Revit.DB.ExportUnit.Millimeter.ToString().ToLower());
+            m_enumUnits.Add(Autodesk.Revit.DB.ExportUnit.Millimeter);
+
+            m_solids = new List<String>();
+            m_enumSolids = new List<Autodesk.Revit.DB.SolidGeometry>();
+            m_solids.Add("Export as polymesh");
+            m_enumSolids.Add(Autodesk.Revit.DB.SolidGeometry.Polymesh);
+            m_solids.Add("Export as ACIS solids");
+            m_enumSolids.Add(Autodesk.Revit.DB.SolidGeometry.ACIS);
+
+            // Set default values
+            m_exportAreas = false;
+            m_exportSolid = Autodesk.Revit.DB.SolidGeometry.Polymesh;
+            m_exportLayerMapping = "AIA";
+            m_exportLayersAndProperties = Autodesk.Revit.DB.PropOverrideMode.ByEntity;
+            m_exportLineScaling = Autodesk.Revit.DB.LineScaling.PaperSpace;
+            m_exportMergeFiles = false;
+            m_exportCoorSystem = EnumCoorSystem[0];
+            m_exportUnit = Autodesk.Revit.DB.ExportUnit.Inch;
+        }
+        #endregion
+    }
+}

SDK/Samples/ImportExport/CS/Export/ExportBaseOptionsForm.Designer.cs

@@ -0,0 +1,276 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// Provide a dialog which provides the options of lower priority information for export
+    /// </summary>
+    partial class ExportBaseOptionsForm
+    {
+        /// <summary>
+        /// Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        /// Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Windows Form Designer generated code
+
+        /// <summary>
+        /// Required method for Designer support - do not modify
+        /// the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            this.labelLayersAndProperties = new System.Windows.Forms.Label();
+            this.comboBoxLayersAndProperties = new System.Windows.Forms.ComboBox();
+            this.labelLinetypeScaling = new System.Windows.Forms.Label();
+            this.comboBoxLinetypeScaling = new System.Windows.Forms.ComboBox();
+            this.labelCoorSystem = new System.Windows.Forms.Label();
+            this.comboBoxCoorSystem = new System.Windows.Forms.ComboBox();
+            this.labelDWGUnit = new System.Windows.Forms.Label();
+            this.comboBoxDWGUnit = new System.Windows.Forms.ComboBox();
+            this.labelSolids = new System.Windows.Forms.Label();
+            this.comboBoxSolids = new System.Windows.Forms.ComboBox();
+            this.checkBoxExportingAreas = new System.Windows.Forms.CheckBox();
+            this.buttonOK = new System.Windows.Forms.Button();
+            this.labelLayerSettings = new System.Windows.Forms.Label();
+            this.comboBoxLayerSettings = new System.Windows.Forms.ComboBox();
+            this.buttonCancel = new System.Windows.Forms.Button();
+            this.checkBoxMergeViews = new System.Windows.Forms.CheckBox();
+            this.SuspendLayout();
+            // 
+            // labelLayersAndProperties
+            // 
+            this.labelLayersAndProperties.AutoSize = true;
+            this.labelLayersAndProperties.Location = new System.Drawing.Point(13, 13);
+            this.labelLayersAndProperties.Name = "labelLayersAndProperties";
+            this.labelLayersAndProperties.Size = new System.Drawing.Size(111, 13);
+            this.labelLayersAndProperties.TabIndex = 0;
+            this.labelLayersAndProperties.Text = "Layers and properties:";
+            // 
+            // comboBoxLayersAndProperties
+            // 
+            this.comboBoxLayersAndProperties.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
+            this.comboBoxLayersAndProperties.FormattingEnabled = true;
+            this.comboBoxLayersAndProperties.Location = new System.Drawing.Point(16, 30);
+            this.comboBoxLayersAndProperties.Name = "comboBoxLayersAndProperties";
+            this.comboBoxLayersAndProperties.Size = new System.Drawing.Size(301, 21);
+            this.comboBoxLayersAndProperties.TabIndex = 1;
+            // 
+            // labelLinetypeScaling
+            // 
+            this.labelLinetypeScaling.AutoSize = true;
+            this.labelLinetypeScaling.Location = new System.Drawing.Point(13, 96);
+            this.labelLinetypeScaling.Name = "labelLinetypeScaling";
+            this.labelLinetypeScaling.Size = new System.Drawing.Size(86, 13);
+            this.labelLinetypeScaling.TabIndex = 0;
+            this.labelLinetypeScaling.Text = "Linetype scaling:";
+            // 
+            // comboBoxLinetypeScaling
+            // 
+            this.comboBoxLinetypeScaling.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
+            this.comboBoxLinetypeScaling.FormattingEnabled = true;
+            this.comboBoxLinetypeScaling.Location = new System.Drawing.Point(16, 113);
+            this.comboBoxLinetypeScaling.Name = "comboBoxLinetypeScaling";
+            this.comboBoxLinetypeScaling.Size = new System.Drawing.Size(301, 21);
+            this.comboBoxLinetypeScaling.TabIndex = 3;
+            // 
+            // labelCoorSystem
+            // 
+            this.labelCoorSystem.AutoSize = true;
+            this.labelCoorSystem.Location = new System.Drawing.Point(13, 142);
+            this.labelCoorSystem.Name = "labelCoorSystem";
+            this.labelCoorSystem.Size = new System.Drawing.Size(123, 13);
+            this.labelCoorSystem.TabIndex = 0;
+            this.labelCoorSystem.Text = "Coordinate system basis:";
+            // 
+            // comboBoxCoorSystem
+            // 
+            this.comboBoxCoorSystem.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
+            this.comboBoxCoorSystem.FormattingEnabled = true;
+            this.comboBoxCoorSystem.Location = new System.Drawing.Point(16, 157);
+            this.comboBoxCoorSystem.Name = "comboBoxCoorSystem";
+            this.comboBoxCoorSystem.Size = new System.Drawing.Size(301, 21);
+            this.comboBoxCoorSystem.TabIndex = 4;
+            // 
+            // labelDWGUnit
+            // 
+            this.labelDWGUnit.AutoSize = true;
+            this.labelDWGUnit.Location = new System.Drawing.Point(13, 184);
+            this.labelDWGUnit.Name = "labelDWGUnit";
+            this.labelDWGUnit.Size = new System.Drawing.Size(90, 13);
+            this.labelDWGUnit.TabIndex = 0;
+            this.labelDWGUnit.Text = "One DWG unit is:";
+            // 
+            // comboBoxDWGUnit
+            // 
+            this.comboBoxDWGUnit.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
+            this.comboBoxDWGUnit.FormattingEnabled = true;
+            this.comboBoxDWGUnit.Location = new System.Drawing.Point(16, 198);
+            this.comboBoxDWGUnit.Name = "comboBoxDWGUnit";
+            this.comboBoxDWGUnit.Size = new System.Drawing.Size(301, 21);
+            this.comboBoxDWGUnit.TabIndex = 5;
+            // 
+            // labelSolids
+            // 
+            this.labelSolids.AutoSize = true;
+            this.labelSolids.Location = new System.Drawing.Point(13, 224);
+            this.labelSolids.Name = "labelSolids";
+            this.labelSolids.Size = new System.Drawing.Size(113, 13);
+            this.labelSolids.TabIndex = 0;
+            this.labelSolids.Text = "Solids (3D views only):";
+            // 
+            // comboBoxSolids
+            // 
+            this.comboBoxSolids.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
+            this.comboBoxSolids.FormattingEnabled = true;
+            this.comboBoxSolids.Location = new System.Drawing.Point(16, 241);
+            this.comboBoxSolids.Name = "comboBoxSolids";
+            this.comboBoxSolids.Size = new System.Drawing.Size(301, 21);
+            this.comboBoxSolids.TabIndex = 6;
+            // 
+            // checkBoxExportingAreas
+            // 
+            this.checkBoxExportingAreas.AutoSize = true;
+            this.checkBoxExportingAreas.Location = new System.Drawing.Point(16, 271);
+            this.checkBoxExportingAreas.Name = "checkBoxExportingAreas";
+            this.checkBoxExportingAreas.Size = new System.Drawing.Size(194, 17);
+            this.checkBoxExportingAreas.TabIndex = 7;
+            this.checkBoxExportingAreas.Text = "Export rooms and areas as polylines";
+            this.checkBoxExportingAreas.UseVisualStyleBackColor = true;
+            // 
+            // buttonOK
+            // 
+            this.buttonOK.Location = new System.Drawing.Point(161, 335);
+            this.buttonOK.Name = "buttonOK";
+            this.buttonOK.Size = new System.Drawing.Size(75, 23);
+            this.buttonOK.TabIndex = 0;
+            this.buttonOK.Text = "&OK";
+            this.buttonOK.UseVisualStyleBackColor = true;
+            this.buttonOK.Click += new System.EventHandler(this.buttonOK_Click);
+            // 
+            // labelLayerSettings
+            // 
+            this.labelLayerSettings.AutoSize = true;
+            this.labelLayerSettings.Location = new System.Drawing.Point(13, 55);
+            this.labelLayerSettings.Name = "labelLayerSettings";
+            this.labelLayerSettings.Size = new System.Drawing.Size(75, 13);
+            this.labelLayerSettings.TabIndex = 0;
+            this.labelLayerSettings.Text = "Layer settings:";
+            // 
+            // comboBoxLayerSettings
+            // 
+            this.comboBoxLayerSettings.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
+            this.comboBoxLayerSettings.FormattingEnabled = true;
+            this.comboBoxLayerSettings.Location = new System.Drawing.Point(16, 72);
+            this.comboBoxLayerSettings.Name = "comboBoxLayerSettings";
+            this.comboBoxLayerSettings.Size = new System.Drawing.Size(301, 21);
+            this.comboBoxLayerSettings.TabIndex = 2;
+            // 
+            // buttonCancel
+            // 
+            this.buttonCancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
+            this.buttonCancel.Location = new System.Drawing.Point(242, 335);
+            this.buttonCancel.Name = "buttonCancel";
+            this.buttonCancel.Size = new System.Drawing.Size(75, 23);
+            this.buttonCancel.TabIndex = 8;
+            this.buttonCancel.Text = "&Cancel";
+            this.buttonCancel.UseVisualStyleBackColor = true;
+            // 
+            // checkBoxMergeViews
+            // 
+            this.checkBoxMergeViews.AutoSize = true;
+            this.checkBoxMergeViews.Location = new System.Drawing.Point(16, 294);
+            this.checkBoxMergeViews.Name = "checkBoxMergeViews";
+            this.checkBoxMergeViews.Size = new System.Drawing.Size(220, 17);
+            this.checkBoxMergeViews.TabIndex = 9;
+            this.checkBoxMergeViews.Text = "Create separate files for each view/sheet";
+            this.checkBoxMergeViews.UseVisualStyleBackColor = true;
+            // 
+            // ExportBaseOptionsForm
+            // 
+            this.AcceptButton = this.buttonOK;
+            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.CancelButton = this.buttonCancel;
+            this.ClientSize = new System.Drawing.Size(336, 368);
+            this.Controls.Add(this.checkBoxMergeViews);
+            this.Controls.Add(this.buttonCancel);
+            this.Controls.Add(this.buttonOK);
+            this.Controls.Add(this.checkBoxExportingAreas);
+            this.Controls.Add(this.comboBoxSolids);
+            this.Controls.Add(this.labelSolids);
+            this.Controls.Add(this.comboBoxDWGUnit);
+            this.Controls.Add(this.labelDWGUnit);
+            this.Controls.Add(this.comboBoxCoorSystem);
+            this.Controls.Add(this.labelCoorSystem);
+            this.Controls.Add(this.comboBoxLinetypeScaling);
+            this.Controls.Add(this.labelLinetypeScaling);
+            this.Controls.Add(this.comboBoxLayerSettings);
+            this.Controls.Add(this.labelLayerSettings);
+            this.Controls.Add(this.comboBoxLayersAndProperties);
+            this.Controls.Add(this.labelLayersAndProperties);
+            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
+            this.MaximizeBox = false;
+            this.MinimizeBox = false;
+            this.Name = "ExportBaseOptionsForm";
+            this.ShowIcon = false;
+            this.ShowInTaskbar = false;
+            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+        }
+
+        #endregion
+
+        private System.Windows.Forms.Label labelLayersAndProperties;
+        private System.Windows.Forms.ComboBox comboBoxLayersAndProperties;
+        private System.Windows.Forms.Label labelLinetypeScaling;
+        private System.Windows.Forms.ComboBox comboBoxLinetypeScaling;
+        private System.Windows.Forms.Label labelCoorSystem;
+        private System.Windows.Forms.ComboBox comboBoxCoorSystem;
+        private System.Windows.Forms.Label labelDWGUnit;
+        private System.Windows.Forms.ComboBox comboBoxDWGUnit;
+        private System.Windows.Forms.Label labelSolids;
+        private System.Windows.Forms.ComboBox comboBoxSolids;
+        private System.Windows.Forms.CheckBox checkBoxExportingAreas;
+        private System.Windows.Forms.Button buttonOK;
+        private System.Windows.Forms.Label labelLayerSettings;
+        private System.Windows.Forms.ComboBox comboBoxLayerSettings;
+        private System.Windows.Forms.Button buttonCancel;
+        private System.Windows.Forms.CheckBox checkBoxMergeViews;
+    }
+}

SDK/Samples/ImportExport/CS/Export/ExportBaseOptionsForm.cs

@@ -0,0 +1,116 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Text;
+using System.Windows.Forms;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// Provide a dialog which provides the options of lower priority information for exporting dwg format
+    /// </summary>
+    public partial class ExportBaseOptionsForm : System.Windows.Forms.Form
+    {
+        /// <summary>
+        /// data class
+        /// </summary>
+        private ExportBaseOptionsData m_exportOptionsData;
+        
+
+        /// <summary>
+        /// Whether export the current view only
+        /// </summary>
+        private bool m_contain3DView;
+
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        /// <param name="exportOptionsData">Data class object</param>
+        /// <param name="contain3DView">If views to export contain 3D views</param>
+        /// <param name="exportFormat">export format</param>
+        public ExportBaseOptionsForm(ExportBaseOptionsData exportOptionsData, bool contain3DView, String exportFormat)
+        {
+            InitializeComponent();
+            m_exportOptionsData = exportOptionsData;
+            m_contain3DView = contain3DView;
+            this.Text = "Export " + exportFormat + " Options";
+            InitializeControl();
+        }
+
+        /// <summary>
+        /// Initialize values and status of controls
+        /// </summary>
+        private void InitializeControl()
+        {
+            comboBoxLayersAndProperties.DataSource = m_exportOptionsData.LayersAndProperties;
+            comboBoxLayersAndProperties.SelectedIndex = 0;
+            comboBoxLayerSettings.DataSource = m_exportOptionsData.LayerMapping;
+            comboBoxLayerSettings.SelectedIndex = 0;
+            comboBoxLinetypeScaling.DataSource = m_exportOptionsData.LineScaling;
+            comboBoxLinetypeScaling.SelectedIndex = 2;
+            comboBoxCoorSystem.DataSource = m_exportOptionsData.CoorSystem;
+            comboBoxCoorSystem.SelectedIndex = 0;
+            comboBoxDWGUnit.DataSource = m_exportOptionsData.Units;
+            comboBoxDWGUnit.SelectedIndex = 1;
+            comboBoxSolids.DataSource = m_exportOptionsData.Solids;
+            comboBoxSolids.SelectedIndex = 0;
+            checkBoxMergeViews.Checked = m_exportOptionsData.ExportMergeFiles;
+            checkBoxMergeViews.Text = "Merge all views in one file (via XRefs).";
+            if (m_contain3DView)
+            {
+                comboBoxSolids.Enabled = true;
+            }
+            else
+            {
+                comboBoxSolids.Enabled = false;
+            }
+        }
+
+        /// <summary>
+        /// Transfer information back to ExportOptionData class
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        private void buttonOK_Click(object sender, EventArgs e)
+        {
+            m_exportOptionsData.ExportLayersAndProperties = 
+                m_exportOptionsData.EnumLayersAndProperties[comboBoxLayersAndProperties.SelectedIndex];
+            m_exportOptionsData.ExportLayerMapping = 
+                m_exportOptionsData.EnumLayerMapping[comboBoxLayerSettings.SelectedIndex];
+            m_exportOptionsData.ExportLineScaling = 
+                m_exportOptionsData.EnumLineScaling[comboBoxLinetypeScaling.SelectedIndex];
+            m_exportOptionsData.ExportCoorSystem = 
+                m_exportOptionsData.EnumCoorSystem[comboBoxCoorSystem.SelectedIndex];
+            m_exportOptionsData.ExportUnit = m_exportOptionsData.EnumUnits[comboBoxDWGUnit.SelectedIndex];
+            m_exportOptionsData.ExportSolid = m_exportOptionsData.EnumSolids[comboBoxSolids.SelectedIndex];
+            m_exportOptionsData.ExportAreas = checkBoxExportingAreas.Checked;
+            m_exportOptionsData.ExportMergeFiles = checkBoxMergeViews.Checked;
+
+            this.Close();
+        }
+    }
+}

SDK/Samples/ImportExport/CS/Export/ExportBaseOptionsForm.resx

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

SDK/Samples/ImportExport/CS/Export/ExportDGNData.cs

@@ -0,0 +1,278 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Text;
+using System.Reflection;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+
+using Autodesk.Revit;
+using Autodesk.Revit.DB;
+using Autodesk.Revit.UI;
+using System.Diagnostics;
+using System.IO;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// Data class which stores the main information for exporting dgn format
+    /// </summary>
+    public class ExportDGNData : ExportDataWithViews
+    {
+        #region Class Member Variables
+        /// <summary>
+        /// String list of Layer Settings used in UI
+        /// </summary>
+        List<String> m_layerMapping;
+        /// <summary>
+        /// String list of layer settings values defined in Revit 
+        /// </summary>
+        List<String> m_enumLayerMapping;
+        /// <summary>
+        /// String list of exported format version defined in Revit 
+        /// </summary>
+        List<String> m_exportFileVersions;
+      
+        /// <summary>
+        /// Layer setting option to export
+        /// </summary>
+        private String m_exportLayerMapping;
+        /// <summary>
+        /// Exported format version
+        /// </summary>
+        private String m_exportFileVersion;
+        /// <summary>
+        /// Whether to hide scope box
+        /// </summary>
+        private Boolean m_hideScopeBox;
+        /// <summary>
+        /// Whether to hide unreference view tags
+        /// </summary>
+        private Boolean m_hideUnreferenceViewTags;
+        /// <summary>
+        /// Whether to hide reference plane
+        /// </summary>
+        private Boolean m_hideReferencePlane;
+        #endregion
+
+        #region Class Properties
+        /// <summary>
+        /// Layer setting option to export
+        /// </summary>
+        public String ExportLayerMapping
+        {
+            get
+            {
+                return m_exportLayerMapping;
+            }
+            set
+            {
+                m_exportLayerMapping = value;
+            }
+        }
+
+        /// <summary>
+        /// Whether to hide scope box
+        /// </summary>
+        public Boolean HideScopeBox
+        {
+            get 
+            { 
+                return m_hideScopeBox; 
+            }
+            set 
+            {
+                m_hideScopeBox = value; 
+            }
+        }
+
+        /// <summary>
+        /// Whether to hide unreference view tags
+        /// </summary>
+        public Boolean HideUnreferenceViewTags
+        {
+            get 
+            { 
+                return m_hideUnreferenceViewTags;
+            }
+            set 
+            { 
+                m_hideUnreferenceViewTags = value;
+            }
+        }
+
+        /// <summary>
+        /// Whether to hide reference plane
+        /// </summary>
+        public Boolean HideReferencePlane
+        {
+            get 
+            { 
+                return m_hideReferencePlane;
+            }
+            set 
+            { 
+                m_hideReferencePlane = value; 
+            }
+        }
+
+        /// <summary>
+        /// Exported format version
+        /// </summary>
+        public String ExportFileVersion
+        {
+            get 
+            { 
+                return m_exportFileVersion; 
+            }
+            set 
+            { 
+                m_exportFileVersion = value; 
+            }
+        }
+
+        /// <summary>
+        /// String collection of Layer Settings used in UI
+        /// </summary>
+        public ReadOnlyCollection<String> LayerMapping
+        {
+            get
+            {
+                return new ReadOnlyCollection<String>(m_layerMapping);
+            }
+        }
+
+        /// <summary>
+        /// String list of exported format version defined in Revit 
+        /// </summary>
+        public List<String> ExportFileVersions
+        {
+            get 
+            { 
+                return m_exportFileVersions; 
+            }
+        }
+
+        /// <summary>
+        /// String collection of layer settings values defined in Revit  
+        /// </summary>
+        public ReadOnlyCollection<String> EnumLayerMapping
+        {
+            get
+            {
+                return new ReadOnlyCollection<String>(m_enumLayerMapping);
+            }
+        }
+
+        #endregion
+
+        #region Class Member Methods
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        /// <param name="commandData">Revit command data</param>
+        /// <param name="exportFormat">Format to export</param>
+        public ExportDGNData(ExternalCommandData commandData, ExportFormat exportFormat)
+            : base(commandData, exportFormat)
+        {
+            Initialize();
+        }
+
+        /// <summary>
+        /// Initialize the variables
+        /// </summary>
+        private void Initialize()
+        {
+            //Layer Settings:
+            m_layerMapping = new List<String>();
+            m_enumLayerMapping = new List<String>();
+            m_layerMapping.Add("AIA - American Institute of Architects standard");
+            m_enumLayerMapping.Add("AIA");
+            m_layerMapping.Add("ISO13567 - ISO standard 13567");
+            m_enumLayerMapping.Add("ISO13567");
+            m_layerMapping.Add("CP83 - Singapore standard 83");
+            m_enumLayerMapping.Add("CP83");
+            m_layerMapping.Add("BS1192 - British standard 1192");
+            m_enumLayerMapping.Add("BS1192");
+
+            //Export format:
+            m_exportFileVersions = new List<string>();
+            m_exportFileVersions.Add("MicroStation V8 Format");
+            m_exportFileVersions.Add("MicroStation V7 Format");
+
+            m_filter = "Microstation DGN Files |*.dgn";
+            m_title = "Export DGN";
+        }
+
+        /// <summary>
+        /// Collect the parameters and export
+        /// </summary>
+        /// <returns></returns>
+        public override bool Export()
+        {
+            base.Export();
+
+            bool exported = false;
+            ICollection<ElementId> views = new List<ElementId>();
+            if (m_currentViewOnly)
+            {
+                views.Add(m_activeDoc.ActiveView.Id);
+            }
+            else
+            {
+                foreach (View view in m_selectViewsData.SelectedViews)
+                {
+                   views.Add(view.Id);
+                }
+            }
+
+            //parameter : DWGExportOptions dwgExportOptions
+            DGNExportOptions dgnExportOptions = new DGNExportOptions();
+            // default values
+            dgnExportOptions.FileVersion = DGNFileFormat.DGNVersion8;
+            m_exportLayerMapping = m_enumLayerMapping[0];
+
+            // set values from selected options
+            dgnExportOptions.LayerMapping = m_exportLayerMapping;
+            if (m_exportFileVersion == "MicroStation V7 Format")
+            {
+                dgnExportOptions.FileVersion = DGNFileFormat.DGNVersion7;
+            }
+            else
+            {
+                dgnExportOptions.FileVersion = DGNFileFormat.DGNVersion8;
+            }
+            dgnExportOptions.HideScopeBox = m_hideScopeBox;
+            dgnExportOptions.HideUnreferenceViewTags = m_hideUnreferenceViewTags;
+            dgnExportOptions.HideReferencePlane = m_hideReferencePlane;
+            ProcessModule mainModule = Process.GetCurrentProcess().MainModule;
+            String RevitFolder = Path.GetDirectoryName( mainModule.FileName );
+            dgnExportOptions.SeedName = Path.Combine(RevitFolder, @"ACADInterop\V8-Imperial-Seed3D.dgn");
+            
+            //Export
+            exported = m_activeDoc.Export(m_exportFolder, m_exportFileName, views, dgnExportOptions);
+            return exported;
+        }
+        #endregion
+    }
+}

SDK/Samples/ImportExport/CS/Export/ExportDGNOptionsForm.Designer.cs

@@ -0,0 +1,276 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    partial class ExportDGNOptionsForm
+    {
+        /// <summary>
+        /// Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        /// Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Windows Form Designer generated code
+
+        /// <summary>
+        /// Required method for Designer support - do not modify
+        /// the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            this.labelLayerMapping = new System.Windows.Forms.Label();
+            this.comboBoxLayerSettings = new System.Windows.Forms.ComboBox();
+            this.buttonCancel = new System.Windows.Forms.Button();
+            this.buttonOK = new System.Windows.Forms.Button();
+            this.comboBoxExportFileFormat = new System.Windows.Forms.ComboBox();
+            this.labelExportFormat = new System.Windows.Forms.Label();
+            this.checkBoxHideScopeBoxes = new System.Windows.Forms.CheckBox();
+            this.checkBoxHideReferencePlanes = new System.Windows.Forms.CheckBox();
+            this.checkBoxHideUnrefereceViewTag = new System.Windows.Forms.CheckBox();
+            this.groupBox1 = new System.Windows.Forms.GroupBox();
+            this.label1 = new System.Windows.Forms.Label();
+            this.textBox2DSeedFile = new System.Windows.Forms.TextBox();
+            this.button2DSeedFile = new System.Windows.Forms.Button();
+            this.label2 = new System.Windows.Forms.Label();
+            this.textBox3DSeedFile = new System.Windows.Forms.TextBox();
+            this.button3DSeedFile = new System.Windows.Forms.Button();
+            this.groupBox1.SuspendLayout();
+            this.SuspendLayout();
+            // 
+            // labelLayerMapping
+            // 
+            this.labelLayerMapping.AutoSize = true;
+            this.labelLayerMapping.Location = new System.Drawing.Point(11, 15);
+            this.labelLayerMapping.Name = "labelLayerMapping";
+            this.labelLayerMapping.Size = new System.Drawing.Size(77, 13);
+            this.labelLayerMapping.TabIndex = 14;
+            this.labelLayerMapping.Text = "Layer Settings:";
+            // 
+            // comboBoxLayerSettings
+            // 
+            this.comboBoxLayerSettings.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
+            this.comboBoxLayerSettings.FormattingEnabled = true;
+            this.comboBoxLayerSettings.Location = new System.Drawing.Point(14, 31);
+            this.comboBoxLayerSettings.Name = "comboBoxLayerSettings";
+            this.comboBoxLayerSettings.Size = new System.Drawing.Size(419, 21);
+            this.comboBoxLayerSettings.TabIndex = 15;
+            // 
+            // buttonCancel
+            // 
+            this.buttonCancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
+            this.buttonCancel.Location = new System.Drawing.Point(358, 332);
+            this.buttonCancel.Name = "buttonCancel";
+            this.buttonCancel.Size = new System.Drawing.Size(75, 23);
+            this.buttonCancel.TabIndex = 17;
+            this.buttonCancel.Text = "&Cancel";
+            this.buttonCancel.UseVisualStyleBackColor = true;
+            // 
+            // buttonOK
+            // 
+            this.buttonOK.Location = new System.Drawing.Point(275, 332);
+            this.buttonOK.Name = "buttonOK";
+            this.buttonOK.Size = new System.Drawing.Size(75, 23);
+            this.buttonOK.TabIndex = 16;
+            this.buttonOK.Text = "&OK";
+            this.buttonOK.UseVisualStyleBackColor = true;
+            this.buttonOK.Click += new System.EventHandler(this.buttonOK_Click);
+            // 
+            // comboBoxExportFileFormat
+            // 
+            this.comboBoxExportFileFormat.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
+            this.comboBoxExportFileFormat.FormattingEnabled = true;
+            this.comboBoxExportFileFormat.Location = new System.Drawing.Point(17, 82);
+            this.comboBoxExportFileFormat.Name = "comboBoxExportFileFormat";
+            this.comboBoxExportFileFormat.Size = new System.Drawing.Size(416, 21);
+            this.comboBoxExportFileFormat.TabIndex = 18;
+            // 
+            // labelExportFormat
+            // 
+            this.labelExportFormat.AutoSize = true;
+            this.labelExportFormat.Location = new System.Drawing.Point(14, 64);
+            this.labelExportFormat.Name = "labelExportFormat";
+            this.labelExportFormat.Size = new System.Drawing.Size(100, 13);
+            this.labelExportFormat.TabIndex = 19;
+            this.labelExportFormat.Text = "Export to file format:";
+            // 
+            // checkBoxHideScopeBoxes
+            // 
+            this.checkBoxHideScopeBoxes.AutoSize = true;
+            this.checkBoxHideScopeBoxes.Location = new System.Drawing.Point(17, 244);
+            this.checkBoxHideScopeBoxes.Name = "checkBoxHideScopeBoxes";
+            this.checkBoxHideScopeBoxes.Size = new System.Drawing.Size(111, 17);
+            this.checkBoxHideScopeBoxes.TabIndex = 20;
+            this.checkBoxHideScopeBoxes.Text = "Hide scope boxes";
+            this.checkBoxHideScopeBoxes.UseVisualStyleBackColor = true;
+            // 
+            // checkBoxHideReferencePlanes
+            // 
+            this.checkBoxHideReferencePlanes.AutoSize = true;
+            this.checkBoxHideReferencePlanes.Location = new System.Drawing.Point(17, 267);
+            this.checkBoxHideReferencePlanes.Name = "checkBoxHideReferencePlanes";
+            this.checkBoxHideReferencePlanes.Size = new System.Drawing.Size(130, 17);
+            this.checkBoxHideReferencePlanes.TabIndex = 20;
+            this.checkBoxHideReferencePlanes.Text = "Hide reference planes";
+            this.checkBoxHideReferencePlanes.UseVisualStyleBackColor = true;
+            // 
+            // checkBoxHideUnrefereceViewTag
+            // 
+            this.checkBoxHideUnrefereceViewTag.AutoSize = true;
+            this.checkBoxHideUnrefereceViewTag.Location = new System.Drawing.Point(17, 290);
+            this.checkBoxHideUnrefereceViewTag.Name = "checkBoxHideUnrefereceViewTag";
+            this.checkBoxHideUnrefereceViewTag.Size = new System.Drawing.Size(162, 17);
+            this.checkBoxHideUnrefereceViewTag.TabIndex = 20;
+            this.checkBoxHideUnrefereceViewTag.Text = "Hide unreferenced view tags";
+            this.checkBoxHideUnrefereceViewTag.UseVisualStyleBackColor = true;
+            // 
+            // groupBox1
+            // 
+            this.groupBox1.Controls.Add(this.button3DSeedFile);
+            this.groupBox1.Controls.Add(this.button2DSeedFile);
+            this.groupBox1.Controls.Add(this.textBox3DSeedFile);
+            this.groupBox1.Controls.Add(this.label2);
+            this.groupBox1.Controls.Add(this.textBox2DSeedFile);
+            this.groupBox1.Controls.Add(this.label1);
+            this.groupBox1.Location = new System.Drawing.Point(14, 119);
+            this.groupBox1.Name = "groupBox1";
+            this.groupBox1.Size = new System.Drawing.Size(419, 116);
+            this.groupBox1.TabIndex = 21;
+            this.groupBox1.TabStop = false;
+            this.groupBox1.Text = "Specify seed file for";
+            // 
+            // label1
+            // 
+            this.label1.AutoSize = true;
+            this.label1.Location = new System.Drawing.Point(7, 20);
+            this.label1.Name = "label1";
+            this.label1.Size = new System.Drawing.Size(54, 13);
+            this.label1.TabIndex = 0;
+            this.label1.Text = "2D views:";
+            // 
+            // textBox2DSeedFile
+            // 
+            this.textBox2DSeedFile.Location = new System.Drawing.Point(10, 37);
+            this.textBox2DSeedFile.Name = "textBox2DSeedFile";
+            this.textBox2DSeedFile.Size = new System.Drawing.Size(371, 20);
+            this.textBox2DSeedFile.TabIndex = 1;
+            // 
+            // button2DSeedFile
+            // 
+            this.button2DSeedFile.Location = new System.Drawing.Point(387, 36);
+            this.button2DSeedFile.Name = "button2DSeedFile";
+            this.button2DSeedFile.Size = new System.Drawing.Size(26, 20);
+            this.button2DSeedFile.TabIndex = 2;
+            this.button2DSeedFile.Text = "...";
+            this.button2DSeedFile.UseVisualStyleBackColor = true;
+            this.button2DSeedFile.Click += new System.EventHandler(this.button2DSeedFile_Click);
+            // 
+            // label2
+            // 
+            this.label2.AutoSize = true;
+            this.label2.Location = new System.Drawing.Point(7, 67);
+            this.label2.Name = "label2";
+            this.label2.Size = new System.Drawing.Size(54, 13);
+            this.label2.TabIndex = 0;
+            this.label2.Text = "3D views:";
+            // 
+            // textBox3DSeedFile
+            // 
+            this.textBox3DSeedFile.Location = new System.Drawing.Point(10, 84);
+            this.textBox3DSeedFile.Name = "textBox3DSeedFile";
+            this.textBox3DSeedFile.Size = new System.Drawing.Size(371, 20);
+            this.textBox3DSeedFile.TabIndex = 1;
+            // 
+            // button3DSeedFile
+            // 
+            this.button3DSeedFile.Location = new System.Drawing.Point(387, 83);
+            this.button3DSeedFile.Name = "button3DSeedFile";
+            this.button3DSeedFile.Size = new System.Drawing.Size(26, 20);
+            this.button3DSeedFile.TabIndex = 2;
+            this.button3DSeedFile.Text = "...";
+            this.button3DSeedFile.UseVisualStyleBackColor = true;
+            this.button3DSeedFile.Click += new System.EventHandler(this.button3DSeedFile_Click);
+            // 
+            // ExportDGNOptionsForm
+            // 
+            this.AcceptButton = this.buttonOK;
+            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.CancelButton = this.buttonCancel;
+            this.ClientSize = new System.Drawing.Size(448, 372);
+            this.Controls.Add(this.groupBox1);
+            this.Controls.Add(this.checkBoxHideUnrefereceViewTag);
+            this.Controls.Add(this.checkBoxHideReferencePlanes);
+            this.Controls.Add(this.checkBoxHideScopeBoxes);
+            this.Controls.Add(this.labelExportFormat);
+            this.Controls.Add(this.comboBoxExportFileFormat);
+            this.Controls.Add(this.buttonCancel);
+            this.Controls.Add(this.buttonOK);
+            this.Controls.Add(this.comboBoxLayerSettings);
+            this.Controls.Add(this.labelLayerMapping);
+            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
+            this.MaximizeBox = false;
+            this.MinimizeBox = false;
+            this.Name = "ExportDGNOptionsForm";
+            this.ShowIcon = false;
+            this.ShowInTaskbar = false;
+            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
+            this.Text = "Export DGN Options";
+            this.groupBox1.ResumeLayout(false);
+            this.groupBox1.PerformLayout();
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+        }
+
+        #endregion
+
+        private System.Windows.Forms.Label labelLayerMapping;
+        private System.Windows.Forms.ComboBox comboBoxLayerSettings;
+        private System.Windows.Forms.Button buttonCancel;
+        private System.Windows.Forms.Button buttonOK;
+        private System.Windows.Forms.ComboBox comboBoxExportFileFormat;
+        private System.Windows.Forms.Label labelExportFormat;
+        private System.Windows.Forms.CheckBox checkBoxHideScopeBoxes;
+        private System.Windows.Forms.CheckBox checkBoxHideReferencePlanes;
+        private System.Windows.Forms.CheckBox checkBoxHideUnrefereceViewTag;
+        private System.Windows.Forms.GroupBox groupBox1;
+        private System.Windows.Forms.Button button3DSeedFile;
+        private System.Windows.Forms.Button button2DSeedFile;
+        private System.Windows.Forms.TextBox textBox3DSeedFile;
+        private System.Windows.Forms.Label label2;
+        private System.Windows.Forms.TextBox textBox2DSeedFile;
+        private System.Windows.Forms.Label label1;
+    }
+}

SDK/Samples/ImportExport/CS/Export/ExportDGNOptionsForm.cs

@@ -0,0 +1,175 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Text;
+using System.Windows.Forms;
+using System.IO;
+using System.Reflection;
+using System.Diagnostics;
+
+using Autodesk.Revit.UI;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// Provide a dialog which provides the options for exporting dgn format
+    /// </summary>
+    public partial class ExportDGNOptionsForm : System.Windows.Forms.Form
+    {
+        /// <summary>
+        /// data class
+        /// </summary>
+        private ExportDGNData m_data;
+
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        /// <param name="data">Data class object</param>
+        public ExportDGNOptionsForm(ExportDGNData data)
+        {
+            m_data = data;
+            InitializeComponent();
+            InitializeControl();
+        }
+
+        /// <summary>
+        /// Initialize values and status of controls
+        /// </summary>
+        private void InitializeControl()
+        {
+            comboBoxLayerSettings.DataSource = m_data.LayerMapping;
+            comboBoxLayerSettings.SelectedIndex = 0;
+            comboBoxExportFileFormat.DataSource = m_data.ExportFileVersions;
+            comboBoxExportFileFormat.SelectedIndex = 0;
+            checkBoxHideReferencePlanes.Checked = false;
+            checkBoxHideScopeBoxes.Checked = false;
+            checkBoxHideUnrefereceViewTag.Checked = false;
+        }
+
+        /// <summary>
+        /// OK button click event
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        private void buttonOK_Click(object sender, EventArgs e)
+        {
+            if (String.IsNullOrEmpty(textBox2DSeedFile.Text))
+            {
+                TaskDialog.Show("Specify 2D seed file", "Please specify the 2D seed file.", TaskDialogCommonButtons.Ok);
+                button2DSeedFile.Focus();
+                return;
+            }
+
+            if (!File.Exists(textBox2DSeedFile.Text))
+            {
+                TaskDialog.Show("Specify 2D seed file", "The 2D seed file does not exist.", TaskDialogCommonButtons.Ok);
+                button2DSeedFile.Focus();
+                return;
+            }
+
+            if (String.IsNullOrEmpty(textBox3DSeedFile.Text))
+            {
+                TaskDialog.Show("Specify 3D seed file", "Please specify the 3D seed file.", TaskDialogCommonButtons.Ok);
+                button3DSeedFile.Focus();
+                return;
+            }
+
+            if (!File.Exists(textBox3DSeedFile.Text))
+            {
+                TaskDialog.Show("Specify 3D seed file", "The 3D seed file does not exist.", TaskDialogCommonButtons.Ok);
+                button3DSeedFile.Focus();
+                return;
+            }
+
+            m_data.ExportLayerMapping =
+                m_data.EnumLayerMapping[comboBoxLayerSettings.SelectedIndex];
+            m_data.ExportFileVersion = m_data.ExportFileVersions[comboBoxExportFileFormat.SelectedIndex];
+            m_data.HideScopeBox = checkBoxHideScopeBoxes.Checked;
+            m_data.HideReferencePlane = checkBoxHideReferencePlanes.Checked;
+            m_data.HideUnreferenceViewTags = checkBoxHideUnrefereceViewTag.Checked;
+            this.Close();
+        }
+
+        /// <summary>
+        /// button2DSeedFile click event
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        private void button2DSeedFile_Click(object sender, EventArgs e)
+        {
+            String fileName = String.Empty;
+            DialogResult result = ShowOpenDialog(ref fileName);
+            if (result != DialogResult.Cancel)
+            {
+                textBox2DSeedFile.Text = fileName;
+            }
+        }
+
+        /// <summary>
+        /// Show open file dialog
+        /// </summary>
+        /// <param name="returnFileName"></param>
+        /// <returns></returns>
+        public static DialogResult ShowOpenDialog(ref String returnFileName)
+        {
+            ProcessModule mainModule = Process.GetCurrentProcess().MainModule;
+            String folderRevit = Path.GetDirectoryName(mainModule.FileName);
+            String folderACADInterop = Path.Combine(folderRevit, "ACADInterop");
+            String initialDirectory = folderRevit;
+            if (Directory.Exists(folderACADInterop))
+            {
+                initialDirectory = folderACADInterop;
+            }
+
+            using (OpenFileDialog openFileDialog = new OpenFileDialog())
+            {
+                openFileDialog.Title = "Specify seed file";
+                openFileDialog.InitialDirectory = initialDirectory;
+                openFileDialog.Filter = "DGN Files |*.dgn";
+                openFileDialog.RestoreDirectory = true;
+
+                DialogResult result = openFileDialog.ShowDialog();
+                if (result != DialogResult.Cancel)
+                {
+                    returnFileName = openFileDialog.FileName;
+                }
+
+                return result;
+            }
+        }
+
+        private void button3DSeedFile_Click(object sender, EventArgs e)
+        {
+            String fileName = String.Empty;
+            DialogResult result = ShowOpenDialog(ref fileName);
+            if (result != DialogResult.Cancel)
+            {
+                textBox3DSeedFile.Text = fileName;
+            }
+        }
+    }
+}

SDK/Samples/ImportExport/CS/Export/ExportDGNOptionsForm.resx

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

SDK/Samples/ImportExport/CS/Export/ExportDWFData.cs

@@ -0,0 +1,248 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.IO;
+using System.Reflection;
+
+using Autodesk.Revit;
+using Autodesk.Revit.DB;
+using Autodesk.Revit.UI;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// Data class which stores the information for exporting 2D DWF format
+    /// </summary>
+    public class ExportDWFData : ExportDataWithViews
+    {
+        #region Class Member Variables
+        /// <summary>
+        /// Whether export object data
+        /// </summary>
+        private bool m_exportObjectData;
+        /// <summary>
+        /// Whether export areas
+        /// </summary>
+        private bool m_exportAreas;
+        /// <summary>
+        /// Whether to create separate files for each view/sheet
+        /// </summary>
+        private bool m_exportMergeFiles;
+        /// <summary>
+        /// List of image quality for DWF export
+        /// </summary>
+        List<Autodesk.Revit.DB.DWFImageQuality> m_ImageQualities;
+        /// <summary>
+        /// Selected image quality for DWF export
+        /// </summary>
+        Autodesk.Revit.DB.DWFImageQuality m_dwfImageQuality;
+        /// <summary>
+        /// Selected image format for DWF export
+        /// </summary>
+        Autodesk.Revit.DB.DWFImageFormat m_dwfImageFormat;
+        #endregion
+
+        #region Class Properties
+        /// <summary>
+        /// Whether export object data
+        /// </summary>
+        public bool ExportObjectData
+        {
+            get 
+            { 
+                return m_exportObjectData; 
+            }
+            set 
+            { 
+                m_exportObjectData = value; 
+            }
+        }
+
+        /// <summary>
+        /// Whether to create separate files for each view/sheet
+        /// </summary>
+        public bool ExportMergeFiles
+        {
+            get
+            {
+                return m_exportMergeFiles;
+            }
+            set
+            {
+                m_exportMergeFiles = value;
+            }
+        }  
+
+        /// <summary>
+        /// Whether export areas
+        /// </summary>
+        public bool ExportAreas
+        {
+            get
+            {
+                return m_exportAreas;
+            }
+            set
+            {
+                m_exportAreas = value;
+            }
+        }
+
+        /// <summary>
+        /// Selected image format for DWF export
+        /// </summary>
+        public Autodesk.Revit.DB.DWFImageFormat DwfImageFormat
+        {
+            get 
+            { 
+                return m_dwfImageFormat; 
+            }
+            set 
+            { 
+                m_dwfImageFormat = value; 
+            }
+        }
+
+        /// <summary>
+        /// Selected image quality for DWF export
+        /// </summary>
+        public Autodesk.Revit.DB.DWFImageQuality DwfImageQuality
+        {
+            get 
+            { 
+                return m_dwfImageQuality; 
+            }
+            set 
+            { 
+                m_dwfImageQuality = value; 
+            }
+        }
+
+        /// <summary>
+        /// List of image quality for DWF export
+        /// </summary>
+        public List<Autodesk.Revit.DB.DWFImageQuality> ImageQualities
+        {
+            get 
+            { 
+                return m_ImageQualities; 
+            }
+            set 
+            { 
+                m_ImageQualities = value; 
+            }
+        }
+        #endregion
+
+        #region Class Member Methods
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        /// <param name="commandData">Revit command data</param>
+        /// <param name="exportFormat">Format to export</param>
+        public ExportDWFData(ExternalCommandData commandData, ExportFormat exportFormat)
+            : base(commandData, exportFormat)
+        {
+            Initialize();
+        }
+
+        /// <summary>
+        /// Initialize the variables
+        /// </summary>
+        private void Initialize()
+        {
+            m_exportObjectData = true;
+            m_exportAreas = false;
+            m_exportMergeFiles = true;
+            m_ImageQualities = new List<Autodesk.Revit.DB.DWFImageQuality>();
+            m_ImageQualities.Add(Autodesk.Revit.DB.DWFImageQuality.Low);
+            m_ImageQualities.Add(Autodesk.Revit.DB.DWFImageQuality.Medium);
+            m_ImageQualities.Add(Autodesk.Revit.DB.DWFImageQuality.High);
+
+            // Export DWF
+            if (m_exportFormat == ExportFormat.DWF)
+            {
+                m_filter = "DWF Files |*.dwf";
+                m_title = "Export DWF";
+            }
+            // Export DWFx
+            else
+            {
+                m_filter = "DWFx Files |*.dwfx";
+                m_title = "Export DWFx";
+            }
+        }
+
+        /// <summary>
+        /// Collect the parameters and export
+        /// </summary>
+        /// <returns></returns>
+        public override bool Export()
+        {
+            Transaction transaction = new Transaction(m_activeDoc, "Export_To_DWF");
+            transaction.Start();
+            bool exported = false;
+            base.Export();
+
+            //parameter : ViewSet views
+            ViewSet views = new ViewSet();
+            if (m_currentViewOnly)
+            {
+                views.Insert(m_activeDoc.ActiveView);
+            }
+            else
+            {
+                views = m_selectViewsData.SelectedViews;
+            }
+
+            // Export DWFx
+            if (m_exportFormat == ExportFormat.DWFx)
+            {
+                DWFXExportOptions options = new DWFXExportOptions();
+                options.ExportObjectData = m_exportObjectData;
+                options.ExportingAreas = m_exportAreas;
+                options.MergedViews = m_exportMergeFiles;
+                options.ImageFormat = m_dwfImageFormat;
+                options.ImageQuality = m_dwfImageQuality;
+                exported = m_activeDoc.Export(m_exportFolder, m_exportFileName, views, options);
+            }
+            // Export DWF
+            else
+            {
+                DWFExportOptions options = new DWFExportOptions();
+                options.ExportObjectData = m_exportObjectData;
+                options.ExportingAreas = m_exportAreas;
+                options.MergedViews = m_exportMergeFiles;
+                options.ImageFormat = m_dwfImageFormat;
+                options.ImageQuality = m_dwfImageQuality;
+                exported = m_activeDoc.Export(m_exportFolder, m_exportFileName, views, options);
+            }
+            transaction.Commit();
+
+            return exported;
+        }
+        #endregion
+    }
+}

SDK/Samples/ImportExport/CS/Export/ExportDWFOptionForm.Designer.cs

@@ -0,0 +1,232 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// Provide a dialog which provides the options of lower priority information 
+    /// for export DWF format
+    /// </summary>
+    partial class ExportDWFOptionForm
+    {
+        /// <summary>
+        /// Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        /// Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Windows Form Designer generated code
+
+        /// <summary>
+        /// Required method for Designer support - do not modify
+        /// the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            this.groupBox1 = new System.Windows.Forms.GroupBox();
+            this.checkBoxRoomsAndAreas = new System.Windows.Forms.CheckBox();
+            this.checkBoxModelElements = new System.Windows.Forms.CheckBox();
+            this.buttonOK = new System.Windows.Forms.Button();
+            this.buttonCancel = new System.Windows.Forms.Button();
+            this.checkBoxMergeViews = new System.Windows.Forms.CheckBox();
+            this.groupBoxGraphicsSetting = new System.Windows.Forms.GroupBox();
+            this.comboBoxImageQuality = new System.Windows.Forms.ComboBox();
+            this.labelImageQuality = new System.Windows.Forms.Label();
+            this.radioButtonCompressedFormat = new System.Windows.Forms.RadioButton();
+            this.radioButtonStandardFormat = new System.Windows.Forms.RadioButton();
+            this.groupBox1.SuspendLayout();
+            this.groupBoxGraphicsSetting.SuspendLayout();
+            this.SuspendLayout();
+            // 
+            // groupBox1
+            // 
+            this.groupBox1.Controls.Add(this.checkBoxRoomsAndAreas);
+            this.groupBox1.Controls.Add(this.checkBoxModelElements);
+            this.groupBox1.Location = new System.Drawing.Point(13, 13);
+            this.groupBox1.Name = "groupBox1";
+            this.groupBox1.Size = new System.Drawing.Size(308, 68);
+            this.groupBox1.TabIndex = 0;
+            this.groupBox1.TabStop = false;
+            this.groupBox1.Text = "Export Object Data";
+            // 
+            // checkBoxRoomsAndAreas
+            // 
+            this.checkBoxRoomsAndAreas.AutoSize = true;
+            this.checkBoxRoomsAndAreas.Location = new System.Drawing.Point(10, 43);
+            this.checkBoxRoomsAndAreas.Name = "checkBoxRoomsAndAreas";
+            this.checkBoxRoomsAndAreas.Size = new System.Drawing.Size(110, 17);
+            this.checkBoxRoomsAndAreas.TabIndex = 0;
+            this.checkBoxRoomsAndAreas.Text = "Rooms and Areas";
+            this.checkBoxRoomsAndAreas.UseVisualStyleBackColor = true;
+            // 
+            // checkBoxModelElements
+            // 
+            this.checkBoxModelElements.AutoSize = true;
+            this.checkBoxModelElements.Location = new System.Drawing.Point(10, 20);
+            this.checkBoxModelElements.Name = "checkBoxModelElements";
+            this.checkBoxModelElements.Size = new System.Drawing.Size(100, 17);
+            this.checkBoxModelElements.TabIndex = 0;
+            this.checkBoxModelElements.Text = "Model Elements";
+            this.checkBoxModelElements.UseVisualStyleBackColor = true;
+            this.checkBoxModelElements.CheckedChanged += new System.EventHandler(this.checkBoxModelElements_CheckedChanged);
+            // 
+            // buttonOK
+            // 
+            this.buttonOK.DialogResult = System.Windows.Forms.DialogResult.OK;
+            this.buttonOK.Location = new System.Drawing.Point(114, 230);
+            this.buttonOK.Name = "buttonOK";
+            this.buttonOK.Size = new System.Drawing.Size(91, 23);
+            this.buttonOK.TabIndex = 1;
+            this.buttonOK.Text = "&OK";
+            this.buttonOK.UseVisualStyleBackColor = true;
+            this.buttonOK.Click += new System.EventHandler(this.buttonOK_Click);
+            // 
+            // buttonCancel
+            // 
+            this.buttonCancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
+            this.buttonCancel.Location = new System.Drawing.Point(220, 230);
+            this.buttonCancel.Name = "buttonCancel";
+            this.buttonCancel.Size = new System.Drawing.Size(101, 23);
+            this.buttonCancel.TabIndex = 1;
+            this.buttonCancel.Text = "&Cancel";
+            this.buttonCancel.UseVisualStyleBackColor = true;
+            // 
+            // checkBoxMergeViews
+            // 
+            this.checkBoxMergeViews.AutoSize = true;
+            this.checkBoxMergeViews.Location = new System.Drawing.Point(23, 195);
+            this.checkBoxMergeViews.Name = "checkBoxMergeViews";
+            this.checkBoxMergeViews.Size = new System.Drawing.Size(226, 17);
+            this.checkBoxMergeViews.TabIndex = 4;
+            this.checkBoxMergeViews.Text = "Create separate files for each view/sheet";
+            this.checkBoxMergeViews.UseVisualStyleBackColor = true;
+            // 
+            // groupBoxGraphicsSetting
+            // 
+            this.groupBoxGraphicsSetting.Controls.Add(this.comboBoxImageQuality);
+            this.groupBoxGraphicsSetting.Controls.Add(this.labelImageQuality);
+            this.groupBoxGraphicsSetting.Controls.Add(this.radioButtonCompressedFormat);
+            this.groupBoxGraphicsSetting.Controls.Add(this.radioButtonStandardFormat);
+            this.groupBoxGraphicsSetting.Location = new System.Drawing.Point(13, 88);
+            this.groupBoxGraphicsSetting.Name = "groupBoxGraphicsSetting";
+            this.groupBoxGraphicsSetting.Size = new System.Drawing.Size(308, 100);
+            this.groupBoxGraphicsSetting.TabIndex = 5;
+            this.groupBoxGraphicsSetting.TabStop = false;
+            this.groupBoxGraphicsSetting.Text = "Graphics Settings";
+            // 
+            // comboBoxImageQuality
+            // 
+            this.comboBoxImageQuality.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
+            this.comboBoxImageQuality.FormattingEnabled = true;
+            this.comboBoxImageQuality.Location = new System.Drawing.Point(129, 66);
+            this.comboBoxImageQuality.Name = "comboBoxImageQuality";
+            this.comboBoxImageQuality.Size = new System.Drawing.Size(163, 21);
+            this.comboBoxImageQuality.TabIndex = 3;
+            // 
+            // labelImageQuality
+            // 
+            this.labelImageQuality.AutoSize = true;
+            this.labelImageQuality.Location = new System.Drawing.Point(54, 69);
+            this.labelImageQuality.Name = "labelImageQuality";
+            this.labelImageQuality.Size = new System.Drawing.Size(78, 13);
+            this.labelImageQuality.TabIndex = 2;
+            this.labelImageQuality.Text = "Image Quality:";
+            // 
+            // radioButtonCompressedFormat
+            // 
+            this.radioButtonCompressedFormat.AutoSize = true;
+            this.radioButtonCompressedFormat.Location = new System.Drawing.Point(10, 41);
+            this.radioButtonCompressedFormat.Name = "radioButtonCompressedFormat";
+            this.radioButtonCompressedFormat.Size = new System.Drawing.Size(170, 17);
+            this.radioButtonCompressedFormat.TabIndex = 0;
+            this.radioButtonCompressedFormat.TabStop = true;
+            this.radioButtonCompressedFormat.Text = "Use compressed raster format";
+            this.radioButtonCompressedFormat.UseVisualStyleBackColor = true;
+            this.radioButtonCompressedFormat.CheckedChanged += new System.EventHandler(this.radioButtonCompressedFormat_CheckedChanged);
+            // 
+            // radioButtonStandardFormat
+            // 
+            this.radioButtonStandardFormat.AutoSize = true;
+            this.radioButtonStandardFormat.Location = new System.Drawing.Point(10, 20);
+            this.radioButtonStandardFormat.Name = "radioButtonStandardFormat";
+            this.radioButtonStandardFormat.Size = new System.Drawing.Size(124, 17);
+            this.radioButtonStandardFormat.TabIndex = 0;
+            this.radioButtonStandardFormat.TabStop = true;
+            this.radioButtonStandardFormat.Text = "Use standard format";
+            this.radioButtonStandardFormat.UseVisualStyleBackColor = true;
+            // 
+            // ExportDWFOptionForm
+            // 
+            this.AcceptButton = this.buttonOK;
+            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.CancelButton = this.buttonCancel;
+            this.ClientSize = new System.Drawing.Size(335, 262);
+            this.Controls.Add(this.groupBoxGraphicsSetting);
+            this.Controls.Add(this.checkBoxMergeViews);
+            this.Controls.Add(this.buttonCancel);
+            this.Controls.Add(this.buttonOK);
+            this.Controls.Add(this.groupBox1);
+            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
+            this.MaximizeBox = false;
+            this.MinimizeBox = false;
+            this.Name = "ExportDWFOptionForm";
+            this.ShowIcon = false;
+            this.ShowInTaskbar = false;
+            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
+            this.Text = "Export DWF Options";
+            this.groupBox1.ResumeLayout(false);
+            this.groupBox1.PerformLayout();
+            this.groupBoxGraphicsSetting.ResumeLayout(false);
+            this.groupBoxGraphicsSetting.PerformLayout();
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+        }
+
+        #endregion
+
+        private System.Windows.Forms.GroupBox groupBox1;
+        private System.Windows.Forms.CheckBox checkBoxRoomsAndAreas;
+        private System.Windows.Forms.CheckBox checkBoxModelElements;
+        private System.Windows.Forms.Button buttonOK;
+        private System.Windows.Forms.Button buttonCancel;
+        private System.Windows.Forms.CheckBox checkBoxMergeViews;
+        private System.Windows.Forms.GroupBox groupBoxGraphicsSetting;
+        private System.Windows.Forms.ComboBox comboBoxImageQuality;
+        private System.Windows.Forms.Label labelImageQuality;
+        private System.Windows.Forms.RadioButton radioButtonCompressedFormat;
+        private System.Windows.Forms.RadioButton radioButtonStandardFormat;
+    }
+}

SDK/Samples/ImportExport/CS/Export/ExportDWFOptionForm.cs

@@ -0,0 +1,99 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Text;
+using System.Windows.Forms;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// Data class which stores information of lower priority for exporting DWF(x) format.
+    /// </summary>
+    public partial class ExportDWFOptionForm : System.Windows.Forms.Form
+    {
+        /// <summary>
+        /// ExportDWFData object
+        /// </summary>
+        private ExportDWFData m_data;
+
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        /// <param name="data">Data class object</param>
+        public ExportDWFOptionForm(ExportDWFData data)
+        {
+            m_data = data;
+            InitializeComponent();
+            Initialize();
+        }
+
+        /// <summary>
+        /// Initialize controls
+        /// </summary>
+        private void Initialize()
+        {
+            checkBoxModelElements.Checked = m_data.ExportObjectData;
+            checkBoxRoomsAndAreas.Checked = m_data.ExportAreas;
+            radioButtonStandardFormat.Checked = true;
+            radioButtonCompressedFormat.Checked = false;
+            labelImageQuality.Enabled = false;
+            comboBoxImageQuality.Enabled = false;
+            comboBoxImageQuality.DataSource = m_data.ImageQualities;
+            checkBoxMergeViews.Enabled = !m_data.CurrentViewOnly;
+            checkBoxMergeViews.Checked = !m_data.CurrentViewOnly;
+            checkBoxMergeViews.Text = "Combine selected views and sheets into a single file";
+        }
+
+        private void buttonOK_Click(object sender, EventArgs e)
+        {
+            m_data.ExportObjectData = checkBoxModelElements.Checked;
+            m_data.ExportAreas = checkBoxRoomsAndAreas.Enabled ? checkBoxRoomsAndAreas.Checked : false;
+            m_data.ExportMergeFiles = checkBoxMergeViews.Checked;
+            if (radioButtonStandardFormat.Checked)
+            {
+                m_data.DwfImageFormat = Autodesk.Revit.DB.DWFImageFormat.Lossless;
+                m_data.DwfImageQuality = Autodesk.Revit.DB.DWFImageQuality.Default;
+            }
+            else
+            {
+                m_data.DwfImageFormat = Autodesk.Revit.DB.DWFImageFormat.Lossy;
+                m_data.DwfImageQuality = m_data.ImageQualities[comboBoxImageQuality.SelectedIndex];
+            }
+        }
+
+        private void checkBoxModelElements_CheckedChanged(object sender, EventArgs e)
+        {
+            checkBoxRoomsAndAreas.Enabled = checkBoxModelElements.Checked ? true : false;
+        }
+
+        private void radioButtonCompressedFormat_CheckedChanged(object sender, EventArgs e)
+        {
+            labelImageQuality.Enabled = radioButtonCompressedFormat.Checked;
+            comboBoxImageQuality.Enabled = radioButtonCompressedFormat.Checked;
+        }
+    }
+}

SDK/Samples/ImportExport/CS/Export/ExportDWFOptionForm.resx

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

SDK/Samples/ImportExport/CS/Export/ExportDWGData.cs

@@ -0,0 +1,199 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Text;
+using System.Reflection;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+
+using Autodesk.Revit;
+using Autodesk.Revit.DB;
+using Autodesk.Revit.UI;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// Data class which stores the main information for exporting dwg format
+    /// </summary>
+    public class ExportDWGData : ExportDataWithViews
+    {
+        #region Class Member Variables
+        /// <summary>
+        /// Data class ExportOptionsData
+        /// </summary>
+        private ExportBaseOptionsData m_exportOptionsData;
+
+        /// <summary>
+        /// String list of AutoCAD versions
+        /// </summary>
+        private List<String> m_fileVersion;
+
+        /// <summary>
+        /// List of Autodesk.Revit.DB.ACADVersion defined in Revit
+        /// </summary>
+        private List<Autodesk.Revit.DB.ACADVersion> m_enumFileVersion;
+
+        /// <summary>
+        /// File version option to export
+        /// </summary>
+        private Autodesk.Revit.DB.ACADVersion m_exportFileVersion;
+        #endregion
+
+        #region Class Properties
+        /// <summary>
+        /// Data class ExportOptionsData
+        /// </summary>
+        public ExportBaseOptionsData ExportOptionsData
+        {
+            get 
+            { 
+                return m_exportOptionsData; 
+            }
+            set 
+            { 
+                m_exportOptionsData = value; 
+            }
+        }
+  
+        /// <summary>
+        /// String collection of AutoCAD versions
+        /// </summary>
+        public ReadOnlyCollection<String> FileVersion
+        {
+            get 
+            { 
+                return new ReadOnlyCollection<String>(m_fileVersion); 
+            }
+        }
+
+        /// <summary>
+        /// Collection of Autodesk.Revit.DB.ACADVersion defined in Revit
+        /// </summary>
+        public ReadOnlyCollection<Autodesk.Revit.DB.ACADVersion> EnumFileVersion
+        {            
+            get 
+            {
+                return new ReadOnlyCollection<Autodesk.Revit.DB.ACADVersion>(m_enumFileVersion); 
+            }
+        }
+
+        /// <summary>
+        /// File version option to export
+        /// </summary>
+        public Autodesk.Revit.DB.ACADVersion ExportFileVersion
+        {
+            get 
+            { 
+                return m_exportFileVersion; 
+            }
+            set 
+            { 
+                m_exportFileVersion = value; 
+            }
+        }        
+        #endregion
+
+        #region Class Member Methods
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        /// <param name="commandData">Revit command data</param>
+        /// <param name="exportFormat">Format to export</param>
+        public ExportDWGData(ExternalCommandData commandData, ExportFormat exportFormat)
+            : base(commandData, exportFormat)
+        {
+            m_exportOptionsData = new ExportBaseOptionsData();
+
+            Initialize();
+        }
+
+        /// <summary>
+        /// Initialize the variables
+        /// </summary>
+        private void Initialize()
+        {
+            //AutoCAD versions
+            m_fileVersion = new List<String>();
+            m_enumFileVersion = new List<Autodesk.Revit.DB.ACADVersion>();
+            m_fileVersion.Add("AutoCAD 2013 DWG Files (*.dwg)");
+            m_enumFileVersion.Add(Autodesk.Revit.DB.ACADVersion.R2013);
+            m_fileVersion.Add("AutoCAD 2010 DWG Files (*.dwg)");
+            m_enumFileVersion.Add(Autodesk.Revit.DB.ACADVersion.R2010);
+            m_fileVersion.Add("AutoCAD 2007 DWG Files (*.dwg)");
+            m_enumFileVersion.Add(Autodesk.Revit.DB.ACADVersion.R2007);
+
+
+            StringBuilder tmp = new StringBuilder();
+            foreach (String version in m_fileVersion)
+            {
+                tmp.Append(version + "|*.dwg|");
+            }
+            m_filter = tmp.ToString().TrimEnd('|');
+            m_title = "Export DWG";
+        }
+
+        /// <summary>
+        /// Collect the parameters and export
+        /// </summary>
+        /// <returns></returns>
+        public override bool Export()
+        {
+            base.Export();
+
+            bool exported = false;
+            //parameter :  views
+            IList<ElementId> views = new List<ElementId>();
+            if (m_currentViewOnly)
+            {
+                views.Add(m_activeDoc.ActiveView.Id);
+            }
+            else
+            {
+                foreach (View view in m_selectViewsData.SelectedViews)
+                {
+                    views.Add(view.Id);
+                }
+            }
+
+            // Default values
+            m_exportFileVersion = ACADVersion.R2010;
+            //parameter : DWGExportOptions dwgExportOptions
+            DWGExportOptions dwgExportOptions = new DWGExportOptions();
+            dwgExportOptions.ExportingAreas = m_exportOptionsData.ExportAreas;
+            dwgExportOptions.ExportOfSolids = m_exportOptionsData.ExportSolid;
+            dwgExportOptions.FileVersion = m_exportFileVersion;
+            dwgExportOptions.LayerMapping = m_exportOptionsData.ExportLayerMapping;
+            dwgExportOptions.LineScaling = m_exportOptionsData.ExportLineScaling;
+            dwgExportOptions.MergedViews = m_exportOptionsData.ExportMergeFiles;
+            dwgExportOptions.PropOverrides = m_exportOptionsData.ExportLayersAndProperties;
+            dwgExportOptions.SharedCoords = m_exportOptionsData.ExportCoorSystem;
+            dwgExportOptions.TargetUnit = m_exportOptionsData.ExportUnit;
+
+            //Export
+            exported = m_activeDoc.Export(m_exportFolder, m_exportFileName, views, dwgExportOptions);
+
+            return exported;
+        }
+        #endregion
+    }
+}

SDK/Samples/ImportExport/CS/Export/ExportDWGOptionsData.cs

@@ -0,0 +1,469 @@
+//
+// (C) Copyright 2003-2014 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Text;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+
+using Autodesk.Revit;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// Data class which stores lower priority information for exporting dwg format
+    /// </summary>
+    public class ExportDWGOptionsData
+    {
+        #region Class Memeber Variables
+        /// <summary>
+        /// String list of Layers and properties used in UI
+        /// </summary>
+        List<String> m_layersAndProperties;
+
+        /// <summary>
+        /// List of Autodesk.Revit.DB.PropOverrideMode
+        /// </summary>
+        List<Autodesk.Revit.DB.PropOverrideMode> m_enumLayersAndProperties;
+
+        /// <summary>
+        /// String list of Layer Settings used in UI
+        /// </summary>
+        List<String> m_layerMapping;
+
+        /// <summary>
+        /// String list of layer settings values defined in Revit 
+        /// </summary>
+        List<String> m_enumLayerMapping;
+
+        /// <summary>
+        /// Layer setting option to export
+        /// </summary>
+        String m_exportLayerMapping;
+
+        /// <summary>
+        /// String list of Linetype scaling used in UI
+        /// </summary>
+        List<String> m_lineScaling;
+
+        /// <summary>
+        /// PropOverrideMode Option to export
+        /// </summary>
+        Autodesk.Revit.DB.PropOverrideMode m_exportLayersAndProperties;
+
+        /// <summary>
+        /// List of Autodesk.Revit.DB.LineScaling defined in Revit
+        /// </summary>
+        List<Autodesk.Revit.DB.LineScaling> m_enumLineScaling;
+
+        /// <summary>
+        /// Line scaling option to export
+        /// </summary>
+        Autodesk.Revit.DB.LineScaling m_exportLineScaling;
+
+        /// <summary>
+        /// String list of Coordinate system basis
+        /// </summary>
+        List<String> m_coorSystem;
+
+        /// <summary>
+        /// List of values whether to use shared coordinate system
+        /// </summary>
+        List<bool> m_enumCoorSystem;
+
+        /// <summary>
+        /// Coordinate system basis option to export
+        /// </summary>
+        bool m_exportCoorSystem;
+
+        /// <summary>
+        /// String list of DWG unit
+        /// </summary>
+        List<String> m_units;
+
+        /// <summary>
+        /// List of Autodesk.Revit.DB.ExportUnit values defined in Revit
+        /// </summary>
+        List<Autodesk.Revit.DB.ExportUnit> m_enumUnits;
+
+        /// <summary>
+        /// Export unit option to export
+        /// </summary>
+        Autodesk.Revit.DB.ExportUnit m_exportUnit;
+
+        /// <summary>
+        /// String list of solid used in UI
+        /// </summary>
+        List<String> m_solids;
+
+        /// <summary>
+        /// List of Autodesk.Revit.DB.SolidGeometry defined in Revit
+        /// </summary>
+        List<Autodesk.Revit.DB.SolidGeometry> m_enumSolids;
+
+        /// <summary>
+        /// Solid geometry option to export
+        /// </summary>
+        Autodesk.Revit.DB.SolidGeometry m_exportSolid;
+
+        /// <summary>
+        /// Whether to create separate files for each view/sheet
+        /// </summary>
+        bool m_exportMergeFiles;
+
+        //Export rooms and areas as polylines
+        bool m_exportAreas;
+        #endregion
+
+        #region Class Properties
+        /// <summary>
+        /// String collection of Layers and properties used in UI
+        /// </summary>
+        public ReadOnlyCollection<String> LayersAndProperties
+        {
+            get 
+            { 
+                return new ReadOnlyCollection<String>(m_layersAndProperties); 
+            }
+        }        
+
+        /// <summary>
+        /// Collection of Autodesk.Revit.DB.PropOverrideMode
+        /// </summary>
+        public ReadOnlyCollection<Autodesk.Revit.DB.PropOverrideMode> EnumLayersAndProperties
+        {
+            get 
+            { 
+                return new ReadOnlyCollection<Autodesk.Revit.DB.PropOverrideMode>(m_enumLayersAndProperties); 
+            }
+        } 
+
+        /// <summary>
+        /// PropOverrideMode Option to export
+        /// </summary>
+        public Autodesk.Revit.DB.PropOverrideMode ExportLayersAndProperties
+        {
+            get 
+            { 
+                return m_exportLayersAndProperties; 
+            }
+            set 
+            { 
+                m_exportLayersAndProperties = value; 
+            }
+        }
+
+        /// <summary>
+        /// String collection of Layer Settings used in UI
+        /// </summary>
+        public ReadOnlyCollection<String> LayerMapping
+        {
+            get 
+            {
+                return new ReadOnlyCollection<String>(m_layerMapping); 
+            }
+        }  
+
+        /// <summary>
+        /// String collection of layer settings values defined in Revit  
+        /// </summary>
+        public ReadOnlyCollection<String> EnumLayerMapping
+        {
+            get 
+            {
+                return new ReadOnlyCollection<String>(m_enumLayerMapping); 
+            }
+        }
+
+        /// <summary>
+        /// Layer setting option to export
+        /// </summary>
+        public String ExportLayerMapping
+        {
+            get 
+            { 
+                return m_exportLayerMapping; 
+            }
+            set 
+            { 
+                m_exportLayerMapping = value;
+            }
+        }
+
+        /// <summary>
+        /// String collection of Linetype scaling used in UI
+        /// </summary>
+        public ReadOnlyCollection<String> LineScaling
+        {
+            get 
+            {
+                return new ReadOnlyCollection<String>(m_lineScaling); 
+            }
+        }
+
+        /// <summary>
+        /// Collection of Autodesk.Revit.DB.LineScaling defined in Revit
+        /// </summary>
+        public ReadOnlyCollection<Autodesk.Revit.DB.LineScaling> EnumLineScaling
+        {
+            get 
+            { 
+                return new ReadOnlyCollection<Autodesk.Revit.DB.LineScaling>(m_enumLineScaling); 
+            }
+        }      
+
+        /// <summary>
+        /// Line scaling option to export
+        /// </summary>
+        public Autodesk.Revit.DB.LineScaling ExportLineScaling
+        {
+            get 
+            { 
+                return m_exportLineScaling; 
+            }
+            set 
+            { 
+                m_exportLineScaling = value;
+            }
+        }
+
+        /// <summary>
+        /// String collection of Coordinate system basis
+        /// </summary>
+        public ReadOnlyCollection<String> CoorSystem
+        {
+            get 
+            {
+                return new ReadOnlyCollection<String>(m_coorSystem); 
+            }
+        }
+
+        /// <summary>
+        /// Collection of values whether to use shared coordinate system
+        /// </summary>
+        public ReadOnlyCollection<bool> EnumCoorSystem
+        {
+            get 
+            { 
+                return new ReadOnlyCollection<bool>(m_enumCoorSystem); 
+            }
+        }   
+
+        /// <summary>
+        /// Coordinate system basis option to export
+        /// </summary>
+        public bool ExportCoorSystem
+        {
+            get 
+            { 
+                return m_exportCoorSystem; 
+            }
+            set 
+            { 
+                m_exportCoorSystem = value;
+            }
+        } 
+
+        /// <summary>
+        /// String collection of DWG unit
+        /// </summary>
+        public ReadOnlyCollection<String> Units
+        {
+            get 
+            {
+                return new ReadOnlyCollection<String>(m_units); 
+            }
+        }
+
+        /// <summary>
+        /// Collection of Autodesk.Revit.DB.ExportUnit values defined in Revit
+        /// </summary>
+        public ReadOnlyCollection<Autodesk.Revit.DB.ExportUnit> EnumUnits
+        {
+            get 
+            { 
+                return new ReadOnlyCollection<Autodesk.Revit.DB.ExportUnit>(m_enumUnits); 
+            }
+        }  
+
+        /// <summary>
+        /// Export unit option to export
+        /// </summary>
+        public Autodesk.Revit.DB.ExportUnit ExportUnit
+        {
+            get 
+            { 
+                return m_exportUnit; 
+            }
+            set 
+            { 
+                m_exportUnit = value; 
+            }
+        }    
+
+        /// <summary>
+        /// String collection of solid used in UI
+        /// </summary>
+        public ReadOnlyCollection<String> Solids
+        {
+            get
+            {
+                return new ReadOnlyCollection<String>(m_solids);
+            }
+        }
+
+        /// <summary>
+        /// Collection of Autodesk.Revit.DB.SolidGeometry defined in Revit
+        /// </summary>
+        public ReadOnlyCollection<Autodesk.Revit.DB.SolidGeometry> EnumSolids
+        {
+            get 
+            { 
+                return new ReadOnlyCollection<Autodesk.Revit.DB.SolidGeometry>(m_enumSolids);
+            }
+        }
+
+        /// <summary>
+        /// Property of solid geometry option to export
+        /// </summary>
+        public Autodesk.Revit.DB.SolidGeometry ExportSolid
+        {
+            get 
+            {
+                return m_exportSolid; 
+            }
+            set 
+            { 
+                m_exportSolid = value;
+            }
+        }
+
+        /// <summary>
+        /// Export rooms and areas as polylines
+        /// </summary>
+        public bool ExportAreas
+        {
+            get 
+            { 
+                return m_exportAreas;
+            }
+            set 
+            {
+                m_exportAreas = value; 
+            }
+        }
+
+        /// <summary>
+        /// Whether to create separate files for each view/sheet
+        /// </summary>
+        public bool ExportMergeFiles
+        {
+            get
+            {
+                return m_exportMergeFiles;
+            }
+            set
+            {
+                m_exportMergeFiles = value;
+            }
+        } 
+        #endregion
+
+
+        #region Class Member Methods
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        public ExportDWGOptionsData()
+        {
+            Initialize();
+        }
+
+        /// <summary>
+        /// Initialize values
+        /// </summary>
+        void Initialize()
+        {
+            //Layers and properties:
+            m_layersAndProperties = new List<String>();
+            m_enumLayersAndProperties = new List<Autodesk.Revit.DB.PropOverrideMode>();
+            m_layersAndProperties.Add("Category properties BYLAYER, overrides BYENTITY");
+            m_enumLayersAndProperties.Add(Autodesk.Revit.DB.PropOverrideMode.ByEntity);
+            m_layersAndProperties.Add("All properties BYLAYER, no overrides");
+            m_enumLayersAndProperties.Add(Autodesk.Revit.DB.PropOverrideMode.ByLayer);
+            m_layersAndProperties.Add("All properties BYLAYER, new Layers for overrides");
+            m_enumLayersAndProperties.Add(Autodesk.Revit.DB.PropOverrideMode.NewLayer);
+
+            //Layer Settings:
+            m_layerMapping = new List<String>();
+            m_enumLayerMapping = new List<String>();
+            m_layerMapping.Add("AIA - American Institute of Architects standard");
+            m_enumLayerMapping.Add("AIA");
+            m_layerMapping.Add("ISO13567 - ISO standard 13567");
+            m_enumLayerMapping.Add("ISO13567");
+            m_layerMapping.Add("CP83 - Singapore standard 83");
+            m_enumLayerMapping.Add("CP83");
+            m_layerMapping.Add("BS1192 - British standard 1192");
+            m_enumLayerMapping.Add("BS1192");
+
+            //Linetype scaling:
+            m_lineScaling = new List<String>();
+            m_enumLineScaling = new List<Autodesk.Revit.DB.LineScaling>();
+            m_lineScaling.Add("Scaled Linetype definitions");
+            m_enumLineScaling.Add(Autodesk.Revit.DB.LineScaling.ViewScale);
+            m_lineScaling.Add("ModelSpace (PSLTSCALE = 0)");
+            m_enumLineScaling.Add(Autodesk.Revit.DB.LineScaling.ModelSpace);
+            m_lineScaling.Add("Paperspace (PSLTSCALE = 1)");
+            m_enumLineScaling.Add(Autodesk.Revit.DB.LineScaling.PaperSpace);
+
+            //Coordinate system basis
+            m_coorSystem = new List<String>();
+            m_enumCoorSystem = new List<bool>();
+            m_coorSystem.Add("Project Internal");
+            m_enumCoorSystem.Add(false);
+            m_coorSystem.Add("Shared");
+            m_enumCoorSystem.Add(true);
+
+            //One DWG unit
+            m_units = new List<String>();
+            m_enumUnits = new List<Autodesk.Revit.DB.ExportUnit>();
+            m_units.Add(Autodesk.Revit.DB.ExportUnit.Foot.ToString().ToLower());
+            m_enumUnits.Add(Autodesk.Revit.DB.ExportUnit.Foot);
+            m_units.Add(Autodesk.Revit.DB.ExportUnit.Inch.ToString().ToLower());
+            m_enumUnits.Add(Autodesk.Revit.DB.ExportUnit.Inch);
+            m_units.Add(Autodesk.Revit.DB.ExportUnit.Meter.ToString().ToLower());
+            m_enumUnits.Add(Autodesk.Revit.DB.ExportUnit.Meter);
+            m_units.Add(Autodesk.Revit.DB.ExportUnit.Centimeter.ToString().ToLower());
+            m_enumUnits.Add(Autodesk.Revit.DB.ExportUnit.Centimeter);
+            m_units.Add(Autodesk.Revit.DB.ExportUnit.Millimeter.ToString().ToLower());
+            m_enumUnits.Add(Autodesk.Revit.DB.ExportUnit.Millimeter);
+
+            m_solids = new List<String>();
+            m_enumSolids = new List<Autodesk.Revit.DB.SolidGeometry>();
+            m_solids.Add("Export as polymesh");
+            m_enumSolids.Add(Autodesk.Revit.DB.SolidGeometry.Polymesh);
+            m_solids.Add("Export as ACIS solids");
+            m_enumSolids.Add(Autodesk.Revit.DB.SolidGeometry.ACIS);
+        }
+        #endregion
+    }
+}

SDK/Samples/ImportExport/CS/Export/ExportDXFData.cs

@@ -0,0 +1,198 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Text;
+using System.Reflection;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;using System.Windows.Forms;
+
+using Autodesk.Revit;
+using Autodesk.Revit.DB;
+using Autodesk.Revit.UI;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// Data class which stores the main information for exporting dxf format
+    /// </summary>
+    public class ExportDXFData : ExportDataWithViews
+    {
+        #region Class Member Variables
+        /// <summary>
+        /// Data class ExportOptionsData
+        /// </summary>
+        private ExportBaseOptionsData m_exportOptionsData;
+
+        /// <summary>
+        /// String list of AutoCAD versions
+        /// </summary>
+        private List<String> m_fileVersion;
+
+        /// <summary>
+        /// List of Autodesk.Revit.DB.ACADVersion defined in Revit
+        /// </summary>
+        private List<Autodesk.Revit.DB.ACADVersion> m_enumFileVersion;
+
+        /// <summary>
+        /// File version option to export
+        /// </summary>
+        private Autodesk.Revit.DB.ACADVersion m_exportFileVersion;
+        #endregion
+
+        #region Class Properties
+        /// <summary>
+        /// Data class ExportOptionsData
+        /// </summary>
+        public ExportBaseOptionsData ExportOptionsData
+        {
+            get 
+            { 
+                return m_exportOptionsData; 
+            }
+            set 
+            { 
+                m_exportOptionsData = value; 
+            }
+        }
+  
+        /// <summary>
+        /// String collection of AutoCAD versions
+        /// </summary>
+        public ReadOnlyCollection<String> FileVersion
+        {
+            get 
+            { 
+                return new ReadOnlyCollection<String>(m_fileVersion); 
+            }
+        }
+
+        /// <summary>
+        /// Collection of Autodesk.Revit.DB.ACADVersion defined in Revit
+        /// </summary>
+        public ReadOnlyCollection<Autodesk.Revit.DB.ACADVersion> EnumFileVersion
+        {            
+            get 
+            {
+                return new ReadOnlyCollection<Autodesk.Revit.DB.ACADVersion>(m_enumFileVersion); 
+            }
+        }
+
+        /// <summary>
+        /// File version option to export
+        /// </summary>
+        public Autodesk.Revit.DB.ACADVersion ExportFileVersion
+        {
+            get 
+            { 
+                return m_exportFileVersion; 
+            }
+            set 
+            { 
+                m_exportFileVersion = value; 
+            }
+        }        
+        #endregion
+
+        #region Class Member Methods
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        /// <param name="commandData">Revit command data</param>
+        /// <param name="exportFormat">Format to export</param>
+        public ExportDXFData(ExternalCommandData commandData, ExportFormat exportFormat)
+            : base(commandData, exportFormat)
+        {
+            m_exportOptionsData = new ExportBaseOptionsData();
+
+            Initialize();
+        }
+
+        /// <summary>
+        /// Initialize the variables
+        /// </summary>
+        private void Initialize()
+        {
+            //AutoCAD versions
+            m_fileVersion = new List<String>();
+            m_enumFileVersion = new List<Autodesk.Revit.DB.ACADVersion>();
+            m_fileVersion.Add("AutoCAD 2013 DXF Files (*.dxf)");
+            m_enumFileVersion.Add(Autodesk.Revit.DB.ACADVersion.R2013);
+            m_fileVersion.Add("AutoCAD 2010 DXF Files (*.dxf)");
+            m_enumFileVersion.Add(Autodesk.Revit.DB.ACADVersion.R2010);
+            m_fileVersion.Add("AutoCAD 2007 DXF Files (*.dxf)");
+            m_enumFileVersion.Add(Autodesk.Revit.DB.ACADVersion.R2007);
+
+            StringBuilder tmp = new StringBuilder();
+            foreach (String version in m_fileVersion)
+            {
+                tmp.Append(version + "|*.dxf|");
+            }
+            m_filter = tmp.ToString().TrimEnd('|');
+            m_title = "Export DXF";
+        }
+
+        /// <summary>
+        /// Collect the parameters and export
+        /// </summary>
+        /// <returns></returns>
+        public override bool Export()
+        {
+            base.Export();
+
+            bool exported = false;
+
+            //parameter :  views
+            IList<ElementId> views = new List<ElementId>();
+            if (m_currentViewOnly)
+            {
+                views.Add(m_activeDoc.ActiveView.Id);
+            }
+            else
+            {
+                foreach (Autodesk.Revit.DB.View view in m_selectViewsData.SelectedViews)
+                {
+                    views.Add(view.Id);
+                }
+            }
+            // Default values
+            m_exportFileVersion = ACADVersion.R2010;
+            //parameter : DXFExportOptions dxfExportOptions
+            DXFExportOptions dxfExportOptions = new DXFExportOptions();
+            dxfExportOptions.ExportingAreas = m_exportOptionsData.ExportAreas;
+            dxfExportOptions.ExportOfSolids = m_exportOptionsData.ExportSolid;
+            dxfExportOptions.FileVersion = m_exportFileVersion;
+            dxfExportOptions.LayerMapping = m_exportOptionsData.ExportLayerMapping;
+            dxfExportOptions.LineScaling = m_exportOptionsData.ExportLineScaling;
+            //dxfExportOptions.MergedViews = m_exportOptionsData.ExportMergeFiles;
+            dxfExportOptions.PropOverrides = m_exportOptionsData.ExportLayersAndProperties;
+            dxfExportOptions.SharedCoords = m_exportOptionsData.ExportCoorSystem;
+            dxfExportOptions.TargetUnit = m_exportOptionsData.ExportUnit;
+
+            //Export
+            exported = m_activeDoc.Export(m_exportFolder, m_exportFileName, views, dxfExportOptions);
+
+            return exported;
+        }
+        #endregion
+    }
+}

SDK/Samples/ImportExport/CS/Export/ExportData.cs

@@ -0,0 +1,338 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Text;
+using System.Reflection;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.IO;
+
+using Autodesk.Revit;
+using Autodesk.Revit.DB;
+using Autodesk.Revit.UI;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// Base data class which stores the basic information for export
+    /// </summary>
+    public class ExportData
+    {
+        #region Class Member Variables
+        /// <summary>
+        /// Revit command data
+        /// </summary>
+        protected ExternalCommandData m_commandData;
+
+        /// <summary>
+        /// Active document
+        /// </summary>
+        protected Document m_activeDoc;
+
+        /// <summary>
+        /// File Name or Prefix to be used
+        /// </summary>
+        protected String m_exportFileName;
+
+        /// <summary>
+        /// Directory to store the exported file
+        /// </summary>
+        protected String m_exportFolder;
+
+        /// <summary>
+        /// ActiveDocument Name
+        /// </summary>
+        protected String m_activeDocName;
+
+        /// <summary>
+        /// ActiveView Name
+        /// </summary>
+        protected String m_activeViewName;
+
+
+        /// <summary>
+        /// Whether current view is a 3D view
+        /// </summary>
+        protected bool m_is3DView;
+
+        /// <summary>
+        /// The format to be exported
+        /// </summary>
+        protected ExportFormat m_exportFormat;
+
+        /// <summary>
+        /// The filter which will be used in file saving dialog
+        /// </summary>
+        protected String m_filter;
+
+        /// <summary>
+        /// The title of exporting dialog
+        /// </summary>
+        protected String m_title;
+        #endregion
+
+        #region Class Properties
+        /// <summary>
+        /// Revit command data
+        /// </summary>
+        public ExternalCommandData CommandData
+        {
+            get 
+            { 
+                return m_commandData; 
+            }
+        }
+
+        /// <summary>
+        /// ActiveDocument
+        /// </summary>
+        public Document ActiveDocument
+        {
+
+            get
+            {
+                return m_activeDoc;
+            }
+
+        }
+
+        /// <summary>
+        /// File Name or Prefix to be used
+        /// </summary>
+        public String ExportFileName
+        {
+            get 
+            { 
+                return m_exportFileName; 
+            }
+            set 
+            { 
+                m_exportFileName = value; 
+            }
+        }  
+
+        /// <summary>
+        /// Directory to store the exported file
+        /// </summary>
+        public String ExportFolder
+        {
+            get 
+            { 
+                return m_exportFolder; 
+            }
+            set 
+            { 
+                m_exportFolder = value; 
+            }
+        }
+
+
+        /// <summary>
+        /// ActiveDocument Name
+        /// </summary>
+        public String ActiveDocName
+        {
+            get
+            {
+                return m_activeDocName;
+            }
+            set
+            {
+                m_activeDocName = value;
+            }
+        
+        }
+
+        /// <summary>
+        /// ActiveView Name
+        /// </summary>
+        public String ActiveViewName
+        {
+            get
+            {
+                return m_activeViewName;
+            }
+            set
+            {
+                m_activeViewName = value;
+            }
+        }
+
+
+        /// <summary>
+        /// Whether current view is a 3D view
+        /// </summary>
+        public bool Is3DView
+        {
+            get
+            {
+                return m_is3DView;
+            }
+            set
+            {
+                m_is3DView = value;
+            }
+        }
+
+        /// <summary>
+        /// The format to be exported
+        /// </summary>
+        public ExportFormat ExportFormat
+        {
+            get 
+            { 
+                return m_exportFormat; 
+            }
+            set 
+            { 
+                m_exportFormat = value; 
+            }
+        }
+
+        /// <summary>
+        /// The filter which will be used in file saving dialog
+        /// </summary>
+        public String Filter
+        {
+            get 
+            { 
+                return m_filter; 
+            }
+        }
+
+        /// <summary>
+        /// The title of exporting dialog
+        /// </summary>
+        public String Title
+        {
+            get 
+            { 
+                return m_title; 
+            }
+        }
+        #endregion
+
+
+        #region Class Member Methods
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        /// <param name="commandData">Revit command data</param>
+        /// <param name="exportFormat">Format to export</param>
+        public ExportData(ExternalCommandData commandData, ExportFormat exportFormat)
+        {
+            m_commandData = commandData;
+            m_activeDoc = commandData.Application.ActiveUIDocument.Document;
+            m_exportFormat = exportFormat;
+            m_filter = String.Empty;
+            Initialize();
+        }
+
+        /// <summary>
+        /// Initialize the variables
+        /// </summary>
+        private void Initialize()
+        {
+            //The directory into which the file will be exported
+            String dllFilePath = Assembly.GetExecutingAssembly().Location;
+            m_exportFolder = Path.GetDirectoryName(dllFilePath);
+
+            //The file name to be used by export
+            m_activeDocName = m_activeDoc.Title;
+            m_activeViewName = m_activeDoc.ActiveView.Name;
+            String viewType = m_activeDoc.ActiveView.ViewType.ToString();
+            m_exportFileName = m_activeDocName + "-" + viewType + "-" + m_activeViewName + "." + getExtension().ToString();
+
+            //Whether current active view is 3D view
+            if (m_activeDoc.ActiveView.ViewType == Autodesk.Revit.DB.ViewType.ThreeD)
+            {
+                m_is3DView = true;
+            }
+            else
+            {
+                m_is3DView = false;
+            }
+        }
+
+        /// <summary>
+        /// Get the extension of the file to export
+        /// </summary>
+        /// <returns></returns>
+        private String getExtension()
+        {
+            String extension = null;
+            switch (m_exportFormat)
+            {
+                case ExportFormat.DWG:
+                    extension = "dwg";
+                    break;
+                case ExportFormat.DXF:
+                    extension = "dxf";
+                    break;
+                case ExportFormat.SAT:
+                    extension = "sat";
+                    break;
+                case ExportFormat.DWF:
+                    extension = "dwf";
+                    break;
+                case ExportFormat.DWFx:
+                    extension = "dwfx";
+                    break;
+                case ExportFormat.GBXML:
+                    extension = "xml";
+                    break;
+                case ExportFormat.FBX:
+                    extension = "fbx";
+                    break;
+                case ExportFormat.DGN:
+                    extension = "dgn";
+                    break;
+                case ExportFormat.Image:
+                    extension = "";
+                    break;
+                case ExportFormat.PDF:
+                    extension = "pdf";
+                    break;
+                default:
+                    break;
+            }
+
+            return extension;
+        }
+
+        /// <summary>
+        /// Collect the parameters and export
+        /// </summary>
+        /// <returns></returns>
+        public virtual bool Export()
+        {
+            if (m_exportFolder == null || m_exportFileName == null)
+            {
+                throw new NullReferenceException();
+            }
+
+            return true;
+        }
+        #endregion
+    }
+}

SDK/Samples/ImportExport/CS/Export/ExportDataWithViews.cs

@@ -0,0 +1,126 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+using Autodesk.Revit;
+using Autodesk.Revit.DB;
+using Autodesk.Revit.UI;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// Base data class which stores the common information for exporting view related format
+    /// </summary>
+    public class ExportDataWithViews : ExportData
+    {
+        #region Class Member Variables
+        /// <summary>
+        /// Data class SelectViewsData
+        /// </summary>
+        protected SelectViewsData m_selectViewsData;
+
+        /// <summary>
+        /// Views to export
+        /// </summary>
+        private ViewSet m_exportViews;
+
+        /// <summary>
+        /// Whether to export current view only
+        /// </summary>
+        protected bool m_currentViewOnly;
+        #endregion
+
+        #region Class Properties
+        /// <summary>
+        /// Data class SelectViewsData
+        /// </summary>
+        public SelectViewsData SelectViewsData
+        {
+            get 
+            { 
+                return m_selectViewsData; 
+            }
+            set 
+            { 
+                m_selectViewsData = value; 
+            }
+        }
+
+        /// <summary>
+        /// Views to export
+        /// </summary>
+        public ViewSet ExportViews
+        {
+            get 
+            { 
+                return m_exportViews; 
+            }
+            set 
+            { 
+                m_exportViews = value; 
+            }
+        } 
+
+        /// <summary>
+        /// Whether to export current view only
+        /// </summary>
+        public bool CurrentViewOnly
+        {
+            get 
+            { 
+                return m_currentViewOnly; 
+            }
+            set 
+            { 
+                m_currentViewOnly = value; 
+            }
+        }
+        #endregion
+
+        #region Class Member Methods
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        /// <param name="commandData">Revit command data</param>
+        /// <param name="exportFormat">Format to export</param>
+        public ExportDataWithViews(ExternalCommandData commandData, ExportFormat exportFormat)
+            : base(commandData, exportFormat)
+        {
+            m_selectViewsData = new SelectViewsData(commandData);
+
+            Initialize();
+        }
+
+        /// <summary>
+        /// Initialize the variables
+        /// </summary>
+        private void Initialize()
+        {
+            //Views to export
+            m_exportViews = new ViewSet();
+        }
+        #endregion
+    }
+}

SDK/Samples/ImportExport/CS/Export/ExportFBXData.cs

@@ -0,0 +1,69 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+using Autodesk.Revit;
+using Autodesk.Revit.DB;
+using Autodesk.Revit.UI;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// Data class which stores the information for exporting fbx format
+    /// </summary>
+    class ExportFBXData : ExportData
+    {
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        /// <param name="commandData">Revit command data</param>
+        /// <param name="exportFormat">Format to export</param>
+        public ExportFBXData(ExternalCommandData commandData, ExportFormat exportFormat)
+            : base(commandData, exportFormat)
+        {
+            m_filter = "FBX Files |*.fbx";
+            m_title = "Export FBX";
+        }
+
+        /// <summary>
+        /// Export FBX format
+        /// </summary>
+        /// <returns></returns>
+        public override bool Export()
+        {
+            base.Export();
+
+            bool exported = false;
+            //parameter : ViewSet views
+            ViewSet views = new ViewSet();
+            views.Insert(m_activeDoc.ActiveView);
+
+            FBXExportOptions options = new FBXExportOptions();
+            exported = m_activeDoc.Export(m_exportFolder, m_exportFileName, views, options);
+
+            return exported;
+        }
+    }
+}

SDK/Samples/ImportExport/CS/Export/ExportGBXMLData.cs

@@ -0,0 +1,67 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+using Autodesk.Revit;
+using Autodesk.Revit.DB;
+using Autodesk.Revit.UI;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// Data class which stores the information for exporting gbxml format
+    /// </summary>
+    class ExportGBXMLData : ExportData
+    {
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        /// <param name="commandData">Revit command data</param>
+        /// <param name="exportFormat">Format to export</param>
+        public ExportGBXMLData(ExternalCommandData commandData, ExportFormat exportFormat)
+            : base(commandData, exportFormat)
+        {
+            m_filter = "XML Documents |*.xml";
+            m_title = "Export GBXML";
+        }
+
+        /// <summary>
+        /// Export GBXML format
+        /// </summary>
+        /// <returns></returns>
+        public override bool Export()
+        {
+            Transaction transaction = new Transaction(m_activeDoc, "Export_To_GBXML");
+            transaction.Start();
+            base.Export();
+
+            GBXMLExportOptions options = new GBXMLExportOptions();
+            bool exported = m_activeDoc.Export(m_exportFolder, m_exportFileName, options);
+            transaction.Commit();
+
+            return exported;
+        }
+    }
+}

SDK/Samples/ImportExport/CS/Export/ExportIMGData.cs

@@ -0,0 +1,96 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Collections.ObjectModel;
+using System.Windows.Forms;
+
+using Autodesk.Revit;
+using Autodesk.Revit.DB;
+using Autodesk.Revit.UI;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    class ExportIMGData : ExportDataWithViews
+    {
+        #region Class Member Variables
+
+        /// <summary>
+        /// String list of image type
+        /// </summary>
+        private List<String> m_imageType;
+
+        #endregion
+
+        #region Class Member Methods
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        /// <param name="commandData">Revit command data</param>
+        /// <param name="exportFormat">Format to export</param>
+        public ExportIMGData(ExternalCommandData commandData, ExportFormat exportFormat)
+            : base(commandData, exportFormat)
+        {
+            Initialize();
+        }
+
+        /// <summary>
+        /// Initialize the variables
+        /// </summary>
+        private void Initialize()
+        {
+            //Image type
+            m_imageType = new List<String>();
+            m_imageType.Add("(*.bmp)");
+            m_imageType.Add("(*.jpeg)");
+            m_imageType.Add("(*.png)");
+            m_imageType.Add("(*.tga)");
+            m_imageType.Add("(*.tif)");
+
+            StringBuilder tmp = new StringBuilder();
+            tmp.Append(m_imageType[0] + "|*.bmp|");
+            tmp.Append(m_imageType[1] + "|*.jpeg|");
+            tmp.Append(m_imageType[2] + "|*.png|");
+            tmp.Append(m_imageType[3] + "|*.tga|");
+            tmp.Append(m_imageType[4] + "|*.tif|");
+
+            m_filter = tmp.ToString().TrimEnd('|');
+            m_title = "Export IMG";
+        }
+
+
+        /// <summary>
+        /// Collect the parameters and export
+        /// </summary>
+        /// <returns></returns>
+        public override bool Export()
+        {
+            base.Export();
+            return true;
+        }
+
+        #endregion
+    }
+}

SDK/Samples/ImportExport/CS/Export/ExportIMGOptionsForm.Designer.cs

@@ -0,0 +1,470 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    partial class ExportIMGOptionsForm
+    {
+        /// <summary>
+        /// Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        /// Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Windows Form Designer generated code
+
+        /// <summary>
+        /// Required method for Designer support - do not modify
+        /// the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            this.outputGroupBox = new System.Windows.Forms.GroupBox();
+            this.saveAs = new System.Windows.Forms.TextBox();
+            this.name = new System.Windows.Forms.Label();
+            this.changePath = new System.Windows.Forms.Button();
+            this.exportRangeGroupBox = new System.Windows.Forms.GroupBox();
+            this.selectRange = new System.Windows.Forms.Button();
+            this.viewsSheetsOption = new System.Windows.Forms.RadioButton();
+            this.visiblePortionOption = new System.Windows.Forms.RadioButton();
+            this.currentWindowOption = new System.Windows.Forms.RadioButton();
+            this.imageSizeGroupBox = new System.Windows.Forms.GroupBox();
+            this.pixels = new System.Windows.Forms.Label();
+            this.pixelValue = new System.Windows.Forms.TextBox();
+            this.panel1 = new System.Windows.Forms.Panel();
+            this.verticalOption = new System.Windows.Forms.RadioButton();
+            this.horizontalOption = new System.Windows.Forms.RadioButton();
+            this.actual = new System.Windows.Forms.Label();
+            this.zoomSize = new System.Windows.Forms.NumericUpDown();
+            this.Direction = new System.Windows.Forms.Label();
+            this.zoomOption = new System.Windows.Forms.RadioButton();
+            this.fitToOption = new System.Windows.Forms.RadioButton();
+            this.formatGroupBox = new System.Windows.Forms.GroupBox();
+            this.RIQCom = new System.Windows.Forms.ComboBox();
+            this.noShadedCom = new System.Windows.Forms.ComboBox();
+            this.label1 = new System.Windows.Forms.Label();
+            this.Non = new System.Windows.Forms.Label();
+            this.shadedCom = new System.Windows.Forms.ComboBox();
+            this.shaded = new System.Windows.Forms.Label();
+            this.okButton = new System.Windows.Forms.Button();
+            this.cannelButton = new System.Windows.Forms.Button();
+            this.outputGroupBox.SuspendLayout();
+            this.exportRangeGroupBox.SuspendLayout();
+            this.imageSizeGroupBox.SuspendLayout();
+            this.panel1.SuspendLayout();
+            ((System.ComponentModel.ISupportInitialize)(this.zoomSize)).BeginInit();
+            this.formatGroupBox.SuspendLayout();
+            this.SuspendLayout();
+            // 
+            // outputGroupBox
+            // 
+            this.outputGroupBox.Controls.Add(this.saveAs);
+            this.outputGroupBox.Controls.Add(this.name);
+            this.outputGroupBox.Controls.Add(this.changePath);
+            this.outputGroupBox.Location = new System.Drawing.Point(12, 12);
+            this.outputGroupBox.Name = "outputGroupBox";
+            this.outputGroupBox.Size = new System.Drawing.Size(489, 58);
+            this.outputGroupBox.TabIndex = 0;
+            this.outputGroupBox.TabStop = false;
+            this.outputGroupBox.Text = "Output";
+            // 
+            // saveAs
+            // 
+            this.saveAs.Location = new System.Drawing.Point(55, 20);
+            this.saveAs.Name = "saveAs";
+            this.saveAs.Size = new System.Drawing.Size(385, 21);
+            this.saveAs.TabIndex = 1;
+            // 
+            // name
+            // 
+            this.name.AutoSize = true;
+            this.name.Location = new System.Drawing.Point(13, 24);
+            this.name.Name = "name";
+            this.name.Size = new System.Drawing.Size(38, 13);
+            this.name.TabIndex = 1;
+            this.name.Text = "Name:";
+            // 
+            // changePath
+            // 
+            this.changePath.Location = new System.Drawing.Point(443, 19);
+            this.changePath.Name = "changePath";
+            this.changePath.Size = new System.Drawing.Size(27, 23);
+            this.changePath.TabIndex = 1;
+            this.changePath.Text = "...";
+            this.changePath.UseVisualStyleBackColor = true;
+            this.changePath.Click += new System.EventHandler(this.Change_Click);
+            // 
+            // exportRangeGroupBox
+            // 
+            this.exportRangeGroupBox.Controls.Add(this.selectRange);
+            this.exportRangeGroupBox.Controls.Add(this.viewsSheetsOption);
+            this.exportRangeGroupBox.Controls.Add(this.visiblePortionOption);
+            this.exportRangeGroupBox.Controls.Add(this.currentWindowOption);
+            this.exportRangeGroupBox.Location = new System.Drawing.Point(12, 76);
+            this.exportRangeGroupBox.Name = "exportRangeGroupBox";
+            this.exportRangeGroupBox.Size = new System.Drawing.Size(489, 46);
+            this.exportRangeGroupBox.TabIndex = 1;
+            this.exportRangeGroupBox.TabStop = false;
+            this.exportRangeGroupBox.Text = "Export Range";
+            // 
+            // selectRange
+            // 
+            this.selectRange.Location = new System.Drawing.Point(443, 16);
+            this.selectRange.Name = "selectRange";
+            this.selectRange.Size = new System.Drawing.Size(27, 23);
+            this.selectRange.TabIndex = 9;
+            this.selectRange.Text = "...";
+            this.selectRange.UseVisualStyleBackColor = true;
+            this.selectRange.Click += new System.EventHandler(this.Select_Click);
+            // 
+            // viewsSheetsOption
+            // 
+            this.viewsSheetsOption.AutoSize = true;
+            this.viewsSheetsOption.Location = new System.Drawing.Point(307, 19);
+            this.viewsSheetsOption.Name = "viewsSheetsOption";
+            this.viewsSheetsOption.Size = new System.Drawing.Size(132, 17);
+            this.viewsSheetsOption.TabIndex = 8;
+            this.viewsSheetsOption.TabStop = true;
+            this.viewsSheetsOption.Text = "Selected views/sheets";
+            this.viewsSheetsOption.UseVisualStyleBackColor = true;
+            this.viewsSheetsOption.CheckedChanged += new System.EventHandler(this.ViewsSheets_CheckedChanged);
+            // 
+            // visiblePortionOption
+            // 
+            this.visiblePortionOption.AutoSize = true;
+            this.visiblePortionOption.Location = new System.Drawing.Point(124, 19);
+            this.visiblePortionOption.Name = "visiblePortionOption";
+            this.visiblePortionOption.Size = new System.Drawing.Size(181, 17);
+            this.visiblePortionOption.TabIndex = 7;
+            this.visiblePortionOption.TabStop = true;
+            this.visiblePortionOption.Text = "Visible portion of current window";
+            this.visiblePortionOption.UseVisualStyleBackColor = true;
+            this.visiblePortionOption.CheckedChanged += new System.EventHandler(this.VisiblePortion_CheckedChanged);
+            // 
+            // currentWindowOption
+            // 
+            this.currentWindowOption.AutoSize = true;
+            this.currentWindowOption.Location = new System.Drawing.Point(20, 19);
+            this.currentWindowOption.Name = "currentWindowOption";
+            this.currentWindowOption.Size = new System.Drawing.Size(101, 17);
+            this.currentWindowOption.TabIndex = 6;
+            this.currentWindowOption.TabStop = true;
+            this.currentWindowOption.Text = "Current window";
+            this.currentWindowOption.UseVisualStyleBackColor = true;
+            this.currentWindowOption.CheckedChanged += new System.EventHandler(this.CurrentWindow_CheckedChanged);
+            // 
+            // imageSizeGroupBox
+            // 
+            this.imageSizeGroupBox.Controls.Add(this.pixels);
+            this.imageSizeGroupBox.Controls.Add(this.pixelValue);
+            this.imageSizeGroupBox.Controls.Add(this.panel1);
+            this.imageSizeGroupBox.Controls.Add(this.actual);
+            this.imageSizeGroupBox.Controls.Add(this.zoomSize);
+            this.imageSizeGroupBox.Controls.Add(this.Direction);
+            this.imageSizeGroupBox.Controls.Add(this.zoomOption);
+            this.imageSizeGroupBox.Controls.Add(this.fitToOption);
+            this.imageSizeGroupBox.Location = new System.Drawing.Point(12, 128);
+            this.imageSizeGroupBox.Name = "imageSizeGroupBox";
+            this.imageSizeGroupBox.Size = new System.Drawing.Size(489, 77);
+            this.imageSizeGroupBox.TabIndex = 2;
+            this.imageSizeGroupBox.TabStop = false;
+            this.imageSizeGroupBox.Text = "Image size";
+            // 
+            // pixels
+            // 
+            this.pixels.AutoSize = true;
+            this.pixels.Location = new System.Drawing.Point(169, 20);
+            this.pixels.Name = "pixels";
+            this.pixels.Size = new System.Drawing.Size(34, 13);
+            this.pixels.TabIndex = 2;
+            this.pixels.Text = "pixels";
+            // 
+            // pixelValue
+            // 
+            this.pixelValue.Location = new System.Drawing.Point(84, 16);
+            this.pixelValue.Name = "pixelValue";
+            this.pixelValue.Size = new System.Drawing.Size(78, 21);
+            this.pixelValue.TabIndex = 8;
+            // 
+            // panel1
+            // 
+            this.panel1.Controls.Add(this.verticalOption);
+            this.panel1.Controls.Add(this.horizontalOption);
+            this.panel1.Location = new System.Drawing.Point(306, 16);
+            this.panel1.Name = "panel1";
+            this.panel1.Size = new System.Drawing.Size(162, 21);
+            this.panel1.TabIndex = 7;
+            // 
+            // verticalOption
+            // 
+            this.verticalOption.AutoSize = true;
+            this.verticalOption.Location = new System.Drawing.Point(3, 3);
+            this.verticalOption.Name = "verticalOption";
+            this.verticalOption.Size = new System.Drawing.Size(60, 17);
+            this.verticalOption.TabIndex = 0;
+            this.verticalOption.TabStop = true;
+            this.verticalOption.Text = "Vertical";
+            this.verticalOption.UseVisualStyleBackColor = true;
+            this.verticalOption.CheckedChanged += new System.EventHandler(this.Vertical_CheckedChanged);
+            // 
+            // horizontalOption
+            // 
+            this.horizontalOption.AutoSize = true;
+            this.horizontalOption.Location = new System.Drawing.Point(87, 3);
+            this.horizontalOption.Name = "horizontalOption";
+            this.horizontalOption.Size = new System.Drawing.Size(73, 17);
+            this.horizontalOption.TabIndex = 1;
+            this.horizontalOption.TabStop = true;
+            this.horizontalOption.Text = "Horizontal";
+            this.horizontalOption.UseVisualStyleBackColor = true;
+            this.horizontalOption.CheckedChanged += new System.EventHandler(this.Horizontal_CheckedChanged);
+            // 
+            // actual
+            // 
+            this.actual.AutoSize = true;
+            this.actual.Location = new System.Drawing.Point(169, 48);
+            this.actual.Name = "actual";
+            this.actual.Size = new System.Drawing.Size(84, 13);
+            this.actual.TabIndex = 6;
+            this.actual.Text = "% of actual size";
+            // 
+            // zoomSize
+            // 
+            this.zoomSize.Location = new System.Drawing.Point(84, 44);
+            this.zoomSize.Maximum = new decimal(new int[] {
+            32767,
+            0,
+            0,
+            0});
+            this.zoomSize.Minimum = new decimal(new int[] {
+            1,
+            0,
+            0,
+            0});
+            this.zoomSize.Name = "zoomSize";
+            this.zoomSize.Size = new System.Drawing.Size(78, 21);
+            this.zoomSize.TabIndex = 5;
+            this.zoomSize.Value = new decimal(new int[] {
+            1,
+            0,
+            0,
+            0});
+            // 
+            // Direction
+            // 
+            this.Direction.AutoSize = true;
+            this.Direction.Location = new System.Drawing.Point(240, 20);
+            this.Direction.Name = "Direction";
+            this.Direction.Size = new System.Drawing.Size(53, 13);
+            this.Direction.TabIndex = 2;
+            this.Direction.Text = "Direction:";
+            // 
+            // zoomOption
+            // 
+            this.zoomOption.AutoSize = true;
+            this.zoomOption.Location = new System.Drawing.Point(20, 46);
+            this.zoomOption.Name = "zoomOption";
+            this.zoomOption.Size = new System.Drawing.Size(64, 17);
+            this.zoomOption.TabIndex = 1;
+            this.zoomOption.TabStop = true;
+            this.zoomOption.Text = "Zoom to";
+            this.zoomOption.UseVisualStyleBackColor = true;
+            this.zoomOption.CheckedChanged += new System.EventHandler(this.Zoom_CheckedChanged);
+            // 
+            // fitToOption
+            // 
+            this.fitToOption.AutoSize = true;
+            this.fitToOption.Location = new System.Drawing.Point(20, 18);
+            this.fitToOption.Name = "fitToOption";
+            this.fitToOption.Size = new System.Drawing.Size(50, 17);
+            this.fitToOption.TabIndex = 0;
+            this.fitToOption.TabStop = true;
+            this.fitToOption.Text = "Fit to";
+            this.fitToOption.UseVisualStyleBackColor = true;
+            this.fitToOption.CheckedChanged += new System.EventHandler(this.FitTo_CheckedChanged);
+            // 
+            // formatGroupBox
+            // 
+            this.formatGroupBox.Controls.Add(this.RIQCom);
+            this.formatGroupBox.Controls.Add(this.noShadedCom);
+            this.formatGroupBox.Controls.Add(this.label1);
+            this.formatGroupBox.Controls.Add(this.Non);
+            this.formatGroupBox.Controls.Add(this.shadedCom);
+            this.formatGroupBox.Controls.Add(this.shaded);
+            this.formatGroupBox.Location = new System.Drawing.Point(12, 211);
+            this.formatGroupBox.Name = "formatGroupBox";
+            this.formatGroupBox.Size = new System.Drawing.Size(489, 70);
+            this.formatGroupBox.TabIndex = 4;
+            this.formatGroupBox.TabStop = false;
+            this.formatGroupBox.Text = "Format";
+            // 
+            // RIQCom
+            // 
+            this.RIQCom.FormattingEnabled = true;
+            this.RIQCom.Location = new System.Drawing.Point(347, 32);
+            this.RIQCom.Name = "RIQCom";
+            this.RIQCom.Size = new System.Drawing.Size(121, 21);
+            this.RIQCom.TabIndex = 10;
+            // 
+            // noShadedCom
+            // 
+            this.noShadedCom.FormattingEnabled = true;
+            this.noShadedCom.Location = new System.Drawing.Point(180, 32);
+            this.noShadedCom.Name = "noShadedCom";
+            this.noShadedCom.Size = new System.Drawing.Size(121, 21);
+            this.noShadedCom.TabIndex = 9;
+            // 
+            // label1
+            // 
+            this.label1.AutoSize = true;
+            this.label1.Location = new System.Drawing.Point(347, 16);
+            this.label1.Name = "label1";
+            this.label1.Size = new System.Drawing.Size(109, 13);
+            this.label1.TabIndex = 8;
+            this.label1.Text = "Raster Image Quality";
+            // 
+            // Non
+            // 
+            this.Non.AutoSize = true;
+            this.Non.Location = new System.Drawing.Point(180, 16);
+            this.Non.Name = "Non";
+            this.Non.Size = new System.Drawing.Size(98, 13);
+            this.Non.TabIndex = 7;
+            this.Non.Text = "Non shaded views:";
+            // 
+            // shadedCom
+            // 
+            this.shadedCom.FormattingEnabled = true;
+            this.shadedCom.Location = new System.Drawing.Point(13, 32);
+            this.shadedCom.Name = "shadedCom";
+            this.shadedCom.Size = new System.Drawing.Size(121, 21);
+            this.shadedCom.TabIndex = 6;
+            // 
+            // shaded
+            // 
+            this.shaded.AutoSize = true;
+            this.shaded.Location = new System.Drawing.Point(13, 16);
+            this.shaded.Name = "shaded";
+            this.shaded.Size = new System.Drawing.Size(77, 13);
+            this.shaded.TabIndex = 5;
+            this.shaded.Text = "Shaded views:";
+            // 
+            // okButton
+            // 
+            this.okButton.DialogResult = System.Windows.Forms.DialogResult.OK;
+            this.okButton.Location = new System.Drawing.Point(336, 307);
+            this.okButton.Name = "okButton";
+            this.okButton.Size = new System.Drawing.Size(75, 23);
+            this.okButton.TabIndex = 0;
+            this.okButton.Text = "OK";
+            this.okButton.UseVisualStyleBackColor = true;
+            this.okButton.Click += new System.EventHandler(this.OK_Click);
+            // 
+            // cannelButton
+            // 
+            this.cannelButton.DialogResult = System.Windows.Forms.DialogResult.Cancel;
+            this.cannelButton.Location = new System.Drawing.Point(426, 307);
+            this.cannelButton.Name = "cannelButton";
+            this.cannelButton.Size = new System.Drawing.Size(75, 23);
+            this.cannelButton.TabIndex = 5;
+            this.cannelButton.Text = "Cannel";
+            this.cannelButton.UseVisualStyleBackColor = true;
+            this.cannelButton.Click += new System.EventHandler(this.Cannel_Click);
+            // 
+            // ExportIMGOptionsForm
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(516, 341);
+            this.Controls.Add(this.outputGroupBox);
+            this.Controls.Add(this.cannelButton);
+            this.Controls.Add(this.okButton);
+            this.Controls.Add(this.formatGroupBox);
+            this.Controls.Add(this.imageSizeGroupBox);
+            this.Controls.Add(this.exportRangeGroupBox);
+            this.MaximizeBox = false;
+            this.MinimizeBox = false;
+            this.Name = "ExportIMGOptionsForm";
+            this.ShowIcon = false;
+            this.ShowInTaskbar = false;
+            this.Text = "Export Image";
+            this.outputGroupBox.ResumeLayout(false);
+            this.outputGroupBox.PerformLayout();
+            this.exportRangeGroupBox.ResumeLayout(false);
+            this.exportRangeGroupBox.PerformLayout();
+            this.imageSizeGroupBox.ResumeLayout(false);
+            this.imageSizeGroupBox.PerformLayout();
+            this.panel1.ResumeLayout(false);
+            this.panel1.PerformLayout();
+            ((System.ComponentModel.ISupportInitialize)(this.zoomSize)).EndInit();
+            this.formatGroupBox.ResumeLayout(false);
+            this.formatGroupBox.PerformLayout();
+            this.ResumeLayout(false);
+
+        }
+
+        #endregion
+
+        private System.Windows.Forms.GroupBox outputGroupBox;
+        private System.Windows.Forms.Button changePath;
+        private System.Windows.Forms.TextBox saveAs;
+        private System.Windows.Forms.Label name;
+        private System.Windows.Forms.GroupBox exportRangeGroupBox;
+        private System.Windows.Forms.GroupBox imageSizeGroupBox;
+        private System.Windows.Forms.GroupBox formatGroupBox;
+        private System.Windows.Forms.Button okButton;
+        private System.Windows.Forms.Button cannelButton;
+        private System.Windows.Forms.RadioButton viewsSheetsOption;
+        private System.Windows.Forms.RadioButton visiblePortionOption;
+        private System.Windows.Forms.RadioButton currentWindowOption;
+        private System.Windows.Forms.Button selectRange;
+        private System.Windows.Forms.RadioButton fitToOption;
+        private System.Windows.Forms.RadioButton horizontalOption;
+        private System.Windows.Forms.RadioButton verticalOption;
+        private System.Windows.Forms.Label Direction;
+        private System.Windows.Forms.RadioButton zoomOption;
+        private System.Windows.Forms.NumericUpDown zoomSize;
+        private System.Windows.Forms.Label actual;
+        private System.Windows.Forms.Label label1;
+        private System.Windows.Forms.Label Non;
+        private System.Windows.Forms.ComboBox shadedCom;
+        private System.Windows.Forms.Label shaded;
+        private System.Windows.Forms.ComboBox noShadedCom;
+        private System.Windows.Forms.ComboBox RIQCom;
+        private System.Windows.Forms.Panel panel1;
+        private System.Windows.Forms.TextBox pixelValue;
+        private System.Windows.Forms.Label pixels;
+
+    }
+}

SDK/Samples/ImportExport/CS/Export/ExportIMGOptionsForm.cs

@@ -0,0 +1,249 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Windows.Forms;
+
+using Autodesk.Revit.DB;
+using Autodesk.Revit.UI;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// Provide a dialog which provides the options of lower priority information for exporting image
+    /// </summary>
+    public partial class ExportIMGOptionsForm : System.Windows.Forms.Form
+    {
+
+        /// <summary>
+        /// Data class object of m_exportOptions
+        /// </summary>
+        private ImageExportOptions m_exportOptions;
+
+
+        /// <summary>
+        /// Data class object of ExportDataWithViews
+        /// </summary>
+        private ExportDataWithViews m_exportData;
+
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        /// <param name="exportData">Data class object</param>
+        public ExportIMGOptionsForm(ExportDataWithViews exportData)
+        {
+            m_exportOptions = new ImageExportOptions();
+            InitializeComponent();
+            this.m_exportData = exportData;
+            InitializeFormats();
+        }
+
+        private void InitializeFormats()
+        {
+            // Initialize
+            currentWindowOption.Checked = true;
+            selectRange.Enabled = false;
+            fitToOption.Checked = true;
+            zoomOption.Checked = false;
+            verticalOption.Enabled = false;
+            horizontalOption.Enabled = true;
+            RIQCom.Enabled = false;
+            pixelValue.Text = "512";
+            zoomSize.Enabled = false;
+            zoomSize.Value = 50;
+            saveAs.Text = m_exportData.ExportFolder + "\\" + m_exportData.ActiveViewName;
+
+
+            shadedCom.Items.Add("BMP");
+            shadedCom.Items.Add("JPEG(lossless)");
+            shadedCom.Items.Add("JPEG(medium)");
+            shadedCom.Items.Add("JPEG(smallest)");
+            shadedCom.Items.Add("PNG");
+            shadedCom.Items.Add("TARGA");
+            shadedCom.Items.Add("TIFF");
+            shadedCom.SelectedIndex = 2;
+
+            noShadedCom.Items.Add("BMP");
+            noShadedCom.Items.Add("JPEG(lossless)");
+            noShadedCom.Items.Add("JPEG(medium)");
+            noShadedCom.Items.Add("JPEG(smallest");
+            noShadedCom.Items.Add("PNG");
+            noShadedCom.Items.Add("TARGA");
+            noShadedCom.Items.Add("TIFF");
+            noShadedCom.SelectedIndex = 2;
+
+
+            RIQCom.Items.Add("72");
+            RIQCom.Items.Add("150");
+            RIQCom.Items.Add("300");
+            RIQCom.Items.Add("600");
+            RIQCom.SelectedIndex = 0;
+            RIQCom.Enabled = false;
+        }
+
+        private void FitTo_CheckedChanged(object sender, EventArgs e)
+        {
+            verticalOption.Enabled = true;
+            horizontalOption.Enabled = true;
+            RIQCom.Enabled = false;
+            zoomSize.Enabled = false;
+            m_exportOptions.ZoomType = ZoomFitType.FitToPage;
+            pixelValue.Enabled = true;
+        }
+
+        private void Zoom_CheckedChanged(object sender, EventArgs e)
+        {
+            verticalOption.Checked = false;
+            horizontalOption.Checked = false;
+            verticalOption.Enabled = false;
+            horizontalOption.Enabled = false;
+            RIQCom.Enabled = true;
+            zoomSize.Enabled = true;
+            m_exportOptions.ZoomType = ZoomFitType.Zoom;
+            pixelValue.Enabled = false;
+        }
+
+        private void Cannel_Click(object sender, EventArgs e)
+        {
+            this.Close();
+        }
+
+        private void Select_Click(object sender, EventArgs e)
+        {
+            using (SelectViewsForm selectViewsForm = new SelectViewsForm(m_exportData.SelectViewsData))
+            {
+                m_exportData.SelectViewsData.SelectedViews.Clear();
+                selectViewsForm.ShowDialog();
+            }
+        }
+
+        private void CurrentWindow_CheckedChanged(object sender, EventArgs e)
+        {
+            m_exportOptions.ExportRange = ExportRange.CurrentView;
+            selectRange.Enabled = false;
+        }
+
+        private void VisiblePortion_CheckedChanged(object sender, EventArgs e)
+        {
+            m_exportOptions.ExportRange = ExportRange.VisibleRegionOfCurrentView;
+            selectRange.Enabled = false;
+        }
+
+        private void ViewsSheets_CheckedChanged(object sender, EventArgs e)
+        {
+            m_exportOptions.ExportRange = ExportRange.SetOfViews;
+            selectRange.Enabled = true;
+        }
+
+        private void Change_Click(object sender, EventArgs e)
+        {
+            String fileName = String.Empty;
+            int filterIndex = -1;
+            DialogResult result = ShowSaveDialog(m_exportData, ref fileName, ref filterIndex);
+            if (result != DialogResult.Cancel)
+            {
+                saveAs.Text = fileName.Substring(0, fileName.LastIndexOf("."));
+
+            }
+        }
+
+        private DialogResult ShowSaveDialog(ExportData exportData, ref String returnFileName, ref int filterIndex)
+        {
+            using (SaveFileDialog saveDialog = new SaveFileDialog())
+            {
+                saveDialog.Title = exportData.Title;
+                saveDialog.InitialDirectory = exportData.ExportFolder;
+                saveDialog.FileName = exportData.ActiveViewName;
+                saveDialog.Filter = exportData.Filter;
+                saveDialog.FilterIndex = 1;
+                saveDialog.RestoreDirectory = true;
+
+                DialogResult result = saveDialog.ShowDialog();
+                if (result != DialogResult.Cancel)
+                {
+                    returnFileName = saveDialog.FileName;
+                    filterIndex = saveDialog.FilterIndex;
+                }
+
+                return result;
+            }
+        }
+
+        private void OK_Click(object sender, EventArgs e)
+        {
+            m_exportOptions.FilePath = saveAs.Text;
+            if (m_exportOptions.ZoomType == ZoomFitType.FitToPage)
+            {
+                m_exportOptions.PixelSize = int.Parse(pixelValue.Text);
+            }
+            else if (m_exportOptions.ZoomType == ZoomFitType.Zoom)
+            {
+                m_exportOptions.Zoom = (int)zoomSize.Value;
+                m_exportOptions.ImageResolution = (ImageResolution)RIQCom.SelectedIndex;
+            }
+
+            m_exportOptions.ShadowViewsFileType = (ImageFileType)shadedCom.SelectedIndex;
+            m_exportOptions.HLRandWFViewsFileType = (ImageFileType)noShadedCom.SelectedIndex;
+
+
+            if (m_exportOptions.ExportRange == ExportRange.SetOfViews)
+            {
+                ViewSet views = m_exportData.SelectViewsData.SelectedViews;
+                List<ElementId> viewIds = new List<ElementId>();
+                foreach (Autodesk.Revit.DB.View view in views)
+                {
+                    viewIds.Add(view.Id);
+                }
+                m_exportOptions.SetViewsAndSheets(viewIds);
+            }
+
+            try
+            {
+                m_exportData.ActiveDocument.ExportImage(m_exportOptions);
+            }
+            catch (Exception ex)
+            {
+                String errorMessage = "Failed to export img" + ex.ToString();
+                TaskDialog.Show("Error", errorMessage, TaskDialogCommonButtons.Ok);
+            }
+            this.Close();
+        }
+
+        private void Vertical_CheckedChanged(object sender, EventArgs e)
+        {
+            m_exportOptions.FitDirection = FitDirectionType.Vertical;
+        }
+
+        private void Horizontal_CheckedChanged(object sender, EventArgs e)
+        {
+            m_exportOptions.FitDirection = FitDirectionType.Horizontal;
+        }
+
+
+    }
+}

SDK/Samples/ImportExport/CS/Export/ExportIMGOptionsForm.resx

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

SDK/Samples/ImportExport/CS/Export/ExportPDFData.cs

@@ -0,0 +1,102 @@
+//
+// (C) Copyright 2003-2020 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Linq;
+using System.Collections.Generic;
+using Autodesk.Revit.DB;
+using Autodesk.Revit.UI;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+   /// <summary>
+   /// Data class which stores the main information for exporting pdf format
+   /// </summary>
+   public class ExportPDFData : ExportDataWithViews
+   {
+      #region Class Member Variables
+      private bool m_combine;
+      #endregion
+
+      #region Class Properties
+      public bool Combine
+      {
+         get
+         {
+            return m_combine;
+         }
+         set
+         {
+            m_combine = value;
+         }
+      }
+
+      #endregion
+
+      /// <summary>
+      /// Constructor
+      /// </summary>
+      /// <param name="commandData">Revit command data</param>
+      /// <param name="exportFormat">Format to export</param>
+      public ExportPDFData(ExternalCommandData commandData, ExportFormat exportFormat)
+          : base(commandData, exportFormat)
+      {
+         m_filter = "PDF Files |*.pdf";
+         m_title = "Export PDF";
+
+         m_combine = true;
+      }
+
+      /// <summary>
+      /// Export PDF format
+      /// </summary>
+      /// <returns></returns>
+      public override bool Export()
+      {
+         base.Export();
+
+         bool exported = false;
+         // Parameter: The list of view/sheet id to export
+         IList<ElementId> views = new List<ElementId>();
+         if (m_currentViewOnly)
+         {
+            views.Add(m_activeDoc.ActiveView.Id);
+         }
+         else
+         {
+            ViewSet viewSet = m_selectViewsData.SelectedViews;
+            foreach (View v in viewSet)
+            {
+               views.Add(v.Id);
+            }
+         }
+
+         // Parameter: The exporting options, including paper size, orientation, file name or naming rule and etc.
+         PDFExportOptions options = new PDFExportOptions();
+         options.FileName = m_exportFileName;
+         options.Combine = m_combine;  // If not combined, PDFs will be exported with default naming rule "Type-ViewName"
+         exported = m_activeDoc.Export(m_exportFolder, views, options);
+
+         return exported;
+      }
+   }
+}

SDK/Samples/ImportExport/CS/Export/ExportPDFOptionsForm.Designer.cs

@@ -0,0 +1,99 @@
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+   partial class ExportPDFOptionsForm
+   {
+      /// <summary>
+      /// Required designer variable.
+      /// </summary>
+      private System.ComponentModel.IContainer components = null;
+
+      /// <summary>
+      /// Clean up any resources being used.
+      /// </summary>
+      /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+      protected override void Dispose(bool disposing)
+      {
+         if (disposing && (components != null))
+         {
+            components.Dispose();
+         }
+         base.Dispose(disposing);
+      }
+
+      #region Windows Form Designer generated code
+
+      /// <summary>
+      /// Required method for Designer support - do not modify
+      /// the contents of this method with the code editor.
+      /// </summary>
+      private void InitializeComponent()
+      {
+         this.buttonOK = new System.Windows.Forms.Button();
+         this.buttonCancel = new System.Windows.Forms.Button();
+         this.checkBoxCombineViews = new System.Windows.Forms.CheckBox();
+         this.SuspendLayout();
+         // 
+         // buttonOK
+         // 
+         this.buttonOK.DialogResult = System.Windows.Forms.DialogResult.OK;
+         this.buttonOK.Location = new System.Drawing.Point(120, 113);
+         this.buttonOK.Margin = new System.Windows.Forms.Padding(4);
+         this.buttonOK.Name = "buttonOK";
+         this.buttonOK.Size = new System.Drawing.Size(121, 28);
+         this.buttonOK.TabIndex = 1;
+         this.buttonOK.Text = "&OK";
+         this.buttonOK.UseVisualStyleBackColor = true;
+         this.buttonOK.Click += new System.EventHandler(this.buttonOK_Click);
+         // 
+         // buttonCancel
+         // 
+         this.buttonCancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
+         this.buttonCancel.Location = new System.Drawing.Point(253, 113);
+         this.buttonCancel.Margin = new System.Windows.Forms.Padding(4);
+         this.buttonCancel.Name = "buttonCancel";
+         this.buttonCancel.Size = new System.Drawing.Size(135, 28);
+         this.buttonCancel.TabIndex = 3;
+         this.buttonCancel.Text = "&Cancel";
+         this.buttonCancel.UseVisualStyleBackColor = true;
+         // 
+         // checkBoxCombineViews
+         // 
+         this.checkBoxCombineViews.AutoSize = true;
+         this.checkBoxCombineViews.Location = new System.Drawing.Point(13, 34);
+         this.checkBoxCombineViews.Margin = new System.Windows.Forms.Padding(4);
+         this.checkBoxCombineViews.Name = "checkBoxCombineViews";
+         this.checkBoxCombineViews.Size = new System.Drawing.Size(375, 21);
+         this.checkBoxCombineViews.TabIndex = 5;
+         this.checkBoxCombineViews.Text = "Combine selected views and sheets into single PDF file";
+         this.checkBoxCombineViews.UseVisualStyleBackColor = true;
+         // 
+         // ExportPDFOptionsForm
+         // 
+         this.AcceptButton = this.buttonOK;
+         this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 16F);
+         this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+         this.CancelButton = this.buttonCancel;
+         this.ClientSize = new System.Drawing.Size(411, 163);
+         this.Controls.Add(this.checkBoxCombineViews);
+         this.Controls.Add(this.buttonCancel);
+         this.Controls.Add(this.buttonOK);
+         this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
+         this.MaximizeBox = false;
+         this.MinimizeBox = false;
+         this.Name = "ExportPDFOptionsForm";
+         this.ShowIcon = false;
+         this.ShowInTaskbar = false;
+         this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
+         this.Text = "ExportPDFOptionsForm";
+         this.ResumeLayout(false);
+         this.PerformLayout();
+
+      }
+
+      #endregion
+
+      private System.Windows.Forms.Button buttonOK;
+      private System.Windows.Forms.Button buttonCancel;
+      private System.Windows.Forms.CheckBox checkBoxCombineViews;
+   }
+}

SDK/Samples/ImportExport/CS/Export/ExportPDFOptionsForm.cs

@@ -0,0 +1,65 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+   /// <summary>
+   /// Data class which stores information of lower priority for exporting PDF format.
+   /// </summary>
+   public partial class ExportPDFOptionsForm : Form
+   {
+      /// <summary>
+      /// ExportPDFData object
+      /// </summary>
+      private ExportPDFData m_data;
+
+      public ExportPDFOptionsForm(ExportPDFData data)
+      {
+         m_data = data;
+         InitializeComponent();
+         Initialize();
+      }
+
+      /// <summary>
+      /// Initialize controls
+      /// </summary>
+      private void Initialize()
+      {
+         checkBoxCombineViews.Checked = m_data.Combine;
+      }
+
+      private void buttonOK_Click(object sender, EventArgs e)
+      {
+         m_data.Combine = checkBoxCombineViews.Checked;
+      }
+   }
+}

SDK/Samples/ImportExport/CS/Export/ExportPDFOptionsForm.resx

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

SDK/Samples/ImportExport/CS/Export/ExportSATData.cs

@@ -0,0 +1,170 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Text;
+using System.Reflection;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+
+using Autodesk.Revit;
+using Autodesk.Revit.DB;
+using Autodesk.Revit.UI;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+   /// <summary>
+   /// Data class which stores the main information for exporting dxf format
+   /// </summary>
+   public class ExportSATData : ExportDataWithViews
+   {
+      #region Class Member Variables
+      /// <summary>
+      /// String list of AutoCAD versions
+      /// </summary>
+      private List<String> m_fileVersion;
+
+      /// <summary>
+      /// List of Autodesk.Revit.DB.ACADVersion defined in Revit
+      /// </summary>
+      private List<Autodesk.Revit.DB.ACADVersion> m_enumFileVersion;
+
+      /// <summary>
+      /// File version option to export
+      /// </summary>
+      private Autodesk.Revit.DB.ACADVersion m_exportFileVersion;
+      #endregion
+
+      #region Class Properties
+
+      /// <summary>
+      /// String collection of AutoCAD versions
+      /// </summary>
+      public ReadOnlyCollection<String> FileVersion
+      {
+         get
+         {
+            return new ReadOnlyCollection<String>(m_fileVersion);
+         }
+      }
+
+      /// <summary>
+      /// Collection of Autodesk.Revit.DB.ACADVersion defined in Revit
+      /// </summary>
+      public ReadOnlyCollection<Autodesk.Revit.DB.ACADVersion> EnumFileVersion
+      {
+         get
+         {
+            return new ReadOnlyCollection<Autodesk.Revit.DB.ACADVersion>(m_enumFileVersion);
+         }
+      }
+
+      /// <summary>
+      /// File version option to export
+      /// </summary>
+      public Autodesk.Revit.DB.ACADVersion ExportFileVersion
+      {
+         get
+         {
+            return m_exportFileVersion;
+         }
+         set
+         {
+            m_exportFileVersion = value;
+         }
+      }
+      #endregion
+
+      #region Class Member Methods
+      /// <summary>
+      /// Constructor
+      /// </summary>
+      /// <param name="commandData">Revit command data</param>
+      /// <param name="exportFormat">Format to export</param>
+      public ExportSATData(ExternalCommandData commandData, ExportFormat exportFormat)
+         : base(commandData, exportFormat)
+      {
+         Initialize();
+      }
+
+      /// <summary>
+      /// Initialize the variables
+      /// </summary>
+      private void Initialize()
+      {
+         //AutoCAD versions
+         m_fileVersion = new List<String>();
+         m_enumFileVersion = new List<Autodesk.Revit.DB.ACADVersion>();
+         m_fileVersion.Add("AutoCAD 2013 DXF Files (*.sat)");
+         m_enumFileVersion.Add(Autodesk.Revit.DB.ACADVersion.R2013);
+         m_fileVersion.Add("AutoCAD 2010 DXF Files (*.sat)");
+         m_enumFileVersion.Add(Autodesk.Revit.DB.ACADVersion.R2010);
+         m_fileVersion.Add("AutoCAD 2007 DXF Files (*.sat)");
+         m_enumFileVersion.Add(Autodesk.Revit.DB.ACADVersion.R2007);
+
+         StringBuilder tmp = new StringBuilder();
+         foreach (String version in m_fileVersion)
+         {
+            tmp.Append(version + "|*.sat|");
+         }
+         m_filter = tmp.ToString().TrimEnd('|');
+         m_title = "Export SAT";
+      }
+
+      /// <summary>
+      /// Collect the parameters and export
+      /// </summary>
+      /// <returns></returns>
+      public override bool Export()
+      {
+         base.Export();
+
+         bool exported = false;
+         
+         //parameter : ViewSet views
+         ViewSet views = new ViewSet();
+         if (m_currentViewOnly)
+         {
+            views.Insert(m_activeDoc.ActiveView);
+         }
+         else
+         {
+            views = m_selectViewsData.SelectedViews;
+         }
+
+         ICollection<ElementId> viewIds = new List<ElementId>();
+         foreach (View view in views)
+         {
+            viewIds.Add(view.Id);
+         }
+
+         //parameter : DXFExportOptions dxfExportOptions
+         SATExportOptions satExportOptions = new SATExportOptions();
+
+         //Export
+         exported = m_activeDoc.Export(m_exportFolder, m_exportFileName, viewIds, satExportOptions);
+         
+         return exported;
+      }
+      #endregion
+   }
+}

SDK/Samples/ImportExport/CS/Export/ExportWithViewsForm.Designer.cs

@@ -0,0 +1,213 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// It contains a dialog which provides the options of common information for export
+    /// </summary>
+    partial class ExportWithViewsForm
+    {
+        /// <summary>
+        /// Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        /// Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Windows Form Designer generated code
+
+        /// <summary>
+        /// Required method for Designer support - do not modify
+        /// the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            this.textBoxSaveAs = new System.Windows.Forms.TextBox();
+            this.labelSaveAs = new System.Windows.Forms.Label();
+            this.buttonSave = new System.Windows.Forms.Button();
+            this.buttonCancel = new System.Windows.Forms.Button();
+            this.buttonOptions = new System.Windows.Forms.Button();
+            this.buttonBrowser = new System.Windows.Forms.Button();
+            this.groupBoxRange = new System.Windows.Forms.GroupBox();
+            this.buttonSelectViews = new System.Windows.Forms.Button();
+            this.radioButtonSelectView = new System.Windows.Forms.RadioButton();
+            this.radioButtonCurrentView = new System.Windows.Forms.RadioButton();
+            this.groupBoxRange.SuspendLayout();
+            this.SuspendLayout();
+            // 
+            // textBoxSaveAs
+            // 
+            this.textBoxSaveAs.Location = new System.Drawing.Point(67, 19);
+            this.textBoxSaveAs.Name = "textBoxSaveAs";
+            this.textBoxSaveAs.Size = new System.Drawing.Size(308, 21);
+            this.textBoxSaveAs.TabIndex = 1;
+            // 
+            // labelSaveAs
+            // 
+            this.labelSaveAs.AutoSize = true;
+            this.labelSaveAs.Location = new System.Drawing.Point(14, 23);
+            this.labelSaveAs.Name = "labelSaveAs";
+            this.labelSaveAs.Size = new System.Drawing.Size(50, 13);
+            this.labelSaveAs.TabIndex = 1;
+            this.labelSaveAs.Text = "Save As:";
+            // 
+            // buttonSave
+            // 
+            this.buttonSave.Location = new System.Drawing.Point(235, 141);
+            this.buttonSave.Name = "buttonSave";
+            this.buttonSave.Size = new System.Drawing.Size(75, 21);
+            this.buttonSave.TabIndex = 0;
+            this.buttonSave.Text = "&Save";
+            this.buttonSave.UseVisualStyleBackColor = true;
+            this.buttonSave.Click += new System.EventHandler(this.buttonSave_Click);
+            // 
+            // buttonCancel
+            // 
+            this.buttonCancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
+            this.buttonCancel.Location = new System.Drawing.Point(320, 141);
+            this.buttonCancel.Name = "buttonCancel";
+            this.buttonCancel.Size = new System.Drawing.Size(75, 21);
+            this.buttonCancel.TabIndex = 6;
+            this.buttonCancel.Text = "&Cancel";
+            this.buttonCancel.UseVisualStyleBackColor = true;
+            // 
+            // buttonOptions
+            // 
+            this.buttonOptions.Location = new System.Drawing.Point(150, 141);
+            this.buttonOptions.Name = "buttonOptions";
+            this.buttonOptions.Size = new System.Drawing.Size(75, 21);
+            this.buttonOptions.TabIndex = 5;
+            this.buttonOptions.Text = "&Options...";
+            this.buttonOptions.UseVisualStyleBackColor = true;
+            this.buttonOptions.Click += new System.EventHandler(this.buttonOptions_Click);
+            // 
+            // buttonBrowser
+            // 
+            this.buttonBrowser.Location = new System.Drawing.Point(375, 19);
+            this.buttonBrowser.Name = "buttonBrowser";
+            this.buttonBrowser.Size = new System.Drawing.Size(24, 20);
+            this.buttonBrowser.TabIndex = 2;
+            this.buttonBrowser.Text = "...";
+            this.buttonBrowser.UseVisualStyleBackColor = true;
+            this.buttonBrowser.Click += new System.EventHandler(this.buttonBrowser_Click);
+            // 
+            // groupBoxRange
+            // 
+            this.groupBoxRange.Controls.Add(this.buttonSelectViews);
+            this.groupBoxRange.Controls.Add(this.radioButtonSelectView);
+            this.groupBoxRange.Controls.Add(this.radioButtonCurrentView);
+            this.groupBoxRange.Location = new System.Drawing.Point(17, 46);
+            this.groupBoxRange.Name = "groupBoxRange";
+            this.groupBoxRange.Size = new System.Drawing.Size(378, 73);
+            this.groupBoxRange.TabIndex = 4;
+            this.groupBoxRange.TabStop = false;
+            this.groupBoxRange.Text = "Range";
+            // 
+            // buttonSelectViews
+            // 
+            this.buttonSelectViews.Enabled = false;
+            this.buttonSelectViews.Location = new System.Drawing.Point(145, 42);
+            this.buttonSelectViews.Name = "buttonSelectViews";
+            this.buttonSelectViews.Size = new System.Drawing.Size(27, 21);
+            this.buttonSelectViews.TabIndex = 2;
+            this.buttonSelectViews.Text = "...";
+            this.buttonSelectViews.UseVisualStyleBackColor = true;
+            this.buttonSelectViews.Click += new System.EventHandler(this.buttonSelectViews_Click);
+            // 
+            // radioButtonSelectView
+            // 
+            this.radioButtonSelectView.AutoSize = true;
+            this.radioButtonSelectView.Location = new System.Drawing.Point(9, 44);
+            this.radioButtonSelectView.Name = "radioButtonSelectView";
+            this.radioButtonSelectView.Size = new System.Drawing.Size(132, 17);
+            this.radioButtonSelectView.TabIndex = 1;
+            this.radioButtonSelectView.Text = "Selected views/sheets";
+            this.radioButtonSelectView.UseVisualStyleBackColor = true;
+            this.radioButtonSelectView.CheckedChanged += new System.EventHandler(this.radioButtonSelectView_CheckedChanged);
+            // 
+            // radioButtonCurrentView
+            // 
+            this.radioButtonCurrentView.AutoSize = true;
+            this.radioButtonCurrentView.Checked = true;
+            this.radioButtonCurrentView.Location = new System.Drawing.Point(9, 20);
+            this.radioButtonCurrentView.Name = "radioButtonCurrentView";
+            this.radioButtonCurrentView.Size = new System.Drawing.Size(87, 17);
+            this.radioButtonCurrentView.TabIndex = 0;
+            this.radioButtonCurrentView.TabStop = true;
+            this.radioButtonCurrentView.Text = "Current view";
+            this.radioButtonCurrentView.UseVisualStyleBackColor = true;
+            // 
+            // ExportWithViewsForm
+            // 
+            this.AcceptButton = this.buttonSave;
+            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.CancelButton = this.buttonCancel;
+            this.ClientSize = new System.Drawing.Size(411, 169);
+            this.Controls.Add(this.groupBoxRange);
+            this.Controls.Add(this.buttonOptions);
+            this.Controls.Add(this.buttonCancel);
+            this.Controls.Add(this.buttonBrowser);
+            this.Controls.Add(this.buttonSave);
+            this.Controls.Add(this.labelSaveAs);
+            this.Controls.Add(this.textBoxSaveAs);
+            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
+            this.MaximizeBox = false;
+            this.MinimizeBox = false;
+            this.Name = "ExportWithViewsForm";
+            this.ShowIcon = false;
+            this.ShowInTaskbar = false;
+            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
+            this.Text = "Export";
+            this.groupBoxRange.ResumeLayout(false);
+            this.groupBoxRange.PerformLayout();
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+        }
+
+        #endregion
+
+        private System.Windows.Forms.TextBox textBoxSaveAs;
+        private System.Windows.Forms.Label labelSaveAs;
+        private System.Windows.Forms.Button buttonSave;
+        private System.Windows.Forms.Button buttonCancel;
+        private System.Windows.Forms.Button buttonOptions;
+        private System.Windows.Forms.Button buttonBrowser;
+        private System.Windows.Forms.GroupBox groupBoxRange;
+        private System.Windows.Forms.Button buttonSelectViews;
+        private System.Windows.Forms.RadioButton radioButtonSelectView;
+        private System.Windows.Forms.RadioButton radioButtonCurrentView;
+    }
+}

SDK/Samples/ImportExport/CS/Export/ExportWithViewsForm.cs

@@ -0,0 +1,304 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Text;
+using System.Windows.Forms;
+using System.IO;
+
+using Autodesk.Revit.UI;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// It contains a dialog which provides the options of common information for export
+    /// </summary>
+    public partial class ExportWithViewsForm : System.Windows.Forms.Form
+    {
+        // Data class object of ExportDataWithViews
+        private ExportDataWithViews m_exportData;
+
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        /// <param name="data"></param>
+        public ExportWithViewsForm(ExportDataWithViews data)
+        {
+            m_exportData = data;
+            InitializeComponent();
+            InitializeControls();
+        }
+
+        /// <summary>
+        /// Initialize values and status of controls
+        /// </summary>
+        private void InitializeControls()
+        {
+            textBoxSaveAs.Text = m_exportData.ExportFolder + "\\" + m_exportData.ExportFileName;
+
+            radioButtonCurrentView.Checked = true;
+
+            // Initialize the title
+            this.Text = m_exportData.Title;
+            if (m_exportData.ExportFormat == ExportFormat.SAT)
+            {
+                buttonOptions.Visible = false;
+            }
+            else if (m_exportData.ExportFormat == ExportFormat.Image)
+            {
+                this.Hide();
+                ExportIMGData exportIMGData = m_exportData as ExportIMGData;
+                using (ExportIMGOptionsForm exportOptionsForm = new ExportIMGOptionsForm(m_exportData))
+                {
+                    exportOptionsForm.ShowDialog();
+                }
+
+            }
+        }
+
+        /// <summary>
+        /// Provide the export option dialog
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        private void buttonOptions_Click(object sender, EventArgs e)
+        {
+            // Export dwg
+            if (m_exportData.ExportFormat == ExportFormat.DWG)
+            {
+                bool contain3DView = false;
+
+                if (radioButtonCurrentView.Checked)
+                {
+                    if (m_exportData.Is3DView)
+                    {
+                        contain3DView = true;
+                    }
+                }
+                else
+                {
+                    if (m_exportData.SelectViewsData.Contain3DView)
+                    {
+                        contain3DView = true;
+                    }
+                }
+
+                ExportDWGData exportDWGData = m_exportData as ExportDWGData;
+                using (ExportBaseOptionsForm exportOptionsForm = new ExportBaseOptionsForm(exportDWGData.ExportOptionsData,
+                    contain3DView, "DWG"))
+                {
+                    exportOptionsForm.ShowDialog();
+                }
+            }
+            //Export dxf
+            else if (m_exportData.ExportFormat == ExportFormat.DXF)
+            {
+                bool contain3DView = false;
+
+                if (radioButtonCurrentView.Checked)
+                {
+                    if (m_exportData.Is3DView)
+                    {
+                        contain3DView = true;
+                    }
+                }
+                else
+                {
+                    if (m_exportData.SelectViewsData.Contain3DView)
+                    {
+                        contain3DView = true;
+                    }
+                }
+
+                ExportDXFData exportDXFData = m_exportData as ExportDXFData;
+
+                using (ExportBaseOptionsForm exportOptionsForm = new ExportBaseOptionsForm(exportDXFData.ExportOptionsData,
+                    contain3DView, "DXF"))
+                {
+                    exportOptionsForm.ShowDialog();
+                }
+
+            }
+            // Export dgn
+            else if (m_exportData.ExportFormat == ExportFormat.DGN)
+            {
+                ExportDGNData exportDGNData = m_exportData as ExportDGNData;
+                using (ExportDGNOptionsForm exportOptionsForm = new ExportDGNOptionsForm(exportDGNData))
+                {
+                    exportOptionsForm.ShowDialog();
+                }
+            }
+            // Export PDF
+            else if (m_exportData.ExportFormat == ExportFormat.PDF)
+            {
+               ExportPDFData exportPDFData = m_exportData as ExportPDFData;
+               using (ExportPDFOptionsForm exportOptionsForm = new ExportPDFOptionsForm(exportPDFData))
+               {
+                  exportOptionsForm.ShowDialog();
+               }
+            }
+
+            // Export DWF
+            else
+            {
+                ExportDWFData exportDWFData = m_exportData as ExportDWFData;
+                using (ExportDWFOptionForm exportOptionsForm = new ExportDWFOptionForm(exportDWFData))
+                {
+                    exportOptionsForm.ShowDialog();
+                }
+            }
+        }
+
+        /// <summary>
+        /// Provide the views selecting dialog
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        private void buttonSelectViews_Click(object sender, EventArgs e)
+        {
+            using (SelectViewsForm selectViewsForm = new SelectViewsForm(m_exportData.SelectViewsData))
+            {
+                m_exportData.SelectViewsData.SelectedViews.Clear();
+                selectViewsForm.ShowDialog();
+                if (m_exportData.SelectViewsData.SelectedViews.Size == 0)
+                {
+                    radioButtonCurrentView.Checked = true;
+                }
+                else
+                {
+                    radioButtonCurrentView.Checked = false;
+                }
+            }
+        }
+
+        /// <summary>
+        /// Specify a file to export into
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        private void buttonBrowser_Click(object sender, EventArgs e)
+        {
+            String fileName = String.Empty;
+            int filterIndex = -1;
+
+            DialogResult result = MainData.ShowSaveDialog(m_exportData, ref fileName, ref filterIndex);
+            if (result != DialogResult.Cancel)
+            {
+                textBoxSaveAs.Text = fileName;
+                if (m_exportData.ExportFormat == ExportFormat.DWG)
+                {
+                    ExportDWGData exportDWGData = m_exportData as ExportDWGData;
+                    exportDWGData.ExportFileVersion = exportDWGData.EnumFileVersion[filterIndex - 1];
+                }
+                else if (m_exportData.ExportFormat == ExportFormat.DXF)
+                {
+                    ExportDXFData exportDXFData = m_exportData as ExportDXFData;
+                    exportDXFData.ExportFileVersion = exportDXFData.EnumFileVersion[filterIndex - 1];
+
+                }
+            }
+        }
+
+        /// <summary>
+        /// Change the status of buttonSelectViews according to the selection
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        private void radioButtonSelectView_CheckedChanged(object sender, EventArgs e)
+        {
+            buttonSelectViews.Enabled = radioButtonSelectView.Checked;
+        }
+
+        /// <summary>
+        /// Transfer information back to ExportData class and execute EXPORT operation
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        private void buttonSave_Click(object sender, EventArgs e)
+        {
+            if (ValidateExportFolder())
+            {
+                m_exportData.CurrentViewOnly = !radioButtonSelectView.Checked;
+
+                try
+                {
+                    bool exported = m_exportData.Export();
+                    if (!exported)
+                    {
+                        TaskDialog.Show("Export", "This project cannot be exported to " + m_exportData.ExportFileName +
+                        " in current settings.", TaskDialogCommonButtons.Ok);
+                    }
+                }
+                catch (Exception ex)
+                {
+                    TaskDialog.Show("Export Failed", ex.ToString(), TaskDialogCommonButtons.Ok);
+                }
+
+                this.DialogResult = DialogResult.OK;
+                this.Close();
+            }
+        }
+
+        /// <summary>
+        /// Check whether the folder specified is valid
+        /// </summary>
+        /// <returns></returns>
+        private Boolean ValidateExportFolder()
+        {
+            String fileNameFull = textBoxSaveAs.Text;
+            //If the textBoxSaveAs is empty
+            if (String.IsNullOrEmpty(fileNameFull))
+            {
+                TaskDialog.Show("Information", "Please specify the folder and file name!", TaskDialogCommonButtons.Ok);
+                textBoxSaveAs.Focus();
+                return false;
+            }
+
+            //If has file name
+            if (!fileNameFull.Contains("\\"))
+            {
+                TaskDialog.Show("Information", "Please specify file name!", TaskDialogCommonButtons.Ok);
+                textBoxSaveAs.Focus();
+                return false;
+            }
+
+            //Whether the folder exists
+            String folder = Path.GetDirectoryName(fileNameFull);
+            if (!Directory.Exists(folder))
+            {
+                TaskDialog.Show("Information", "The specified folder does not exist!", TaskDialogCommonButtons.Ok);
+                textBoxSaveAs.Focus();
+                return false;
+            }
+
+            m_exportData.ExportFileName = Path.GetFileNameWithoutExtension(fileNameFull);
+            m_exportData.ExportFolder = folder;
+
+            return true;
+        }
+
+    }
+}

SDK/Samples/ImportExport/CS/Export/ExportWithViewsForm.resx

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

SDK/Samples/ImportExport/CS/Export/SelectViewsData.cs

@@ -0,0 +1,172 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Text;
+
+using Autodesk.Revit;
+using Autodesk.Revit.DB;
+using Autodesk.Revit.UI;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// Data class which stores views information for export
+    /// </summary>
+    public class SelectViewsData
+    {
+        #region Class Member Variables
+        /// <summary>
+        /// Revit command data
+        /// </summary>
+        private ExternalCommandData m_commandData;
+
+        /// <summary>
+        /// All printable views(except sheets)
+        /// </summary>
+        private ViewSet m_printableViews;
+
+        /// <summary>
+        /// All printable sheets
+        /// </summary>
+        private ViewSet m_printableSheets;
+
+        /// <summary>
+        /// All selected views in UI
+        /// </summary>
+        private ViewSet m_selectedViews;
+
+        /// <summary>
+        /// Whether contain 3D view in selected views
+        /// </summary>
+        private bool m_contain3DView;
+        #endregion
+
+        #region Class Properties
+        /// <summary>
+        /// All printable views(except sheets)
+        /// </summary>
+        public ViewSet PrintableViews
+        {
+            get 
+            { 
+                return m_printableViews; 
+            }
+            set 
+            { 
+                m_printableViews = value; 
+            }
+        }
+
+        /// <summary>
+        /// All printable sheets
+        /// </summary>
+        public ViewSet PrintableSheets
+        {
+            get 
+            { 
+                return m_printableSheets; 
+            }
+            set 
+            { 
+                m_printableSheets = value;
+            }
+        }      
+
+        /// <summary>
+        /// All selected views in UI
+        /// </summary>
+        public ViewSet SelectedViews
+        {
+            get 
+            {
+                return m_selectedViews;
+            }
+            set 
+            { 
+                m_selectedViews = value;
+            }
+        }
+
+        /// <summary>
+        /// Whether contain 3D view in selected views
+        /// </summary>
+        public bool Contain3DView
+        {
+            get 
+            { 
+                return m_contain3DView; 
+            }
+            set 
+            { 
+                m_contain3DView = value; 
+            }
+        }
+        #endregion
+
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        /// <param name="commandData"></param>
+        public SelectViewsData(ExternalCommandData commandData)
+        {
+            m_commandData = commandData;
+            m_printableViews = new ViewSet();
+            m_printableSheets = new ViewSet();
+            m_selectedViews = new ViewSet();
+
+            GetAllPrintableViews();
+        }
+
+        /// <summary>
+        /// Get all printable views and sheets
+        /// </summary>
+        private void GetAllPrintableViews()
+        {
+            FilteredElementCollector collector = new FilteredElementCollector(m_commandData.Application.ActiveUIDocument.Document);
+            FilteredElementIterator itor = collector.OfClass(typeof(View)).GetElementIterator();
+            itor.Reset();
+            m_printableViews.Clear();
+            m_printableSheets.Clear();
+
+            while (itor.MoveNext())
+            {
+                View view = itor.Current as View;
+                // skip view templates because they're invisible in project browser, invalid for print
+                if (null == view || view.IsTemplate || !view.CanBePrinted)
+                {
+                    continue;
+                }
+                else if(view.ViewType == Autodesk.Revit.DB.ViewType.DrawingSheet)
+                {
+                    m_printableSheets.Insert(view);
+                }
+                else
+                {
+                    m_printableViews.Insert(view);
+                }
+            }
+        }
+    }
+}

SDK/Samples/ImportExport/CS/Export/SelectViewsForm.Designer.cs

@@ -0,0 +1,192 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// Provide a dialog which lets users choose views to export.
+    /// </summary>
+    partial class SelectViewsForm
+    {
+        /// <summary>
+        /// Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        /// Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Windows Form Designer generated code
+
+        /// <summary>
+        /// Required method for Designer support - do not modify
+        /// the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            this.groupBoxShow = new System.Windows.Forms.GroupBox();
+            this.checkBoxViews = new System.Windows.Forms.CheckBox();
+            this.checkBoxSheets = new System.Windows.Forms.CheckBox();
+            this.buttonCheckAll = new System.Windows.Forms.Button();
+            this.buttonCheckNone = new System.Windows.Forms.Button();
+            this.buttonOK = new System.Windows.Forms.Button();
+            this.buttonCancel = new System.Windows.Forms.Button();
+            this.checkedListBoxViews = new System.Windows.Forms.CheckedListBox();
+            this.groupBoxShow.SuspendLayout();
+            this.SuspendLayout();
+            // 
+            // groupBoxShow
+            // 
+            this.groupBoxShow.Controls.Add(this.checkBoxViews);
+            this.groupBoxShow.Controls.Add(this.checkBoxSheets);
+            this.groupBoxShow.Location = new System.Drawing.Point(12, 288);
+            this.groupBoxShow.Name = "groupBoxShow";
+            this.groupBoxShow.Size = new System.Drawing.Size(311, 41);
+            this.groupBoxShow.TabIndex = 1;
+            this.groupBoxShow.TabStop = false;
+            this.groupBoxShow.Text = "Show";
+            // 
+            // checkBoxViews
+            // 
+            this.checkBoxViews.AutoSize = true;
+            this.checkBoxViews.Checked = true;
+            this.checkBoxViews.CheckState = System.Windows.Forms.CheckState.Checked;
+            this.checkBoxViews.Location = new System.Drawing.Point(148, 18);
+            this.checkBoxViews.Name = "checkBoxViews";
+            this.checkBoxViews.Size = new System.Drawing.Size(54, 17);
+            this.checkBoxViews.TabIndex = 1;
+            this.checkBoxViews.Text = "Views";
+            this.checkBoxViews.UseVisualStyleBackColor = true;
+            this.checkBoxViews.CheckedChanged += new System.EventHandler(this.checkBoxViews_CheckedChanged);
+            // 
+            // checkBoxSheets
+            // 
+            this.checkBoxSheets.AutoSize = true;
+            this.checkBoxSheets.Checked = true;
+            this.checkBoxSheets.CheckState = System.Windows.Forms.CheckState.Checked;
+            this.checkBoxSheets.Location = new System.Drawing.Point(7, 19);
+            this.checkBoxSheets.Name = "checkBoxSheets";
+            this.checkBoxSheets.Size = new System.Drawing.Size(59, 17);
+            this.checkBoxSheets.TabIndex = 0;
+            this.checkBoxSheets.Text = "Sheets";
+            this.checkBoxSheets.UseVisualStyleBackColor = true;
+            this.checkBoxSheets.CheckedChanged += new System.EventHandler(this.checkBoxSheets_CheckedChanged);
+            // 
+            // buttonCheckAll
+            // 
+            this.buttonCheckAll.Location = new System.Drawing.Point(333, 24);
+            this.buttonCheckAll.Name = "buttonCheckAll";
+            this.buttonCheckAll.Size = new System.Drawing.Size(85, 23);
+            this.buttonCheckAll.TabIndex = 0;
+            this.buttonCheckAll.Text = "Check &All";
+            this.buttonCheckAll.UseVisualStyleBackColor = true;
+            this.buttonCheckAll.Click += new System.EventHandler(this.buttonCheckAll_Click);
+            // 
+            // buttonCheckNone
+            // 
+            this.buttonCheckNone.Location = new System.Drawing.Point(333, 65);
+            this.buttonCheckNone.Name = "buttonCheckNone";
+            this.buttonCheckNone.Size = new System.Drawing.Size(85, 23);
+            this.buttonCheckNone.TabIndex = 1;
+            this.buttonCheckNone.Text = "Check &None";
+            this.buttonCheckNone.UseVisualStyleBackColor = true;
+            this.buttonCheckNone.Click += new System.EventHandler(this.buttonCheckNone_Click);
+            // 
+            // buttonOK
+            // 
+            this.buttonOK.DialogResult = System.Windows.Forms.DialogResult.OK;
+            this.buttonOK.Location = new System.Drawing.Point(238, 361);
+            this.buttonOK.Name = "buttonOK";
+            this.buttonOK.Size = new System.Drawing.Size(85, 23);
+            this.buttonOK.TabIndex = 2;
+            this.buttonOK.Text = "&OK";
+            this.buttonOK.UseVisualStyleBackColor = true;
+            this.buttonOK.Click += new System.EventHandler(this.buttonOK_Click);
+            // 
+            // buttonCancel
+            // 
+            this.buttonCancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
+            this.buttonCancel.Location = new System.Drawing.Point(333, 361);
+            this.buttonCancel.Name = "buttonCancel";
+            this.buttonCancel.Size = new System.Drawing.Size(85, 23);
+            this.buttonCancel.TabIndex = 3;
+            this.buttonCancel.Text = "&Cancel";
+            this.buttonCancel.UseVisualStyleBackColor = true;
+            // 
+            // checkedListBoxViews
+            // 
+            this.checkedListBoxViews.CheckOnClick = true;
+            this.checkedListBoxViews.FormattingEnabled = true;
+            this.checkedListBoxViews.Location = new System.Drawing.Point(12, 12);
+            this.checkedListBoxViews.Name = "checkedListBoxViews";
+            this.checkedListBoxViews.Size = new System.Drawing.Size(311, 274);
+            this.checkedListBoxViews.TabIndex = 3;
+            // 
+            // SelectViewsForm
+            // 
+            this.AcceptButton = this.buttonOK;
+            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.CancelButton = this.buttonCancel;
+            this.ClientSize = new System.Drawing.Size(432, 394);
+            this.Controls.Add(this.checkedListBoxViews);
+            this.Controls.Add(this.buttonCancel);
+            this.Controls.Add(this.buttonOK);
+            this.Controls.Add(this.buttonCheckNone);
+            this.Controls.Add(this.buttonCheckAll);
+            this.Controls.Add(this.groupBoxShow);
+            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
+            this.MaximizeBox = false;
+            this.MinimizeBox = false;
+            this.Name = "SelectViewsForm";
+            this.ShowIcon = false;
+            this.ShowInTaskbar = false;
+            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
+            this.Text = "View/Sheet Set";
+            this.groupBoxShow.ResumeLayout(false);
+            this.groupBoxShow.PerformLayout();
+            this.ResumeLayout(false);
+
+        }
+
+        #endregion
+
+        private System.Windows.Forms.GroupBox groupBoxShow;
+        private System.Windows.Forms.CheckBox checkBoxViews;
+        private System.Windows.Forms.CheckBox checkBoxSheets;
+        private System.Windows.Forms.Button buttonCheckAll;
+        private System.Windows.Forms.Button buttonCheckNone;
+        private System.Windows.Forms.Button buttonOK;
+        private System.Windows.Forms.Button buttonCancel;
+        private System.Windows.Forms.CheckedListBox checkedListBoxViews;
+    }
+}

SDK/Samples/ImportExport/CS/Export/SelectViewsForm.cs

@@ -0,0 +1,192 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Text;
+using System.Windows.Forms;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// Provide a dialog which lets users choose views to export.
+    /// </summary>
+    public partial class SelectViewsForm : System.Windows.Forms.Form
+    {
+        /// <summary>
+        /// Data class
+        /// </summary>
+        private SelectViewsData m_selectViewsData;
+
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        /// <param name="selectViewsData"></param>
+        public SelectViewsForm(SelectViewsData selectViewsData)
+        {
+            InitializeComponent();
+            m_selectViewsData = selectViewsData;
+            InitializeControls();
+        }
+
+        /// <summary>
+        /// Initialize values and status of controls
+        /// </summary>
+        void InitializeControls()
+        {
+            UpdateViews();
+        }
+
+        /// <summary>
+        /// Check all items
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        private void buttonCheckAll_Click(object sender, EventArgs e)
+        {
+            for(int i = 0; i < checkedListBoxViews.Items.Count; ++i)
+            {
+                checkedListBoxViews.SetItemChecked(i, true);
+            }
+        }
+
+        /// <summary>
+        /// Un-check all items
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        private void buttonCheckNone_Click(object sender, EventArgs e)
+        {
+            for (int i = 0; i < checkedListBoxViews.Items.Count; ++i)
+            {
+                checkedListBoxViews.SetItemChecked(i, false);
+            }
+        }
+
+        /// <summary>
+        /// Whether to show the sheets
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        private void checkBoxSheets_CheckedChanged(object sender, EventArgs e)
+        {
+            UpdateViews();
+        }
+
+        /// <summary>
+        /// Whether to show the views (except sheets)
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        private void checkBoxViews_CheckedChanged(object sender, EventArgs e)
+        {
+            UpdateViews();
+        }
+
+        /// <summary>
+        /// Update the views in the checked list box
+        /// </summary>
+        private void UpdateViews()
+        {
+            checkedListBoxViews.Items.Clear();
+            if (checkBoxViews.Checked)
+            {
+                foreach (Autodesk.Revit.DB.View view in m_selectViewsData.PrintableViews)
+                {
+                    checkedListBoxViews.Items.Add(view.ViewType.ToString() + ": " + view.Name);
+                }
+            }
+
+            if (checkBoxSheets.Checked)
+            {
+                foreach (Autodesk.Revit.DB.ViewSheet viewSheet in m_selectViewsData.PrintableSheets)
+                {
+                    checkedListBoxViews.Items.Add("Drawing Sheet: " + viewSheet.SheetNumber + " - " +
+                        viewSheet.Name);
+                }
+            }
+            checkedListBoxViews.Sorted = true;
+        }
+
+        /// <summary>
+        /// OK button clicked
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        private void buttonOK_Click(object sender, EventArgs e)
+        {
+            GetSelectedViews();
+            this.Close();           
+        }
+
+        /// <summary>
+        /// Transfer information back to SelectViewsData class
+        /// </summary>
+        /// <returns></returns>
+        private void GetSelectedViews()
+        {
+            m_selectViewsData.Contain3DView = false;
+
+            foreach(int index in checkedListBoxViews.CheckedIndices)
+            {
+                String text = checkedListBoxViews.Items[index].ToString();
+                String sheetPrefix = "Drawing Sheet: ";
+                if (text.StartsWith(sheetPrefix))
+                {
+                    text = text.Substring(sheetPrefix.Length);
+                    String sheetNumber;
+                    String sheetViewName;
+                    sheetNumber = text.Substring(0, text.IndexOf(" - "));
+                    sheetViewName = text.Substring(text.IndexOf(" - ") + 3);
+                    foreach(Autodesk.Revit.DB.ViewSheet viewSheet in m_selectViewsData.PrintableSheets)
+                    {
+                        if(viewSheet.SheetNumber == sheetNumber && viewSheet.Name == sheetViewName)
+                        {
+                            m_selectViewsData.SelectedViews.Insert(viewSheet);
+                            break;
+                        }
+                    }
+                }
+                else
+                {
+                    String viewType = text.Substring(0, text.IndexOf(": "));
+                    String viewName = text.Substring(text.IndexOf(": ") + 2);
+                    foreach (Autodesk.Revit.DB.View view in m_selectViewsData.PrintableViews)
+                    {
+                        Autodesk.Revit.DB.ViewType vt = view.ViewType;
+                        if(viewType == vt.ToString() && viewName == view.Name)
+                        {
+                            m_selectViewsData.SelectedViews.Insert(view);
+                            if (vt == Autodesk.Revit.DB.ViewType.ThreeD)
+                            {
+                                m_selectViewsData.Contain3DView = true;
+                            }
+                            break;
+                        }
+                    }
+                }
+            }
+        }
+    }
+}

SDK/Samples/ImportExport/CS/Export/SelectViewsForm.resx

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

SDK/Samples/ImportExport/CS/Import/ImportDWGData.cs

@@ -0,0 +1,630 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Text;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+
+using Autodesk.Revit;
+using Autodesk.Revit.DB;
+using Autodesk.Revit.UI;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// Data class which stores the information for importing dwg format
+    /// </summary>
+    public class ImportDWGData : ImportData
+    {
+        #region Class Member Variables
+        /// <summary>
+        /// ThisViewOnly
+        /// </summary>
+        private bool m_importThisViewOnly;
+
+        /// <summary>
+        /// All views
+        /// </summary>
+        private ViewSet m_views;
+
+        /// <summary>
+        /// Import view
+        /// </summary>
+        private View m_importView;
+
+        /// <summary>
+        /// ColorMode for import
+        /// </summary>
+        private List<String> m_colorMode;
+
+        /// <summary>
+        /// All available import color modes
+        /// </summary>
+        private List<Autodesk.Revit.DB.ImportColorMode> m_enumColorMode;
+
+        /// <summary>
+        /// Import color mode
+        /// </summary>
+        private Autodesk.Revit.DB.ImportColorMode m_importColorMode;
+
+        /// <summary>
+        /// Custom scale for import
+        /// </summary>
+        private double m_importCustomScale;
+
+        /// <summary>
+        /// OrientToView
+        /// </summary>
+        private bool m_importOrientToView;
+
+        /// <summary>
+        /// Placement
+        /// </summary>
+        private List<String> m_placement;
+
+        /// <summary>
+        /// All placement for layers to be imported
+        /// </summary>
+        private List<Autodesk.Revit.DB.ImportPlacement> m_enumPlacement;
+
+        /// <summary>
+        /// Placement for import
+        /// </summary>
+        private Autodesk.Revit.DB.ImportPlacement m_importPlacement;
+
+        /// <summary>
+        /// All units for layer to be imported
+        /// </summary>
+        private List<String> m_unit;
+
+        /// <summary>
+        /// All import unit for import layers
+        /// </summary>
+        private List<Autodesk.Revit.DB.ImportUnit> m_enumUnit;
+
+        /// <summary>
+        /// Import unit
+        /// </summary>
+        private Autodesk.Revit.DB.ImportUnit m_importUnit;
+
+        /// <summary>
+        /// All available layers only 
+        /// </summary>
+        private List<String> m_visibleLayersOnly;
+
+        /// <summary>
+        /// All boolean values for available visible layers
+        /// </summary>
+        private List<bool> m_enumVisibleLayersOnly;
+
+        /// <summary>
+        /// Whether import visible layer only
+        /// </summary>
+        private bool m_importVisibleLayersOnly;
+
+        /// <summary>
+        /// Whether active view is 3D
+        /// </summary>
+        private bool m_is3DView;
+        #endregion
+
+
+        #region Class Properties
+        /// <summary>
+        /// Get or set whether import this view only
+        /// </summary>
+        public bool ImportThisViewOnly
+        {
+            get
+            {
+                return m_importThisViewOnly;
+            }
+            set
+            {
+                m_importThisViewOnly = value;
+            }
+        }
+
+
+        /// <summary>
+        /// all views for import
+        /// </summary>
+        public ViewSet Views
+        {
+            get
+            {
+                return m_views;
+            }
+            set
+            {
+                m_views = value;
+            }
+        }
+
+
+        /// <summary>
+        /// Import view
+        /// </summary>
+        public View ImportView
+        {
+            get
+            {
+                return m_importView;
+            }
+            set
+            {
+                m_importView = value;
+            }
+        }
+
+
+        /// <summary>
+        /// All available color modes for import
+        /// </summary>
+        public ReadOnlyCollection<String> ColorMode
+        {
+            get
+            {
+                return new ReadOnlyCollection<String>(m_colorMode);
+            }
+        }
+
+
+        /// <summary>
+        /// All available import color modes
+        /// </summary>
+        public ReadOnlyCollection<Autodesk.Revit.DB.ImportColorMode> EnumColorMode
+        {
+            get
+            {
+                return new ReadOnlyCollection<Autodesk.Revit.DB.ImportColorMode>(m_enumColorMode);
+            }
+        }
+
+
+        /// <summary>
+        /// Import color mode
+        /// </summary>
+        public Autodesk.Revit.DB.ImportColorMode ImportColorMode
+        {
+            get
+            {
+                return m_importColorMode;
+            }
+            set
+            {
+                m_importColorMode = value;
+            }
+        }
+
+
+        /// <summary>
+        /// Custom scale for import
+        /// </summary>
+        public double ImportCustomScale
+        {
+            get
+            {
+                return m_importCustomScale;
+            }
+            set
+            {
+                m_importCustomScale = value;
+            }
+        }
+
+
+        /// <summary>
+        /// Whether import orient to view
+        /// </summary>
+        public bool ImportOrientToView
+        {
+            get
+            {
+                return m_importOrientToView;
+            }
+            set
+            {
+                m_importOrientToView = value;
+            }
+        }
+
+
+        /// <summary>
+        /// All placement for layers to be imported
+        /// </summary>
+        public ReadOnlyCollection<String> Placement
+        {
+            get
+            {
+                return new ReadOnlyCollection<String>(m_placement);
+            }
+        }
+
+
+        /// <summary>
+        /// All ImportPlacements for all layers to be imported
+        /// </summary>
+        public ReadOnlyCollection<Autodesk.Revit.DB.ImportPlacement> EnumPlacement
+        {
+            get
+            {
+                return new ReadOnlyCollection<Autodesk.Revit.DB.ImportPlacement>(m_enumPlacement);
+            }
+        }
+
+
+        /// <summary>
+        /// Import placement for import
+        /// </summary>
+        public Autodesk.Revit.DB.ImportPlacement ImportPlacement
+        {
+            get
+            {
+                return m_importPlacement;
+            }
+            set
+            {
+                m_importPlacement = value;
+            }
+        }
+
+
+        /// <summary>
+        /// All units for layer to be imported
+        /// </summary>
+        public ReadOnlyCollection<String> Unit
+        {
+            get
+            {
+                return new ReadOnlyCollection<string>(m_unit);
+            }
+        }
+
+
+        /// <summary>
+        /// All import unit for import layers
+        /// </summary>
+        public ReadOnlyCollection<Autodesk.Revit.DB.ImportUnit> EnumUnit
+        {
+            get
+            {
+                return new ReadOnlyCollection<Autodesk.Revit.DB.ImportUnit>(m_enumUnit);
+            }
+        }
+
+
+        /// <summary>
+        /// Get or set import unit
+        /// </summary>
+        public Autodesk.Revit.DB.ImportUnit ImportUnit
+        {
+            get
+            {
+                return m_importUnit;
+            }
+            set
+            {
+                m_importUnit = value;
+            }
+        }
+
+
+        /// <summary>
+        /// All available layers only 
+        /// </summary>
+        public ReadOnlyCollection<String> VisibleLayersOnly
+        {
+            get
+            {
+                return new ReadOnlyCollection<String>(m_visibleLayersOnly);
+            }
+        }
+
+
+        /// <summary>
+        /// All boolean values for available visible layers
+        /// </summary>
+        public ReadOnlyCollection<bool> EnumVisibleLayersOnly
+        {
+            get
+            {
+                return new ReadOnlyCollection<bool>(m_enumVisibleLayersOnly);
+            }
+        }
+
+
+        /// <summary>
+        /// Whether import visible layer only
+        /// </summary>
+        public bool ImportVisibleLayersOnly
+        {
+            get
+            {
+                return m_importVisibleLayersOnly;
+            }
+            set
+            {
+                m_importVisibleLayersOnly = value;
+            }
+        }
+
+        /// <summary>
+        /// Whether active view is 3D
+        /// </summary>
+        public bool Is3DView
+        {
+            get 
+            { 
+                return m_is3DView; 
+            }
+            set 
+            { 
+                m_is3DView = value; 
+            }
+        }
+        #endregion
+
+
+        #region Class Member Methods
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        /// <param name="commandData">Revit command data</param>
+        /// <param name="format">Format to import</param>
+        public ImportDWGData(ExternalCommandData commandData, ImportFormat format)
+            : base(commandData, format)
+        {
+            Initialize();
+        }
+
+
+        /// <summary>
+        /// Collect the parameters and export
+        /// </summary>
+        /// <returns></returns>
+        public override bool Import()
+        {
+            bool imported = false;
+
+            //parameter: DWGImportOptions
+            DWGImportOptions dwgImportOption = new DWGImportOptions();
+            dwgImportOption.ColorMode = m_importColorMode;
+            dwgImportOption.CustomScale = m_importCustomScale;
+            dwgImportOption.OrientToView = m_importOrientToView;
+            dwgImportOption.Placement = m_importPlacement;
+            dwgImportOption.ThisViewOnly = m_importThisViewOnly;
+            View view = null;
+            if (!m_importThisViewOnly)
+            {
+                view = m_importView;
+            }
+            else
+            {
+                view = m_activeDoc.ActiveView;
+            }
+            dwgImportOption.Unit = m_importUnit;
+            dwgImportOption.VisibleLayersOnly = m_importVisibleLayersOnly;
+
+            //parameter: ElementId
+            ElementId elementId = null;
+
+            //Import
+            Transaction t = new Transaction(m_activeDoc);
+            t.SetName("Import");
+            t.Start();
+            imported = m_activeDoc.Import(m_importFileFullName, dwgImportOption, view, out elementId);
+            t.Commit();
+
+            return imported;
+        }
+        #endregion
+
+
+        #region Class Implementation
+        /// <summary>
+        /// Initialize the variables
+        /// </summary>
+        private void Initialize()
+        {
+            //ColorMode
+            m_colorMode = new List<String>();
+            m_enumColorMode = new List<Autodesk.Revit.DB.ImportColorMode>();
+            m_colorMode.Add("Black and white");
+            m_enumColorMode.Add(Autodesk.Revit.DB.ImportColorMode.BlackAndWhite);
+            m_colorMode.Add("Preserve colors");
+            m_enumColorMode.Add(Autodesk.Revit.DB.ImportColorMode.Preserved);
+            m_colorMode.Add("Invert colors");
+            m_enumColorMode.Add(Autodesk.Revit.DB.ImportColorMode.Inverted);
+
+            //Placement
+            m_placement = new List<String>();
+            m_enumPlacement = new List<Autodesk.Revit.DB.ImportPlacement>();
+            m_placement.Add("Center-to-center");
+            m_enumPlacement.Add(Autodesk.Revit.DB.ImportPlacement.Centered);
+            m_placement.Add("Origin-to-origin");
+            m_enumPlacement.Add(Autodesk.Revit.DB.ImportPlacement.Origin);
+
+            //Unit
+            m_unit = new List<String>();
+            m_enumUnit = new List<Autodesk.Revit.DB.ImportUnit>();
+            m_unit.Add("Auto-Detect");
+            m_enumUnit.Add(Autodesk.Revit.DB.ImportUnit.Default);
+            m_unit.Add(Autodesk.Revit.DB.ImportUnit.Foot.ToString());
+            m_enumUnit.Add(Autodesk.Revit.DB.ImportUnit.Foot);
+            m_unit.Add(Autodesk.Revit.DB.ImportUnit.Inch.ToString());
+            m_enumUnit.Add(Autodesk.Revit.DB.ImportUnit.Inch);
+            m_unit.Add(Autodesk.Revit.DB.ImportUnit.Meter.ToString());
+            m_enumUnit.Add(Autodesk.Revit.DB.ImportUnit.Meter);
+            m_unit.Add(Autodesk.Revit.DB.ImportUnit.Decimeter.ToString());
+            m_enumUnit.Add(Autodesk.Revit.DB.ImportUnit.Decimeter);
+            m_unit.Add(Autodesk.Revit.DB.ImportUnit.Centimeter.ToString());
+            m_enumUnit.Add(Autodesk.Revit.DB.ImportUnit.Centimeter);
+            m_unit.Add(Autodesk.Revit.DB.ImportUnit.Millimeter.ToString());
+            m_enumUnit.Add(Autodesk.Revit.DB.ImportUnit.Millimeter);
+            m_unit.Add("Custom");
+            m_enumUnit.Add(Autodesk.Revit.DB.ImportUnit.Default);
+
+            //VisibleLayersOnly
+            m_visibleLayersOnly = new List<String>();
+            m_enumVisibleLayersOnly = new List<bool>();
+            m_visibleLayersOnly.Add("All");
+            m_enumVisibleLayersOnly.Add(false);
+            m_visibleLayersOnly.Add("Visible");
+            m_enumVisibleLayersOnly.Add(true);
+
+            //Whether active view is 3D
+            m_is3DView = false;
+            if (m_activeDoc.ActiveView.ViewType == Autodesk.Revit.DB.ViewType.ThreeD)
+            {
+                m_is3DView = true;
+            }            
+
+            //Views
+            m_views = new ViewSet();
+            GetViews();
+
+            m_importCustomScale = 0.0;
+            m_importOrientToView = true;
+            m_importUnit = Autodesk.Revit.DB.ImportUnit.Default;
+            m_importThisViewOnly = false;
+            m_importView = m_activeDoc.ActiveView;
+            m_importColorMode = Autodesk.Revit.DB.ImportColorMode.Inverted;
+            m_importPlacement = Autodesk.Revit.DB.ImportPlacement.Centered;
+            m_importVisibleLayersOnly = false;
+
+            m_filter = "DWG Files (*.dwg)|*.dwg";
+            m_title = "Import DWG";
+        }
+
+
+        /// <summary>
+        /// Get all the views to be displayed
+        /// </summary>
+        private void GetViews()
+        {
+            FilteredElementCollector collector = new FilteredElementCollector(m_activeDoc);
+            FilteredElementIterator itor = collector.OfClass(typeof(View)).GetElementIterator();
+            itor.Reset();
+            ViewSet views = new ViewSet();
+            ViewSet floorPlans = new ViewSet();
+            ViewSet ceilingPlans = new ViewSet();
+            ViewSet engineeringPlans = new ViewSet();
+            while (itor.MoveNext())
+            {
+                View view = itor.Current as View;
+                // skip view templates because they're invalid for import/export
+                if (view == null || view.IsTemplate)
+                {
+                    continue;
+                }
+                else if (view.ViewType == Autodesk.Revit.DB.ViewType.FloorPlan)
+                {
+                    floorPlans.Insert(view);
+                }
+                else if (view.ViewType == Autodesk.Revit.DB.ViewType.CeilingPlan)
+                {
+                    ceilingPlans.Insert(view);
+                }
+                else if (view.ViewType == Autodesk.Revit.DB.ViewType.EngineeringPlan)
+                {
+                    engineeringPlans.Insert(view);
+                }
+            }
+
+            foreach (View floorPlan in floorPlans)
+            {
+                foreach (View ceilingPlan in ceilingPlans)
+                {
+                    if (floorPlan.Name == ceilingPlan.Name)
+                    {
+                        views.Insert(floorPlan);
+                    }
+                }
+            }
+
+            foreach (View engineeringPlan in engineeringPlans)
+            {
+                if (engineeringPlan.Name == engineeringPlan.GenLevel.Name)
+                {
+                    views.Insert(engineeringPlan);
+                }
+            }
+
+            View activeView = m_activeDoc.ActiveView;
+            Autodesk.Revit.DB.ViewType viewType = activeView.ViewType;
+            if (viewType == Autodesk.Revit.DB.ViewType.FloorPlan ||
+                viewType == Autodesk.Revit.DB.ViewType.CeilingPlan)
+            {
+                m_views.Insert(activeView);
+                foreach (View view in views)
+                {
+                    if (view.GenLevel.Elevation < activeView.GenLevel.Elevation)
+                    {
+                        m_views.Insert(view);
+                    }
+                }
+            }
+            else if (viewType == Autodesk.Revit.DB.ViewType.EngineeringPlan)
+            {
+                if (views.Contains(activeView))
+                {
+                    m_views.Insert(activeView);
+                }
+                foreach (View view in views)
+                {
+                    if (view.GenLevel.Elevation < activeView.GenLevel.Elevation)
+                    {
+                        m_views.Insert(view);
+                    }
+                }
+            }
+            else//Get view of the lowest elevation
+            {
+                int i = 0;
+                double elevation = 0;
+                View viewLowestElevation = null;
+                foreach (View view in views)
+                {
+                    if (i == 0)
+                    {
+                        elevation = view.GenLevel.Elevation;
+                        viewLowestElevation = view;
+                    }
+                    else
+                    {
+                        if (view.GenLevel.Elevation <= elevation)
+                        {
+                            elevation = view.GenLevel.Elevation;
+                            viewLowestElevation = view;
+                        }
+                    }
+
+                    i++;
+                }
+                m_views.Insert(viewLowestElevation);
+            }
+        }
+        #endregion
+    }
+}

SDK/Samples/ImportExport/CS/Import/ImportDWGForm.Designer.cs

@@ -0,0 +1,397 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// It contains a dialog which provides the options of import
+    /// </summary>
+    partial class ImportDWGForm
+    {
+        /// <summary>
+        /// Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        /// Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Windows Form Designer generated code
+
+        /// <summary>
+        /// Required method for Designer support - do not modify
+        /// the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            this.buttonCancel = new System.Windows.Forms.Button();
+            this.buttonOpen = new System.Windows.Forms.Button();
+            this.labelFileName = new System.Windows.Forms.Label();
+            this.textBoxFileSource = new System.Windows.Forms.TextBox();
+            this.buttonBrowser = new System.Windows.Forms.Button();
+            this.groupBoxPositioning = new System.Windows.Forms.GroupBox();
+            this.labelAutomaticallyPlace = new System.Windows.Forms.Label();
+            this.labelPlaceLevel = new System.Windows.Forms.Label();
+            this.radioButtonOrigin2Origin = new System.Windows.Forms.RadioButton();
+            this.radioButtonCenter2Center = new System.Windows.Forms.RadioButton();
+            this.comboBoxLevel = new System.Windows.Forms.ComboBox();
+            this.checkBoxOrient2View = new System.Windows.Forms.CheckBox();
+            this.groupBoxScaling = new System.Windows.Forms.GroupBox();
+            this.comboBoxUnits = new System.Windows.Forms.ComboBox();
+            this.textBoxScale = new System.Windows.Forms.TextBox();
+            this.labelScaleFactor = new System.Windows.Forms.Label();
+            this.labelUnits = new System.Windows.Forms.Label();
+            this.groupBoxColors = new System.Windows.Forms.GroupBox();
+            this.radioButtonInvertColor = new System.Windows.Forms.RadioButton();
+            this.radioButtonPreserve = new System.Windows.Forms.RadioButton();
+            this.radioButtonBlackWhite = new System.Windows.Forms.RadioButton();
+            this.checkBoxCurrentViewOnly = new System.Windows.Forms.CheckBox();
+            this.comboBoxLayers = new System.Windows.Forms.ComboBox();
+            this.labelLayers = new System.Windows.Forms.Label();
+            this.groupBoxPositioning.SuspendLayout();
+            this.groupBoxScaling.SuspendLayout();
+            this.groupBoxColors.SuspendLayout();
+            this.SuspendLayout();
+            // 
+            // buttonCancel
+            // 
+            this.buttonCancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
+            this.buttonCancel.Location = new System.Drawing.Point(390, 285);
+            this.buttonCancel.Name = "buttonCancel";
+            this.buttonCancel.Size = new System.Drawing.Size(75, 21);
+            this.buttonCancel.TabIndex = 8;
+            this.buttonCancel.Text = "&Cancel";
+            this.buttonCancel.UseVisualStyleBackColor = true;
+            // 
+            // buttonOpen
+            // 
+            this.buttonOpen.Location = new System.Drawing.Point(303, 285);
+            this.buttonOpen.Name = "buttonOpen";
+            this.buttonOpen.Size = new System.Drawing.Size(75, 21);
+            this.buttonOpen.TabIndex = 7;
+            this.buttonOpen.Text = "&Open";
+            this.buttonOpen.UseVisualStyleBackColor = true;
+            this.buttonOpen.Click += new System.EventHandler(this.buttonOpen_Click);
+            // 
+            // labelFileName
+            // 
+            this.labelFileName.AutoSize = true;
+            this.labelFileName.Location = new System.Drawing.Point(10, 15);
+            this.labelFileName.Name = "labelFileName";
+            this.labelFileName.Size = new System.Drawing.Size(61, 13);
+            this.labelFileName.TabIndex = 10;
+            this.labelFileName.Text = "File source:";
+            // 
+            // textBoxFileSource
+            // 
+            this.textBoxFileSource.Location = new System.Drawing.Point(73, 11);
+            this.textBoxFileSource.Name = "textBoxFileSource";
+            this.textBoxFileSource.Size = new System.Drawing.Size(369, 20);
+            this.textBoxFileSource.TabIndex = 1;
+            // 
+            // buttonBrowser
+            // 
+            this.buttonBrowser.Location = new System.Drawing.Point(442, 11);
+            this.buttonBrowser.Name = "buttonBrowser";
+            this.buttonBrowser.Size = new System.Drawing.Size(24, 20);
+            this.buttonBrowser.TabIndex = 0;
+            this.buttonBrowser.Text = "...";
+            this.buttonBrowser.UseVisualStyleBackColor = true;
+            this.buttonBrowser.Click += new System.EventHandler(this.buttonBrowser_Click);
+            // 
+            // groupBoxPositioning
+            // 
+            this.groupBoxPositioning.Controls.Add(this.labelAutomaticallyPlace);
+            this.groupBoxPositioning.Controls.Add(this.labelPlaceLevel);
+            this.groupBoxPositioning.Controls.Add(this.radioButtonOrigin2Origin);
+            this.groupBoxPositioning.Controls.Add(this.radioButtonCenter2Center);
+            this.groupBoxPositioning.Controls.Add(this.comboBoxLevel);
+            this.groupBoxPositioning.Controls.Add(this.checkBoxOrient2View);
+            this.groupBoxPositioning.Location = new System.Drawing.Point(229, 43);
+            this.groupBoxPositioning.Name = "groupBoxPositioning";
+            this.groupBoxPositioning.Size = new System.Drawing.Size(237, 157);
+            this.groupBoxPositioning.TabIndex = 5;
+            this.groupBoxPositioning.TabStop = false;
+            this.groupBoxPositioning.Text = "Positioning";
+            // 
+            // labelAutomaticallyPlace
+            // 
+            this.labelAutomaticallyPlace.AutoSize = true;
+            this.labelAutomaticallyPlace.Location = new System.Drawing.Point(15, 18);
+            this.labelAutomaticallyPlace.Name = "labelAutomaticallyPlace";
+            this.labelAutomaticallyPlace.Size = new System.Drawing.Size(98, 13);
+            this.labelAutomaticallyPlace.TabIndex = 0;
+            this.labelAutomaticallyPlace.Text = "Automatically place";
+            // 
+            // labelPlaceLevel
+            // 
+            this.labelPlaceLevel.AutoSize = true;
+            this.labelPlaceLevel.Location = new System.Drawing.Point(14, 129);
+            this.labelPlaceLevel.Name = "labelPlaceLevel";
+            this.labelPlaceLevel.Size = new System.Drawing.Size(74, 13);
+            this.labelPlaceLevel.TabIndex = 5;
+            this.labelPlaceLevel.Text = "Place at level:";
+            // 
+            // radioButtonOrigin2Origin
+            // 
+            this.radioButtonOrigin2Origin.AutoSize = true;
+            this.radioButtonOrigin2Origin.Location = new System.Drawing.Point(19, 60);
+            this.radioButtonOrigin2Origin.Name = "radioButtonOrigin2Origin";
+            this.radioButtonOrigin2Origin.Size = new System.Drawing.Size(92, 17);
+            this.radioButtonOrigin2Origin.TabIndex = 2;
+            this.radioButtonOrigin2Origin.TabStop = true;
+            this.radioButtonOrigin2Origin.Text = "Origin-to-origin";
+            this.radioButtonOrigin2Origin.UseVisualStyleBackColor = true;
+            // 
+            // radioButtonCenter2Center
+            // 
+            this.radioButtonCenter2Center.AutoSize = true;
+            this.radioButtonCenter2Center.Checked = true;
+            this.radioButtonCenter2Center.Location = new System.Drawing.Point(19, 37);
+            this.radioButtonCenter2Center.Name = "radioButtonCenter2Center";
+            this.radioButtonCenter2Center.Size = new System.Drawing.Size(101, 17);
+            this.radioButtonCenter2Center.TabIndex = 1;
+            this.radioButtonCenter2Center.TabStop = true;
+            this.radioButtonCenter2Center.Text = "Center-to-center";
+            this.radioButtonCenter2Center.UseVisualStyleBackColor = true;
+            // 
+            // comboBoxLevel
+            // 
+            this.comboBoxLevel.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
+            this.comboBoxLevel.FormattingEnabled = true;
+            this.comboBoxLevel.Location = new System.Drawing.Point(91, 125);
+            this.comboBoxLevel.Name = "comboBoxLevel";
+            this.comboBoxLevel.Size = new System.Drawing.Size(122, 21);
+            this.comboBoxLevel.TabIndex = 4;
+            // 
+            // checkBoxOrient2View
+            // 
+            this.checkBoxOrient2View.AutoSize = true;
+            this.checkBoxOrient2View.Checked = true;
+            this.checkBoxOrient2View.CheckState = System.Windows.Forms.CheckState.Checked;
+            this.checkBoxOrient2View.Location = new System.Drawing.Point(17, 104);
+            this.checkBoxOrient2View.Name = "checkBoxOrient2View";
+            this.checkBoxOrient2View.Size = new System.Drawing.Size(92, 17);
+            this.checkBoxOrient2View.TabIndex = 3;
+            this.checkBoxOrient2View.Text = "Orient to View";
+            this.checkBoxOrient2View.UseVisualStyleBackColor = true;
+            // 
+            // groupBoxScaling
+            // 
+            this.groupBoxScaling.Controls.Add(this.comboBoxUnits);
+            this.groupBoxScaling.Controls.Add(this.textBoxScale);
+            this.groupBoxScaling.Controls.Add(this.labelScaleFactor);
+            this.groupBoxScaling.Controls.Add(this.labelUnits);
+            this.groupBoxScaling.Location = new System.Drawing.Point(10, 202);
+            this.groupBoxScaling.Name = "groupBoxScaling";
+            this.groupBoxScaling.Size = new System.Drawing.Size(456, 50);
+            this.groupBoxScaling.TabIndex = 6;
+            this.groupBoxScaling.TabStop = false;
+            this.groupBoxScaling.Text = "Scaling";
+            // 
+            // comboBoxUnits
+            // 
+            this.comboBoxUnits.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
+            this.comboBoxUnits.FormattingEnabled = true;
+            this.comboBoxUnits.Location = new System.Drawing.Point(79, 18);
+            this.comboBoxUnits.Name = "comboBoxUnits";
+            this.comboBoxUnits.Size = new System.Drawing.Size(121, 21);
+            this.comboBoxUnits.TabIndex = 0;
+            this.comboBoxUnits.SelectedIndexChanged += new System.EventHandler(this.comboBoxUnits_SelectedIndexChanged);
+            // 
+            // textBoxScale
+            // 
+            this.textBoxScale.Enabled = false;
+            this.textBoxScale.Location = new System.Drawing.Point(310, 19);
+            this.textBoxScale.Name = "textBoxScale";
+            this.textBoxScale.Size = new System.Drawing.Size(122, 20);
+            this.textBoxScale.TabIndex = 1;
+            this.textBoxScale.Text = 1.0.ToString("0.000000");
+            this.textBoxScale.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.textBoxScale_KeyPress);
+            this.textBoxScale.TextChanged += new System.EventHandler(this.textBoxScale_TextChanged);
+            // 
+            // labelScaleFactor
+            // 
+            this.labelScaleFactor.AutoSize = true;
+            this.labelScaleFactor.Location = new System.Drawing.Point(234, 22);
+            this.labelScaleFactor.Name = "labelScaleFactor";
+            this.labelScaleFactor.Size = new System.Drawing.Size(67, 13);
+            this.labelScaleFactor.TabIndex = 2;
+            this.labelScaleFactor.Text = "Scale factor:";
+            // 
+            // labelUnits
+            // 
+            this.labelUnits.AutoSize = true;
+            this.labelUnits.Location = new System.Drawing.Point(7, 22);
+            this.labelUnits.Name = "labelUnits";
+            this.labelUnits.Size = new System.Drawing.Size(64, 13);
+            this.labelUnits.TabIndex = 0;
+            this.labelUnits.Text = "Import units:";
+            // 
+            // groupBoxColors
+            // 
+            this.groupBoxColors.Controls.Add(this.radioButtonInvertColor);
+            this.groupBoxColors.Controls.Add(this.radioButtonPreserve);
+            this.groupBoxColors.Controls.Add(this.radioButtonBlackWhite);
+            this.groupBoxColors.Location = new System.Drawing.Point(10, 43);
+            this.groupBoxColors.Name = "groupBoxColors";
+            this.groupBoxColors.Size = new System.Drawing.Size(200, 95);
+            this.groupBoxColors.TabIndex = 2;
+            this.groupBoxColors.TabStop = false;
+            this.groupBoxColors.Text = "Layer/Level Colors";
+            // 
+            // radioButtonInvertColor
+            // 
+            this.radioButtonInvertColor.AutoSize = true;
+            this.radioButtonInvertColor.Checked = true;
+            this.radioButtonInvertColor.Location = new System.Drawing.Point(14, 66);
+            this.radioButtonInvertColor.Name = "radioButtonInvertColor";
+            this.radioButtonInvertColor.Size = new System.Drawing.Size(83, 17);
+            this.radioButtonInvertColor.TabIndex = 2;
+            this.radioButtonInvertColor.TabStop = true;
+            this.radioButtonInvertColor.Text = "Invert colors";
+            this.radioButtonInvertColor.UseVisualStyleBackColor = true;
+            // 
+            // radioButtonPreserve
+            // 
+            this.radioButtonPreserve.AutoSize = true;
+            this.radioButtonPreserve.Location = new System.Drawing.Point(14, 43);
+            this.radioButtonPreserve.Name = "radioButtonPreserve";
+            this.radioButtonPreserve.Size = new System.Drawing.Size(98, 17);
+            this.radioButtonPreserve.TabIndex = 1;
+            this.radioButtonPreserve.Text = "Preserve colors";
+            this.radioButtonPreserve.UseVisualStyleBackColor = true;
+            // 
+            // radioButtonBlackWhite
+            // 
+            this.radioButtonBlackWhite.AutoSize = true;
+            this.radioButtonBlackWhite.Location = new System.Drawing.Point(15, 20);
+            this.radioButtonBlackWhite.Name = "radioButtonBlackWhite";
+            this.radioButtonBlackWhite.Size = new System.Drawing.Size(101, 17);
+            this.radioButtonBlackWhite.TabIndex = 0;
+            this.radioButtonBlackWhite.Text = "Black and white";
+            this.radioButtonBlackWhite.UseVisualStyleBackColor = true;
+            // 
+            // checkBoxCurrentViewOnly
+            // 
+            this.checkBoxCurrentViewOnly.AutoSize = true;
+            this.checkBoxCurrentViewOnly.Location = new System.Drawing.Point(17, 147);
+            this.checkBoxCurrentViewOnly.Name = "checkBoxCurrentViewOnly";
+            this.checkBoxCurrentViewOnly.Size = new System.Drawing.Size(107, 17);
+            this.checkBoxCurrentViewOnly.TabIndex = 3;
+            this.checkBoxCurrentViewOnly.Text = "Current view only";
+            this.checkBoxCurrentViewOnly.UseVisualStyleBackColor = true;
+            this.checkBoxCurrentViewOnly.CheckedChanged += new System.EventHandler(this.checkBoxCurrentViewOnly_CheckedChanged);
+            // 
+            // comboBoxLayers
+            // 
+            this.comboBoxLayers.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
+            this.comboBoxLayers.FormattingEnabled = true;
+            this.comboBoxLayers.Location = new System.Drawing.Point(88, 168);
+            this.comboBoxLayers.Name = "comboBoxLayers";
+            this.comboBoxLayers.Size = new System.Drawing.Size(122, 21);
+            this.comboBoxLayers.TabIndex = 4;
+            // 
+            // labelLayers
+            // 
+            this.labelLayers.AutoSize = true;
+            this.labelLayers.Location = new System.Drawing.Point(14, 172);
+            this.labelLayers.Name = "labelLayers";
+            this.labelLayers.Size = new System.Drawing.Size(41, 13);
+            this.labelLayers.TabIndex = 5;
+            this.labelLayers.Text = "Layers:";
+            // 
+            // ImportDWGForm
+            // 
+            this.AcceptButton = this.buttonOpen;
+            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.CancelButton = this.buttonCancel;
+            this.ClientSize = new System.Drawing.Size(480, 316);
+            this.Controls.Add(this.checkBoxCurrentViewOnly);
+            this.Controls.Add(this.groupBoxPositioning);
+            this.Controls.Add(this.labelLayers);
+            this.Controls.Add(this.groupBoxScaling);
+            this.Controls.Add(this.groupBoxColors);
+            this.Controls.Add(this.buttonBrowser);
+            this.Controls.Add(this.comboBoxLayers);
+            this.Controls.Add(this.buttonCancel);
+            this.Controls.Add(this.buttonOpen);
+            this.Controls.Add(this.labelFileName);
+            this.Controls.Add(this.textBoxFileSource);
+            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
+            this.MaximizeBox = false;
+            this.MinimizeBox = false;
+            this.Name = "ImportDWGForm";
+            this.ShowIcon = false;
+            this.ShowInTaskbar = false;
+            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
+            this.Text = "Import";
+            this.groupBoxPositioning.ResumeLayout(false);
+            this.groupBoxPositioning.PerformLayout();
+            this.groupBoxScaling.ResumeLayout(false);
+            this.groupBoxScaling.PerformLayout();
+            this.groupBoxColors.ResumeLayout(false);
+            this.groupBoxColors.PerformLayout();
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+        }
+
+        #endregion
+
+        private System.Windows.Forms.Button buttonCancel;
+        private System.Windows.Forms.Button buttonOpen;
+        private System.Windows.Forms.Label labelFileName;
+        private System.Windows.Forms.TextBox textBoxFileSource;
+        private System.Windows.Forms.Button buttonBrowser;
+        private System.Windows.Forms.GroupBox groupBoxPositioning;
+        private System.Windows.Forms.RadioButton radioButtonOrigin2Origin;
+        private System.Windows.Forms.RadioButton radioButtonCenter2Center;
+        private System.Windows.Forms.CheckBox checkBoxCurrentViewOnly;
+        private System.Windows.Forms.ComboBox comboBoxLevel;
+        private System.Windows.Forms.CheckBox checkBoxOrient2View;
+        private System.Windows.Forms.GroupBox groupBoxScaling;
+        private System.Windows.Forms.TextBox textBoxScale;
+        private System.Windows.Forms.Label labelScaleFactor;
+        private System.Windows.Forms.Label labelUnits;
+        private System.Windows.Forms.GroupBox groupBoxColors;
+        private System.Windows.Forms.RadioButton radioButtonInvertColor;
+        private System.Windows.Forms.RadioButton radioButtonPreserve;
+        private System.Windows.Forms.RadioButton radioButtonBlackWhite;
+        private System.Windows.Forms.Label labelAutomaticallyPlace;
+        private System.Windows.Forms.Label labelPlaceLevel;
+        private System.Windows.Forms.ComboBox comboBoxUnits;
+        private System.Windows.Forms.ComboBox comboBoxLayers;
+        private System.Windows.Forms.Label labelLayers;
+    }
+}

SDK/Samples/ImportExport/CS/Import/ImportDWGForm.cs

@@ -0,0 +1,362 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Text;
+using System.Windows.Forms;
+using System.Reflection;
+using System.IO;
+
+using Autodesk.Revit;
+using Autodesk.Revit.DB;
+using Autodesk.Revit.UI;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// It contains a dialog which provides the options of importing dwg format
+    /// </summary>
+    public partial class ImportDWGForm : System.Windows.Forms.Form
+    {
+        /// <summary>
+        /// Data class
+        /// </summary>
+        ImportDWGData m_importData;
+
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        /// <param name="importData"></param>
+        public ImportDWGForm(ImportDWGData importData)
+        {
+            InitializeComponent();
+            m_importData = importData;
+            InitializeControls();
+        }
+
+        /// <summary>
+        /// Change the status of checkBoxOrient2View and comboBoxLevel according to the selection
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        private void checkBoxCurrentViewOnly_CheckedChanged(object sender, EventArgs e)
+        {
+            bool currentViewOnly = checkBoxCurrentViewOnly.Checked;
+            checkBoxOrient2View.Enabled = !currentViewOnly;
+            comboBoxLevel.Enabled = !currentViewOnly;
+        }
+
+        /// <summary>
+        /// Initialize values and status of controls
+        /// </summary>
+        private void InitializeControls()
+        {
+            //Layers
+            foreach (String layer in m_importData.VisibleLayersOnly)
+            {
+                comboBoxLayers.Items.Add(layer);
+            }
+            comboBoxLayers.SelectedIndex = 0;
+
+            //unit
+            foreach (String unit in m_importData.Unit)
+            {
+                comboBoxUnits.Items.Add(unit);
+            }
+            comboBoxUnits.SelectedIndex = 0;
+
+            //Level
+            foreach (Autodesk.Revit.DB.View view in m_importData.Views)
+            {
+                comboBoxLevel.Items.Add(view.Name);
+            }
+            comboBoxLevel.SelectedIndex = 0;
+
+            //If active view is 3D
+            if (m_importData.Is3DView)
+            {
+                checkBoxCurrentViewOnly.Checked = false;
+                checkBoxCurrentViewOnly.Enabled = false;
+            }
+
+            this.Text = m_importData.Title;
+        }
+
+        /// <summary>
+        /// Specify a file to export from
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        private void buttonBrowser_Click(object sender, EventArgs e)
+        {
+            String returnFileFullName = String.Empty;
+            if (MainData.ShowOpenDialog(m_importData, ref returnFileFullName) != DialogResult.Cancel)
+            {
+                textBoxFileSource.Text = returnFileFullName;
+            }
+        }
+
+        /// <summary>
+        /// Change the status of textBoxScale according to the selection
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        private void comboBoxUnits_SelectedIndexChanged(object sender, EventArgs e)
+        {
+            bool custom = comboBoxUnits.SelectedIndex == 7;
+            textBoxScale.Enabled = custom;
+        }
+
+        /// <summary>
+        /// Transfer information back to ImportData class and execute IMPORT operation
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        private void buttonOpen_Click(object sender, EventArgs e)
+        {
+            if (ValidateFileName())
+            {
+                //Color Mode
+                SetImportColorMode();
+                //Placement
+                SetImportPlacement();
+                //Current view only, Orient to view, view to import into
+                SetImportViewsRelated();
+                //Visible layers only
+                SetImportLayers();
+                //Unit, scaling
+                SetImportUnitsAndScaling();
+
+                //Import
+                try
+                {
+                    if (!m_importData.Import())
+                    {
+                        TaskDialog.Show("Import", "Cannot import " + Path.GetFileName(m_importData.ImportFileFullName) +
+                        " in current settings.", TaskDialogCommonButtons.Ok);
+                    }
+                }
+                catch (Exception ex)
+                {
+                    TaskDialog.Show("Import Failed", ex.ToString(), TaskDialogCommonButtons.Ok);
+                }
+
+                this.DialogResult = DialogResult.OK;
+                this.Close();
+            }
+        }
+
+        /// <summary>
+        /// Validate the file to import
+        /// </summary>
+        /// <returns></returns>
+        private Boolean ValidateFileName()
+        {
+            String fileNameFull = textBoxFileSource.Text;
+            //If the textBoxFileSource is empty
+            if (String.IsNullOrEmpty(fileNameFull))
+            {
+                TaskDialog.Show("Information", "Please specify the folder and file name!", TaskDialogCommonButtons.Ok);
+                textBoxFileSource.Focus();
+                return false;
+            }
+
+            if (!File.Exists(fileNameFull))
+            {
+                TaskDialog.Show("Information", "Please specify an existing file!", TaskDialogCommonButtons.Ok);
+                textBoxFileSource.Focus();
+                return false;
+            }
+
+            m_importData.ImportFileFullName = fileNameFull;
+
+            return true;
+        }
+
+        /// <summary>
+        /// Set the value of color mode
+        /// </summary>
+        private void SetImportColorMode()
+        {
+            String colorMode;
+            if (radioButtonBlackWhite.Checked)
+            {
+                colorMode = radioButtonBlackWhite.Text;
+            }
+            else if (radioButtonPreserve.Checked)
+            {
+                colorMode = radioButtonPreserve.Text;
+            }
+            else
+            {
+                colorMode = radioButtonInvertColor.Text;
+            }
+
+            int indexColor = 0;
+            for (int i = 0; i < m_importData.ColorMode.Count; ++i)
+            {
+                if (colorMode == m_importData.ColorMode[i])
+                {
+                    indexColor = i;
+                    break;
+                }
+            }
+
+            m_importData.ImportColorMode = m_importData.EnumColorMode[indexColor];
+        }
+
+        /// <summary>
+        /// Set the value of placement
+        /// </summary>
+        private void SetImportPlacement()
+        {
+            String placement;
+            if (radioButtonCenter2Center.Checked)
+            {
+                placement = radioButtonCenter2Center.Text;
+            }
+            else
+            {
+                placement = radioButtonOrigin2Origin.Text;
+            }
+
+            int indexPlacement = 0;
+            for (int i = 0; i < m_importData.Placement.Count; ++i)
+            {
+                if (placement == m_importData.Placement[i])
+                {
+                    indexPlacement = i;
+                    break;
+                }
+            }
+
+            m_importData.ImportPlacement = m_importData.EnumPlacement[indexPlacement];
+        }
+
+        /// <summary>
+        /// Set the value of ImportThisViewOnly, ImportOrientToView, ImportView
+        /// </summary>
+        private void SetImportViewsRelated()
+        {
+            if (checkBoxCurrentViewOnly.Checked)
+            {
+                m_importData.ImportThisViewOnly = true;
+            }
+            else
+            {
+                m_importData.ImportThisViewOnly = false;
+                m_importData.ImportOrientToView = checkBoxOrient2View.Checked;
+                String viewName = comboBoxLevel.SelectedItem.ToString();
+                foreach (Autodesk.Revit.DB.View view in m_importData.Views)
+                {
+                    if (viewName == view.Name)
+                    {
+                        m_importData.ImportView = view;
+                        break;
+                    }
+                }
+            }
+        }
+
+        /// <summary>
+        /// Set the value of ImportVisibleLayersOnly
+        /// </summary>
+        private void SetImportLayers()
+        {
+            //comboBoxLayers
+            m_importData.ImportVisibleLayersOnly = m_importData.EnumVisibleLayersOnly[comboBoxLayers.SelectedIndex];
+        }
+
+        /// <summary>
+        /// Set the value of unit, scaling
+        /// </summary>
+        private void SetImportUnitsAndScaling()
+        {
+            bool custom = comboBoxUnits.SelectedIndex == 7;
+
+            //Custom is selected
+            if (custom)
+            {
+                //Set the scaling
+                m_importData.ImportCustomScale = Double.Parse(textBoxScale.Text);
+            }
+            else
+            {
+                //Do not change the scaling
+                //Set unit
+                m_importData.ImportUnit = m_importData.EnumUnit[comboBoxUnits.SelectedIndex];
+            }
+        }
+
+        /// <summary>
+        /// Only numbers and '.' permitted
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        private void textBoxScale_KeyPress(object sender, KeyPressEventArgs e)
+        {
+            if ((e.KeyChar < (char)46 || e.KeyChar > (char)57) && (e.KeyChar != (char)8 || e.KeyChar == (char)47))
+            {
+                e.Handled = true;
+            }
+            else
+            {
+                e.Handled = false;
+            }
+        }
+
+        /// <summary>
+        /// Only one '.' permitted
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        private void textBoxScale_TextChanged(object sender, EventArgs e)
+        {
+            bool newPoint = false;
+            char tmp = '0';
+            string text = textBoxScale.Text.Trim();
+            StringBuilder textAfter = new StringBuilder();
+            for (int i = 0; i < text.Length; i++)
+            {
+                tmp = char.Parse(text.Substring(i, 1).ToString());
+                if (!newPoint && (tmp == '.'))
+                {
+                    textAfter.Append(tmp);
+                    newPoint = true;
+                }
+                else
+                {
+                    if (char.IsDigit(tmp))
+                    {
+                        textAfter.Append(tmp);
+                    }
+                }
+
+            }
+            textBoxScale.Text = textAfter.ToString();
+        }
+    }
+}

SDK/Samples/ImportExport/CS/Import/ImportDWGForm.resx

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

SDK/Samples/ImportExport/CS/Import/ImportData.cs

@@ -0,0 +1,196 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Reflection;
+using System.IO;
+
+using Autodesk.Revit;
+using Autodesk.Revit.DB;
+using Autodesk.Revit.UI;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// Base data class which stores the basic information for import
+    /// </summary>
+    public class ImportData
+    {
+        #region Class Member Variables
+        /// <summary>
+        /// Revit command data
+        /// </summary>
+        protected ExternalCommandData m_commandData;
+        /// <summary>
+        /// Active document
+        /// </summary>
+        protected Document m_activeDoc;
+
+        /// <summary>
+        /// Directory where to import the file
+        /// </summary>
+        protected String m_importFolder;
+        /// <summary>
+        /// File Name or Prefix to be used
+        /// </summary>
+        protected String m_importFileFullName;
+
+        /// <summary>
+        /// The format to be exported
+        /// </summary>
+        protected ImportFormat m_importFormat;
+
+        /// <summary>
+        /// The filter which will be used in file saving dialog
+        /// </summary>
+        protected String m_filter;
+
+        /// <summary>
+        /// The title of importing dialog
+        /// </summary>
+        protected String m_title;
+        #endregion
+
+        #region Class Properties
+        /// <summary>
+        /// Revit command data
+        /// </summary>
+        public ExternalCommandData CommandData
+        {
+            get 
+            { 
+                return m_commandData; 
+            }
+        }
+
+        /// <summary>
+        /// File Name or Prefix to be used
+        /// </summary>
+        public String ImportFileFullName
+        {
+            get 
+            {
+                return m_importFileFullName; 
+            }
+            set 
+            {
+                m_importFileFullName = value; 
+            }
+        }  
+
+        /// <summary>
+        /// The format to be imported
+        /// </summary>
+        public ImportFormat ImportFormat
+        {
+            get 
+            { 
+                return m_importFormat; 
+            }
+            set 
+            { 
+                m_importFormat = value; 
+            }
+        }
+
+        /// <summary>
+        /// The filter which will be used in file saving dialog
+        /// </summary>
+        public String Filter
+        {
+            get 
+            { 
+                return m_filter; 
+            }
+        }
+
+        /// <summary>
+        /// Directory where to import the file
+        /// </summary>
+        public String ImportFolder
+        {
+            get
+            {
+                return m_importFolder;
+            }
+            set
+            {
+                m_importFolder = value;
+            }
+        }
+
+        /// <summary>
+        /// The title of importing dialog
+        /// </summary>
+        public String Title
+        {
+            get
+            {
+                return m_title;
+            }
+        }
+        #endregion
+
+        #region Class Member Methods
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        /// <param name="commandData">Revit command data</param>
+        /// <param name="importFormat">Format to import</param>
+        public ImportData(ExternalCommandData commandData, ImportFormat importFormat)
+        {
+            m_commandData = commandData;
+            m_activeDoc = commandData.Application.ActiveUIDocument.Document;
+            m_importFormat = importFormat;
+            m_filter = String.Empty;
+            Initialize();
+        }
+
+        /// <summary>
+        /// Initialize the variables
+        /// </summary>
+        private void Initialize()
+        {
+            //The directory into which the file will be imported
+            String dllFilePath = Assembly.GetExecutingAssembly().Location;
+            m_importFolder = Path.GetDirectoryName(dllFilePath);
+            m_importFileFullName = String.Empty;
+        }
+
+        /// <summary>
+        /// Collect the parameters and import
+        /// </summary>
+        /// <returns></returns>
+        public virtual bool Import()
+        {
+            if (m_importFileFullName == null)
+            {
+                throw new NullReferenceException();
+            }
+
+            return true;
+        }
+        #endregion
+    }
+}

SDK/Samples/ImportExport/CS/Import/ImportGBXMLData.cs

@@ -0,0 +1,73 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+using Autodesk.Revit;
+using Autodesk.Revit.DB;
+using Autodesk.Revit.UI;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// Data class which stores the information for importing GBXML format
+    /// </summary>
+    class ImportGBXMLData : ImportData
+    {
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        /// <param name="commandData">Revit command data</param>
+        /// <param name="importFormat">Format to import</param>
+        public ImportGBXMLData(ExternalCommandData commandData, ImportFormat importFormat)
+            : base(commandData, importFormat)
+        {
+            m_filter = "XML Documents (*.xml)|*.xml";
+            m_title = "Import GBXML";
+        }
+
+        /// <summary>
+        /// Collect the parameters and export
+        /// </summary>
+        /// <returns></returns>
+        public override bool Import()
+        {
+            bool imported = false;
+
+            //parameter: GBXMLImportOptions
+            GBXMLImportOptions options = new GBXMLImportOptions();
+
+            //Import
+            Transaction t = new Transaction(m_activeDoc);
+            t.SetName("Import GBXML");
+            t.Start();
+            imported = m_activeDoc.Import(m_importFileFullName, options);
+            t.Commit();
+
+            return imported;
+        }
+    }
+}
+
+

SDK/Samples/ImportExport/CS/Import/ImportImageData.cs

@@ -0,0 +1,100 @@
+
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+using Autodesk.Revit;
+using Autodesk.Revit.DB;
+using Autodesk.Revit.UI;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+   /// <summary>
+   /// Data class which stores the information for importing image format
+   /// </summary>
+   class ImportImageData : ImportData
+   {
+      /// <summary>
+      /// Constructor
+      /// </summary>
+      /// <param name="commandData">Revit command data</param>
+      /// <param name="importFormat">Format to import</param>
+      public ImportImageData(ExternalCommandData commandData, ImportFormat importFormat)
+          : base(commandData, importFormat)
+      {
+         if (OptionalFunctionalityUtils.IsPDFImportAvailable())
+            m_filter = "All Image Files (*.bmp, *.gif, *.jpg, *.jpeg, *.pdf, *.png, *.tif)|*.bmp;*.gif;*.jpg;*.jpeg;*.pdf;*.png;*.tif";
+         else
+            m_filter = "All Image Files (*.bmp, *.gif, *.jpg, *.jpeg, *.png, *.tif)|*.bmp;*.gif;*.jpg;*.jpeg;*.png;*.tif";
+
+         m_title = "Import Image";
+      }
+
+      /// <summary>
+      /// Collect the parameters and export
+      /// </summary>
+      /// <returns></returns>
+      public override bool Import()
+      {
+         using (Transaction t = new Transaction(m_activeDoc))
+         {
+            t.SetName("Import");
+            t.Start();
+
+            // Step 1: Create an ImageType 
+            //ImageTypeOptions specifies the source of the image, and how to create the ImageType.
+            // It can be used to specify:
+            //   - The image file.  Either as a local file path, or as an ExternalResourceRef
+            //   - Whether to store the local file path as an absolute path or a relative path.
+            //   - Whether to create an Import or a Link image.
+            // In addition, if the source is a PDF file, then ImageTypeOptions can be used to specify:
+            //   - which page from the PDF to use
+            //   - the resolution (in dots-per-inch) at which to rasterize the PDF
+            // For other image types the page number should be 1 (the default),
+            // and the resolution is only used to determine the size of the image.
+
+            ImageTypeOptions typeOptions = new ImageTypeOptions(m_importFileFullName, true, ImageTypeSource.Import);
+            ImageType imageType = ImageType.Create(m_activeDoc, typeOptions);
+
+            // Step 2: Create an ImageInstance, but only if the active view is able to contain images.
+            View view = CommandData.Application.ActiveUIDocument.Document.ActiveView;
+            if (ImageInstance.IsValidView(view))
+            {
+
+               // ImagePlacementOptions
+               ImagePlacementOptions placementOptions = new ImagePlacementOptions();
+               placementOptions.PlacementPoint = Autodesk.Revit.DB.BoxPlacement.TopLeft;
+               placementOptions.Location = new XYZ(1, 1, 1);
+
+               ImageInstance imageInstance = ImageInstance.Create(m_activeDoc, view, imageType.Id, placementOptions);
+            }
+
+            t.Commit();
+         }
+
+         return true;
+      }
+   }
+}

SDK/Samples/ImportExport/CS/Import/ImportInventorData.cs

@@ -0,0 +1,67 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+using Autodesk.Revit;
+using Autodesk.Revit.DB;
+using Autodesk.Revit.UI;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// Data class which stores the information for importing image format
+    /// </summary>
+    class ImportInventorData : ImportData
+    {
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        /// <param name="commandData">Revit command data</param>
+        /// <param name="importFormat">Format to import</param>
+        public ImportInventorData(ExternalCommandData commandData, ImportFormat importFormat)
+            : base(commandData, importFormat)
+        {
+            m_filter = "Autodesk Exchange Files (*.adsk)|*.adsk";
+            m_title = "Import Inventor File";
+        }
+
+        /// <summary>
+        /// Collect the parameters and import
+        /// </summary>
+        /// <returns></returns>
+        public override bool Import()
+        {
+
+            //Import	
+            Transaction t = new Transaction(m_activeDoc);
+            t.SetName("Import");
+            t.Start();
+            Document doc =m_commandData.Application.Application.OpenBuildingComponentDocument(m_importFileFullName);
+            t.Commit();
+
+            return doc == null ? false : true;
+        }
+    }
+}

SDK/Samples/ImportExport/CS/ImportExport.addin

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RevitAddIns>
+  <AddIn Type="Command">
+    <Assembly>ImportExport.dll</Assembly>
+    <ClientId>92cc84cd-963f-4d33-8cdc-e01321c0b427</ClientId>
+    <FullClassName>Revit.SDK.Samples.ImportExport.CS.Command</FullClassName>
+    <Text>Import and Export</Text>
+    <Description>Export current project to dwg, dwf(x), gbxml or fbx files and import a dwg or image file into Revit.</Description>
+    <VisibilityMode>AlwaysVisible</VisibilityMode>
+    <VendorId>ADSK</VendorId>
+    <VendorDescription>Autodesk, www.autodesk.com</VendorDescription>
+  </AddIn>
+</RevitAddIns>

SDK/Samples/ImportExport/CS/ImportExport.csproj

@@ -0,0 +1,211 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProductVersion>9.0.30729</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{3505D5A1-24CB-46C3-8077-276BC07757D9}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>Revit.SDK.Samples.ImportExport.CS</RootNamespace>
+    <AssemblyName>ImportExport</AssemblyName>
+    <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
+    <TargetFrameworkProfile />
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <DocumentationFile>bin\Debug\ImportExport.XML</DocumentationFile>
+    <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\x64\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <DocumentationFile>bin\Debug\ImportExport.XML</DocumentationFile>
+    <DebugType>full</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <ErrorReport>prompt</ErrorReport>
+    <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
+    <OutputPath>bin\x64\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <Optimize>true</Optimize>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <ErrorReport>prompt</ErrorReport>
+    <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+  </PropertyGroup>
+  <PropertyGroup>
+    <RunPostBuildEvent>OnOutputUpdated</RunPostBuildEvent>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Drawing" />
+    <Reference Include="System.Windows.Forms" />
+    <Reference Include="System.Xml" />
+    <Reference Include="System.Core">
+      <RequiredTargetFramework>3.5</RequiredTargetFramework>
+    </Reference>
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Command.cs" />
+    <Compile Include="Export\ExportIMGData.cs">
+    </Compile>
+    <Compile Include="Export\ExportIMGOptionsForm.cs">
+      <SubType>Form</SubType>
+    </Compile>
+    <Compile Include="Export\ExportIMGOptionsForm.Designer.cs">
+      <DependentUpon>ExportIMGOptionsForm.cs</DependentUpon>
+    </Compile>
+    <Compile Include="Export\ExportPDFData.cs" />
+    <Compile Include="Export\ExportPDFOptionsForm.cs">
+      <SubType>Form</SubType>
+    </Compile>
+    <Compile Include="Export\ExportPDFOptionsForm.Designer.cs">
+      <DependentUpon>ExportPDFOptionsForm.cs</DependentUpon>
+    </Compile>
+    <Compile Include="Export\ExportSATData.cs" />
+    <Compile Include="Export\ExportDXFData.cs" />
+    <Compile Include="Export\ExportDGNData.cs" />
+    <Compile Include="Export\ExportDGNOptionsForm.cs">
+      <SubType>Form</SubType>
+    </Compile>
+    <Compile Include="Export\ExportDGNOptionsForm.Designer.cs">
+      <DependentUpon>ExportDGNOptionsForm.cs</DependentUpon>
+    </Compile>
+    <Compile Include="Export\ExportFBXData.cs" />
+    <Compile Include="Export\ExportGBXMLData.cs" />
+    <Compile Include="Export\ExportDWFOptionForm.cs">
+      <SubType>Form</SubType>
+    </Compile>
+    <Compile Include="Export\ExportDWFOptionForm.Designer.cs">
+      <DependentUpon>ExportDWFOptionForm.cs</DependentUpon>
+    </Compile>
+    <Compile Include="Export\ExportDWFData.cs" />
+    <Compile Include="Export\ExportData.cs" />
+    <Compile Include="Export\ExportDataWithViews.cs" />
+    <Compile Include="Export\ExportDWGData.cs" />
+    <Compile Include="Export\ExportBaseOptionsData.cs" />
+    <Compile Include="Export\ExportBaseOptionsForm.cs">
+      <SubType>Form</SubType>
+    </Compile>
+    <Compile Include="Export\ExportBaseOptionsForm.Designer.cs">
+      <DependentUpon>ExportBaseOptionsForm.cs</DependentUpon>
+    </Compile>
+    <Compile Include="Import\ImportGBXMLData.cs" />
+    <Compile Include="Import\ImportImageData.cs" />
+    <Compile Include="Import\ImportData.cs" />
+    <Compile Include="Import\ImportDWGData.cs" />
+    <Compile Include="Import\ImportDWGForm.cs">
+      <SubType>Form</SubType>
+    </Compile>
+    <Compile Include="Import\ImportDWGForm.Designer.cs">
+      <DependentUpon>ImportDWGForm.cs</DependentUpon>
+    </Compile>
+    <Compile Include="Export\ExportWithViewsForm.cs">
+      <SubType>Form</SubType>
+    </Compile>
+    <Compile Include="Export\ExportWithViewsForm.Designer.cs">
+      <DependentUpon>ExportWithViewsForm.cs</DependentUpon>
+    </Compile>
+    <Compile Include="Import\ImportInventorData.cs" />
+    <Compile Include="MainData.cs" />
+    <Compile Include="MainForm.cs">
+      <SubType>Form</SubType>
+    </Compile>
+    <Compile Include="MainForm.Designer.cs">
+      <DependentUpon>MainForm.cs</DependentUpon>
+    </Compile>
+    <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="Export\SelectViewsData.cs" />
+    <Compile Include="Export\SelectViewsForm.cs">
+      <SubType>Form</SubType>
+    </Compile>
+    <Compile Include="Export\SelectViewsForm.Designer.cs">
+      <DependentUpon>SelectViewsForm.cs</DependentUpon>
+    </Compile>
+    <Compile Include="Properties\Resources.Designer.cs">
+      <AutoGen>True</AutoGen>
+      <DesignTime>True</DesignTime>
+      <DependentUpon>Resources.resx</DependentUpon>
+    </Compile>
+    <Compile Include="Unit.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <EmbeddedResource Include="Export\ExportDWFOptionForm.resx">
+      <SubType>Designer</SubType>
+      <DependentUpon>ExportDWFOptionForm.cs</DependentUpon>
+    </EmbeddedResource>
+    <EmbeddedResource Include="Export\ExportDGNOptionsForm.resx">
+      <SubType>Designer</SubType>
+      <DependentUpon>ExportDGNOptionsForm.cs</DependentUpon>
+    </EmbeddedResource>
+    <EmbeddedResource Include="Export\ExportIMGOptionsForm.resx">
+      <DependentUpon>ExportIMGOptionsForm.cs</DependentUpon>
+    </EmbeddedResource>
+    <EmbeddedResource Include="Export\ExportPDFOptionsForm.resx">
+      <DependentUpon>ExportPDFOptionsForm.cs</DependentUpon>
+    </EmbeddedResource>
+    <EmbeddedResource Include="Export\ExportWithViewsForm.resx">
+      <SubType>Designer</SubType>
+      <DependentUpon>ExportWithViewsForm.cs</DependentUpon>
+    </EmbeddedResource>
+    <EmbeddedResource Include="Export\ExportBaseOptionsForm.resx">
+      <SubType>Designer</SubType>
+      <DependentUpon>ExportBaseOptionsForm.cs</DependentUpon>
+    </EmbeddedResource>
+    <EmbeddedResource Include="Import\ImportDWGForm.resx">
+      <SubType>Designer</SubType>
+      <DependentUpon>ImportDWGForm.cs</DependentUpon>
+    </EmbeddedResource>
+    <EmbeddedResource Include="MainForm.resx">
+      <SubType>Designer</SubType>
+      <DependentUpon>MainForm.cs</DependentUpon>
+    </EmbeddedResource>
+    <EmbeddedResource Include="Export\SelectViewsForm.resx">
+      <SubType>Designer</SubType>
+      <DependentUpon>SelectViewsForm.cs</DependentUpon>
+    </EmbeddedResource>
+    <EmbeddedResource Include="Properties\Resources.resx">
+      <SubType>Designer</SubType>
+      <Generator>ResXFileCodeGenerator</Generator>
+      <LastGenOutput>Resources.Designer.cs</LastGenOutput>
+    </EmbeddedResource>
+  </ItemGroup>
+  <ItemGroup>
+  </ItemGroup>
+  <Import Project="$(SolutionDir)VSProps\SDKSamples.targets" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+  <PropertyGroup>
+    <PostBuildEvent>set FILEFORSAMPLEREG="$(SolutionDir)..\..\..\..\Regression\API\SDKSamples\UpdateSampleDllForRegression.pl"
+if exist %25FILEFORSAMPLEREG%25 perl %25FILEFORSAMPLEREG%25 $(ProjectExt) "$(ProjectPath)" "$(TargetPath)" "$(SolutionDir)"</PostBuildEvent>
+  </PropertyGroup>
+  <PropertyGroup>
+    <ResolveAssemblyWarnOrErrorOnTargetArchitectureMismatch>None</ResolveAssemblyWarnOrErrorOnTargetArchitectureMismatch>
+  </PropertyGroup>
+</Project>

SDK/Samples/ImportExport/CS/MainData.cs

@@ -0,0 +1,466 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.IO;
+using System.Windows.Forms;
+
+using Autodesk.Revit;
+using Autodesk.Revit.UI;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// Export formats
+    /// </summary>
+    public enum ExportFormat
+    {
+        /// <summary>
+        /// DWG format
+        /// </summary>
+        DWG,
+        /// <summary>
+        /// DXF format
+        /// </summary>
+        DXF,
+        /// <summary>
+        /// SAT format
+        /// </summary> 
+        SAT,
+        /// <summary>
+        /// DWF format
+        /// </summary>
+        DWF,
+        /// <summary>
+        /// DWFx format
+        /// </summary>
+        DWFx,
+        /// <summary>
+        /// GBXML format
+        /// </summary>
+        GBXML,
+        /// <summary>
+        /// FBX format
+        /// </summary>
+        FBX,
+        /// <summary>
+        /// DGN format
+        /// </summary>
+        DGN,
+        /// <summary>
+        /// IMG format
+        /// </summary>
+        Image,
+        /// <summary>
+        /// PDF format
+        /// </summary>
+        PDF
+   }
+
+    /// <summary>
+    /// Import formats
+    /// </summary>
+    public enum ImportFormat
+    {
+        /// <summary>
+        /// DWF format
+        /// </summary>
+        DWG,
+        /// <summary>
+        /// IMAGE format
+        /// </summary>
+        IMAGE,
+        /// <summary>
+        /// GBXML format
+        /// </summary>
+        GBXML,
+        /// <summary>
+        /// Inventor format
+        /// </summary>
+        Inventor
+    }
+
+    /// <summary>
+    /// Data class contains the external command data.
+    /// </summary>
+    public class MainData
+    {
+        // Revit command data
+        private ExternalCommandData m_commandData;
+
+        // Whether current view is a 3D view
+        private bool m_is3DView;
+
+        /// <summary>
+        /// Revit command data
+        /// </summary>
+        public ExternalCommandData CommandData
+        {
+            get
+            {
+                return m_commandData;
+            }
+        }
+
+        /// <summary>
+        /// Whether current view is a 3D view
+        /// </summary>
+        public bool Is3DView
+        {
+            get
+            {
+                return m_is3DView;
+            }
+            set
+            {
+                m_is3DView = value;
+            }
+        }
+
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        /// <param name="commandData">Revit command data</param>
+        public MainData(ExternalCommandData commandData)
+        {
+            m_commandData = commandData;
+
+            //Whether current active view is 3D view
+            if (commandData.Application.ActiveUIDocument.Document.ActiveView.ViewType == Autodesk.Revit.DB.ViewType.ThreeD)
+            {
+                m_is3DView = true;
+            }
+            else
+            {
+                m_is3DView = false;
+            }
+        }
+
+        /// <summary>
+        /// Get the format to export
+        /// </summary>
+        /// <param name="selectedFormat">Selected format in format selecting dialog</param>
+        /// <returns>The format to export</returns>
+        private static ExportFormat GetSelectedExportFormat(string selectedFormat)
+        {
+            ExportFormat format = ExportFormat.DWG;
+            switch (selectedFormat)
+            {
+                case "DWG":
+                    format = ExportFormat.DWG;
+                    break;
+                case "DXF":
+                    format = ExportFormat.DXF;
+                    break;
+                case "SAT":
+                    format = ExportFormat.SAT;
+                    break;
+                case "DWF":
+                    format = ExportFormat.DWF;
+                    break;
+                case "DWFx":
+                    format = ExportFormat.DWFx;
+                    break;
+                case "GBXML":
+                    format = ExportFormat.GBXML;
+                    break;
+                case "FBX":
+                    format = ExportFormat.FBX;
+                    break;
+                case "DGN":
+                    format = ExportFormat.DGN;
+                    break;
+                case "IMAGE":
+                    format = ExportFormat.Image;
+                    break;
+                case "PDF":
+                    format = ExportFormat.PDF;
+                    break;
+                default:
+                    break;
+            }
+
+            return format;
+        }
+
+        /// <summary>
+        /// Export according to selected format
+        /// </summary>
+        /// <param name="selectedFormat">Selected format</param>
+        public DialogResult Export(string selectedFormat)
+        {
+            ExportFormat format = GetSelectedExportFormat(selectedFormat);
+            DialogResult dialogResult = DialogResult.OK;
+
+            try
+            {
+                switch (format)
+                {
+                    case ExportFormat.DWG:
+                        ExportDWGData exportDWGData = new ExportDWGData(m_commandData, format);
+                        using (ExportWithViewsForm exportForm = new ExportWithViewsForm(exportDWGData))
+                        {
+                            dialogResult = exportForm.ShowDialog();
+                        }
+                        break;
+                    case ExportFormat.DXF:
+                        ExportDXFData exportDXFData = new ExportDXFData(m_commandData, format);
+                        using (ExportWithViewsForm exportForm = new ExportWithViewsForm(exportDXFData))
+                        {
+                            dialogResult = exportForm.ShowDialog();
+                        }
+                        break;
+                    case ExportFormat.SAT:
+                        ExportSATData exportSATData = new ExportSATData(m_commandData, format);
+                        using (ExportWithViewsForm exportForm = new ExportWithViewsForm(exportSATData))
+                        {
+                            dialogResult = exportForm.ShowDialog();
+                        }
+                        break;
+                    case ExportFormat.DWF:
+                    case ExportFormat.DWFx:
+                        ExportDWFData exportDWFData = new ExportDWFData(m_commandData, format);
+                        using (ExportWithViewsForm exportForm = new ExportWithViewsForm(exportDWFData))
+                        {
+                            dialogResult = exportForm.ShowDialog();
+                        }
+                        break;
+                    case ExportFormat.GBXML:
+                        ExportGBXMLData exportGBXMLData = new ExportGBXMLData(m_commandData, format);
+                        dialogResult = Export(exportGBXMLData);
+                        break;
+                    case ExportFormat.FBX:
+                        ExportFBXData exportFBXData = new ExportFBXData(m_commandData, format);
+                        dialogResult = Export(exportFBXData);
+                        break;
+                    case ExportFormat.DGN:
+                        ExportDGNData exportDGNData = new ExportDGNData(m_commandData, format);
+                        using (ExportWithViewsForm exportForm = new ExportWithViewsForm(exportDGNData))
+                        {
+                            dialogResult = exportForm.ShowDialog();
+                        }
+                        break;
+                    case ExportFormat.Image:
+                        ExportIMGData exportIMGdata = new ExportIMGData(m_commandData, format);
+                        using (ExportWithViewsForm exportForm = new ExportWithViewsForm(exportIMGdata))
+                        {
+                            dialogResult = DialogResult.OK;
+                        }
+                        break;
+                    case ExportFormat.PDF:
+                        ExportPDFData exportPDFData = new ExportPDFData(m_commandData, format);
+                        using (ExportWithViewsForm exportForm = new ExportWithViewsForm(exportPDFData))
+                        {
+                           dialogResult = exportForm.ShowDialog();
+                        }
+                        break;
+                    default:
+                        break;
+                }
+            }
+            catch (Exception ex)
+            {
+                String errorMessage = "Failed to export " + format + " format" + ex.ToString(); ;
+                TaskDialog.Show("Error", errorMessage, TaskDialogCommonButtons.Ok);
+            }
+
+            return dialogResult;
+        }
+
+        /// <summary>
+        /// Export
+        /// </summary>
+        /// <param name="data"></param>
+        private static DialogResult Export(ExportData data)
+        {
+            String returnFilename = String.Empty;
+            int filterIndex = -1;
+
+            DialogResult result = ShowSaveDialog(data, ref returnFilename, ref filterIndex);
+            if (result != DialogResult.Cancel)
+            {
+                data.ExportFileName = Path.GetFileName(returnFilename);
+                data.ExportFolder = Path.GetDirectoryName(returnFilename);
+                if (!data.Export())
+                {
+                    TaskDialog.Show("Export", "This project cannot be exported to " + data.ExportFileName +
+                        " in current settings.", TaskDialogCommonButtons.Ok);
+                }
+            }
+
+            return result;
+        }
+
+        /// <summary>
+        /// Show Save dialog
+        /// </summary>
+        /// <param name="exportData">Data to export</param>
+        /// <param name="returnFileName">File name will be returned</param>
+        /// <param name="filterIndex">Selected filter index will be returned</param>
+        /// <returns></returns>
+        public static DialogResult ShowSaveDialog(ExportData exportData, ref String returnFileName,
+            ref int filterIndex)
+        {
+            using (SaveFileDialog saveDialog = new SaveFileDialog())
+            {
+                saveDialog.Title = exportData.Title;
+                saveDialog.InitialDirectory = exportData.ExportFolder;
+                saveDialog.FileName = exportData.ExportFileName;
+                saveDialog.Filter = exportData.Filter;
+                saveDialog.FilterIndex = 1;
+                saveDialog.RestoreDirectory = true;
+
+                DialogResult result = saveDialog.ShowDialog();
+                if (result != DialogResult.Cancel)
+                {
+                    returnFileName = saveDialog.FileName;
+                    filterIndex = saveDialog.FilterIndex;
+                }
+
+                return result;
+            }
+        }
+
+        /// <summary>
+        /// Get the format to import
+        /// </summary>
+        /// <param name="selectedFormat">Selected format in format selecting dialog</param>
+        /// <returns>The format to import</returns>
+        private static ImportFormat GetSelectedImportFormat(string selectedFormat)
+        {
+            ImportFormat format = ImportFormat.DWG;
+            switch (selectedFormat)
+            {
+                case "DWG":
+                    format = ImportFormat.DWG;
+                    break;
+                case "IMAGE":
+                    format = ImportFormat.IMAGE;
+                    break;
+                case "GBXML":
+                    format = ImportFormat.GBXML;
+                    break;
+                case "Inventor":
+                    format = ImportFormat.Inventor;
+                    break;
+                default:
+                    break;
+            }
+
+            return format;
+        }
+
+        /// <summary>
+        /// Export according to selected format
+        /// </summary>
+        /// <param name="selectedFormat">Selected format</param>
+        /// <returns></returns>
+        public DialogResult Import(string selectedFormat)
+        {
+            DialogResult dialogResult = DialogResult.OK;
+            ImportFormat format = GetSelectedImportFormat(selectedFormat);
+
+            try
+            {
+                switch (format)
+                {
+                    case ImportFormat.DWG:
+                        ImportDWGData importDWGData = new ImportDWGData(m_commandData, format);
+                        using (ImportDWGForm importForm = new ImportDWGForm(importDWGData))
+                        {
+                            dialogResult = importForm.ShowDialog();
+                        }
+                        break;
+                    case ImportFormat.IMAGE:
+                        ImportImageData importIMAGEData = new ImportImageData(m_commandData, format);
+                        dialogResult = Import(importIMAGEData);
+                        break;
+                    case ImportFormat.GBXML:
+                        ImportGBXMLData importGBXMLData = new ImportGBXMLData(m_commandData, format);
+                        dialogResult = Import(importGBXMLData);
+                        break;
+                    case ImportFormat.Inventor:
+                        ImportInventorData importInventorData = new ImportInventorData(m_commandData, format);
+                        dialogResult = Import(importInventorData);
+                        break;
+                    default:
+                        break;
+                }
+            }
+            catch (Exception)
+            {
+                String errorMessage = "Failed to import " + format + " format";
+                TaskDialog.Show("Error", errorMessage, TaskDialogCommonButtons.Ok);
+            }
+
+            return dialogResult;
+        }
+
+        /// <summary>
+        /// Import
+        /// </summary>
+        /// <param name="data"></param>
+        private static DialogResult Import(ImportData data)
+        {
+            String returnFilename = String.Empty;
+            DialogResult result = ShowOpenDialog(data, ref returnFilename);
+            if (result != DialogResult.Cancel)
+            {
+                data.ImportFileFullName = returnFilename;
+                if (!data.Import())
+                {
+                    TaskDialog.Show("Import", "Cannot import " + Path.GetFileName(data.ImportFileFullName) +
+                        " in current settings.", TaskDialogCommonButtons.Ok);
+                }
+            }
+
+            return result;
+        }
+
+        /// <summary>
+        /// Show Open File dialog
+        /// </summary>
+        /// <param name="importData">Data to import</param>
+        /// <param name="returnFileName">File name will be returned</param>
+        /// <returns>Dialog result</returns>
+        public static DialogResult ShowOpenDialog(ImportData importData, ref String returnFileName)
+        {
+            using (OpenFileDialog importDialog = new OpenFileDialog())
+            {
+                importDialog.Title = importData.Title;
+                importDialog.InitialDirectory = importData.ImportFolder;
+                importDialog.Filter = importData.Filter;
+                importDialog.RestoreDirectory = true;
+
+                DialogResult result = importDialog.ShowDialog();
+                if (result != DialogResult.Cancel)
+                {
+                    returnFileName = importDialog.FileName;
+                }
+
+                return result;
+            }
+        }
+    }
+}

SDK/Samples/ImportExport/CS/MainForm.Designer.cs

@@ -0,0 +1,177 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// Provide a dialog which lets user choose the operation(export or import)
+    /// </summary>
+    partial class MainForm
+    {
+        /// <summary>
+        /// Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+
+        /// <summary>
+        /// Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Windows Form Designer generated code
+
+        /// <summary>
+        /// Required method for Designer support - do not modify
+        /// the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            this.buttonOK = new System.Windows.Forms.Button();
+            this.buttonCancel = new System.Windows.Forms.Button();
+            this.groupBoxOperation = new System.Windows.Forms.GroupBox();
+            this.comboBoxImport = new System.Windows.Forms.ComboBox();
+            this.comboBoxExport = new System.Windows.Forms.ComboBox();
+            this.radioButtonImport = new System.Windows.Forms.RadioButton();
+            this.radioButtonExport = new System.Windows.Forms.RadioButton();
+            this.groupBoxOperation.SuspendLayout();
+            this.SuspendLayout();
+            // 
+            // buttonOK
+            // 
+            this.buttonOK.Location = new System.Drawing.Point(103, 112);
+            this.buttonOK.Name = "buttonOK";
+            this.buttonOK.Size = new System.Drawing.Size(75, 23);
+            this.buttonOK.TabIndex = 0;
+            this.buttonOK.Text = "&OK";
+            this.buttonOK.UseVisualStyleBackColor = true;
+            this.buttonOK.Click += new System.EventHandler(this.buttonOK_Click);
+            // 
+            // buttonCancel
+            // 
+            this.buttonCancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
+            this.buttonCancel.Location = new System.Drawing.Point(188, 112);
+            this.buttonCancel.Name = "buttonCancel";
+            this.buttonCancel.Size = new System.Drawing.Size(75, 23);
+            this.buttonCancel.TabIndex = 1;
+            this.buttonCancel.Text = "&Cancel";
+            this.buttonCancel.UseVisualStyleBackColor = true;
+            this.buttonCancel.Click += new System.EventHandler(this.buttonCancel_Click);
+            // 
+            // groupBoxOperation
+            // 
+            this.groupBoxOperation.Controls.Add(this.comboBoxImport);
+            this.groupBoxOperation.Controls.Add(this.comboBoxExport);
+            this.groupBoxOperation.Controls.Add(this.radioButtonImport);
+            this.groupBoxOperation.Controls.Add(this.radioButtonExport);
+            this.groupBoxOperation.Location = new System.Drawing.Point(12, 12);
+            this.groupBoxOperation.Name = "groupBoxOperation";
+            this.groupBoxOperation.Size = new System.Drawing.Size(251, 81);
+            this.groupBoxOperation.TabIndex = 2;
+            this.groupBoxOperation.TabStop = false;
+            this.groupBoxOperation.Text = "Operation";
+            // 
+            // comboBoxImport
+            // 
+            this.comboBoxImport.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
+            this.comboBoxImport.FormattingEnabled = true;
+            this.comboBoxImport.Location = new System.Drawing.Point(72, 51);
+            this.comboBoxImport.Name = "comboBoxImport";
+            this.comboBoxImport.Size = new System.Drawing.Size(161, 21);
+            this.comboBoxImport.TabIndex = 2;
+            // 
+            // comboBoxExport
+            // 
+            this.comboBoxExport.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
+            this.comboBoxExport.FormattingEnabled = true;
+            this.comboBoxExport.Location = new System.Drawing.Point(72, 19);
+            this.comboBoxExport.Name = "comboBoxExport";
+            this.comboBoxExport.Size = new System.Drawing.Size(161, 21);
+            this.comboBoxExport.TabIndex = 2;
+            // 
+            // radioButtonImport
+            // 
+            this.radioButtonImport.AutoSize = true;
+            this.radioButtonImport.Location = new System.Drawing.Point(7, 52);
+            this.radioButtonImport.Name = "radioButtonImport";
+            this.radioButtonImport.Size = new System.Drawing.Size(54, 17);
+            this.radioButtonImport.TabIndex = 1;
+            this.radioButtonImport.TabStop = true;
+            this.radioButtonImport.Text = "Import";
+            this.radioButtonImport.UseVisualStyleBackColor = true;
+            // 
+            // radioButtonExport
+            // 
+            this.radioButtonExport.AutoSize = true;
+            this.radioButtonExport.Checked = true;
+            this.radioButtonExport.Location = new System.Drawing.Point(7, 21);
+            this.radioButtonExport.Name = "radioButtonExport";
+            this.radioButtonExport.Size = new System.Drawing.Size(58, 17);
+            this.radioButtonExport.TabIndex = 0;
+            this.radioButtonExport.TabStop = true;
+            this.radioButtonExport.Text = "Export ";
+            this.radioButtonExport.UseVisualStyleBackColor = true;
+            this.radioButtonExport.CheckedChanged += new System.EventHandler(this.radioButtonExport_CheckedChanged);
+            // 
+            // MainForm
+            // 
+            this.AcceptButton = this.buttonOK;
+            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.CancelButton = this.buttonCancel;
+            this.ClientSize = new System.Drawing.Size(278, 145);
+            this.Controls.Add(this.groupBoxOperation);
+            this.Controls.Add(this.buttonCancel);
+            this.Controls.Add(this.buttonOK);
+            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
+            this.MaximizeBox = false;
+            this.MinimizeBox = false;
+            this.Name = "MainForm";
+            this.ShowIcon = false;
+            this.ShowInTaskbar = false;
+            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
+            this.Text = "Export/Import";
+            this.groupBoxOperation.ResumeLayout(false);
+            this.groupBoxOperation.PerformLayout();
+            this.ResumeLayout(false);
+
+        }
+
+        #endregion
+
+        private System.Windows.Forms.Button buttonOK;
+        private System.Windows.Forms.Button buttonCancel;
+        private System.Windows.Forms.GroupBox groupBoxOperation;
+        private System.Windows.Forms.RadioButton radioButtonImport;
+        private System.Windows.Forms.RadioButton radioButtonExport;
+        private System.Windows.Forms.ComboBox comboBoxImport;
+        private System.Windows.Forms.ComboBox comboBoxExport;
+    }
+}

SDK/Samples/ImportExport/CS/MainForm.cs

@@ -0,0 +1,131 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Text;
+using System.Windows.Forms;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// Provide a dialog which lets user choose the operation(export or import)
+    /// </summary>
+    public partial class MainForm : System.Windows.Forms.Form
+    {
+        /// <summary>
+        /// Data class
+        /// </summary>
+        MainData m_mainData;
+
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        /// <param name="mainData"></param>
+        public MainForm(MainData mainData)
+        {
+            m_mainData = mainData;
+            InitializeComponent();
+            radioButtonExport.Checked = true;
+            comboBoxExport.Enabled = true;
+            comboBoxImport.Enabled = false;
+            //Append formats to be exported or imported
+            InitializeFormats();
+        }
+
+        /// <summary>
+        /// Append formats to be exported or imported
+        /// </summary>
+        private void InitializeFormats()
+        {
+            // Append formats to be exported
+            comboBoxExport.Items.Add("DWG");
+            comboBoxExport.Items.Add("DXF");
+            comboBoxExport.Items.Add("SAT");
+            comboBoxExport.Items.Add("DWF");
+            comboBoxExport.Items.Add("DWFx");
+            comboBoxExport.Items.Add("GBXML");
+            comboBoxExport.Items.Add("DGN");
+            comboBoxExport.Items.Add("PDF");
+            if (m_mainData.Is3DView)
+            {
+                comboBoxExport.Items.Add("FBX");
+            }
+            comboBoxExport.Items.Add("IMAGE");
+            comboBoxExport.SelectedIndex = 0;
+
+            // Append formats to be imported
+            comboBoxImport.Items.Add("DWG");
+            if (!m_mainData.Is3DView)
+            {
+                comboBoxImport.Items.Add("IMAGE");
+            }
+
+            if (m_mainData.CommandData.Application.Application.Product == Autodesk.Revit.ApplicationServices.ProductType.MEP)
+            {
+                comboBoxImport.Items.Add("GBXML");
+            }
+            comboBoxImport.Items.Add("Inventor");
+            
+            comboBoxImport.SelectedIndex = 0;
+        }
+
+        /// <summary>
+        /// Show the export/import dialog
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        private void buttonOK_Click(object sender, EventArgs e)
+        {
+            String selectedFormat = String.Empty;
+            DialogResult result = DialogResult.OK;
+
+            if (radioButtonExport.Checked == true)
+            {
+                selectedFormat = comboBoxExport.SelectedItem.ToString();
+                result = m_mainData.Export(selectedFormat);
+            }
+            else
+            {
+                selectedFormat = comboBoxImport.SelectedItem.ToString();
+                result = m_mainData.Import(selectedFormat);
+            }
+
+            this.DialogResult = (result != DialogResult.Cancel ? DialogResult.OK : DialogResult.None);
+        }
+
+        private void radioButtonExport_CheckedChanged(object sender, EventArgs e)
+        {
+            comboBoxImport.Enabled = !radioButtonExport.Checked;
+            comboBoxExport.Enabled = radioButtonExport.Checked;
+        }
+
+        private void buttonCancel_Click(object sender, EventArgs e)
+        {
+            this.Close();
+        }
+      
+    }
+}

SDK/Samples/ImportExport/CS/MainForm.resx

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

SDK/Samples/ImportExport/CS/Properties/AssemblyInfo.cs

@@ -0,0 +1,57 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+// 
+
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("ImportExport")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("ImportExport")]
+[assembly: AssemblyCopyright("Copyright © Autodesk, Inc. 2009")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible 
+// to COM components.  If you need to access a type in this assembly from 
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+// The following GUID is for the ID of the typelib if this project is exposed to COM
+[assembly: Guid("17637b51-499c-47ad-a41c-afba4811f207")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Revision and Build Numbers 
+// by using the '*' as shown below:
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]

SDK/Samples/ImportExport/CS/Properties/Resources.Designer.cs

@@ -0,0 +1,135 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by a tool.
+//     Runtime Version:4.0.30319.42000
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+namespace Revit.SDK.Samples.ImportExport.CS.Properties {
+    using System;
+    
+    
+    /// <summary>
+    ///   A strongly-typed resource class, for looking up localized strings, etc.
+    /// </summary>
+    // This class was auto-generated by the StronglyTypedResourceBuilder
+    // class via a tool like ResGen or Visual Studio.
+    // To add or remove a member, edit your .ResX file then rerun ResGen
+    // with the /str option, or rebuild your VS project.
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "4.0.0.0")]
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+    internal class Resources {
+        
+        private static global::System.Resources.ResourceManager resourceMan;
+        
+        private static global::System.Globalization.CultureInfo resourceCulture;
+        
+        [global::System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
+        internal Resources() {
+        }
+        
+        /// <summary>
+        ///   Returns the cached ResourceManager instance used by this class.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Resources.ResourceManager ResourceManager {
+            get {
+                if (object.ReferenceEquals(resourceMan, null)) {
+                    global::System.Resources.ResourceManager temp = new global::System.Resources.ResourceManager("Revit.SDK.Samples.ImportExport.CS.Properties.Resources", typeof(Resources).Assembly);
+                    resourceMan = temp;
+                }
+                return resourceMan;
+            }
+        }
+        
+        /// <summary>
+        ///   Overrides the current thread's CurrentUICulture property for all
+        ///   resource lookups using this strongly typed resource class.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Globalization.CultureInfo Culture {
+            get {
+                return resourceCulture;
+            }
+            set {
+                resourceCulture = value;
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to cm.
+        /// </summary>
+        internal static string DUT_CENTIMETERS {
+            get {
+                return ResourceManager.GetString("DUT_CENTIMETERS", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to &apos;.
+        /// </summary>
+        internal static string DUT_DECIMAL_FEET {
+            get {
+                return ResourceManager.GetString("DUT_DECIMAL_FEET", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to &quot;.
+        /// </summary>
+        internal static string DUT_DECIMAL_INCHES {
+            get {
+                return ResourceManager.GetString("DUT_DECIMAL_INCHES", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to &apos;.
+        /// </summary>
+        internal static string DUT_FEET_FRACTIONAL_INCHES {
+            get {
+                return ResourceManager.GetString("DUT_FEET_FRACTIONAL_INCHES", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to &quot;.
+        /// </summary>
+        internal static string DUT_FRACTIONAL_INCHES {
+            get {
+                return ResourceManager.GetString("DUT_FRACTIONAL_INCHES", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to m.
+        /// </summary>
+        internal static string DUT_METERS {
+            get {
+                return ResourceManager.GetString("DUT_METERS", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to m.
+        /// </summary>
+        internal static string DUT_METERS_CENTIMETERS {
+            get {
+                return ResourceManager.GetString("DUT_METERS_CENTIMETERS", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to mm.
+        /// </summary>
+        internal static string DUT_MILLIMETERS {
+            get {
+                return ResourceManager.GetString("DUT_MILLIMETERS", resourceCulture);
+            }
+        }
+    }
+}

SDK/Samples/ImportExport/CS/Properties/Resources.resx

@@ -0,0 +1,144 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <data name="DUT_CENTIMETERS" xml:space="preserve">
+    <value>cm</value>
+  </data>
+  <data name="DUT_DECIMAL_FEET" xml:space="preserve">
+    <value>'</value>
+  </data>
+  <data name="DUT_DECIMAL_INCHES" xml:space="preserve">
+    <value>"</value>
+  </data>
+  <data name="DUT_FEET_FRACTIONAL_INCHES" xml:space="preserve">
+    <value>'</value>
+  </data>
+  <data name="DUT_FRACTIONAL_INCHES" xml:space="preserve">
+    <value>"</value>
+  </data>
+  <data name="DUT_METERS" xml:space="preserve">
+    <value>m</value>
+  </data>
+  <data name="DUT_METERS_CENTIMETERS" xml:space="preserve">
+    <value>m</value>
+  </data>
+  <data name="DUT_MILLIMETERS" xml:space="preserve">
+    <value>mm</value>
+  </data>
+</root>

SDK/Samples/ImportExport/CS/ReadMe_ImportExport.rtf

@@ -0,0 +1,412 @@
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+\widowctrl\ftnbj\aenddoc\trackmoves0\trackformatting1\donotembedsysfont0\relyonvml0\donotembedlingdata1\grfdocevents0\validatexml0\showplaceholdtext0\ignoremixedcontent0\saveinvalidxml0\showxmlerrors0\horzdoc\dghspace120\dgvspace120\dghorigin1701
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+\pnlcrm\pnstart1\pnindent720\pnhang {\pntxtb (}{\pntxta )}}\pard\plain \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 \rtlch\fcs1 \af0\afs22\alang1025 \ltrch\fcs0 
+\fs22\lang1033\langfe2052\loch\af31506\hich\af31506\dbch\af31505\cgrid\langnp1033\langfenp2052 {\rtlch\fcs1 \ab\af1\afs20 \ltrch\fcs0 \b\f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 Application:}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  ImportExport\line }{\rtlch\fcs1 \ab\af1\afs20 \ltrch\fcs0 \b\f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 Revit Platform:}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 
+\hich\af1\dbch\af31505\loch\f1  All\line }{\rtlch\fcs1 \ab\af1\afs20 \ltrch\fcs0 \b\f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 Revit Version:}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  2011.0
+\line }{\rtlch\fcs1 \ab\af1\afs20 \ltrch\fcs0 \b\f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 First Released For:}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  2008.0\line }{\rtlch\fcs1 \ab\af1\afs20 
+\ltrch\fcs0 \b\f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 Programming Language:}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  C#\line }{\rtlch\fcs1 \ab\af1\afs20 \ltrch\fcs0 
+\b\f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 Skill Level:}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  High\line }{\rtlch\fcs1 \ab\af1\afs20 \ltrch\fcs0 \b\f1\fs20\insrsid6581781 
+\hich\af1\dbch\af31505\loch\f1 Category:}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  Data Exchange\line }{\rtlch\fcs1 \ab\af1\afs20 \ltrch\fcs0 \b\f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 Type:}
+{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  ExternalCommand\line \line }{\rtlch\fcs1 \ab\af1\afs20 \ltrch\fcs0 \b\f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 Subject:}{\rtlch\fcs1 \af1\afs20 
+\ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  Import and Export data.\line }{\rtlch\fcs1 \ab\af1\afs20 \ltrch\fcs0 \b\f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 Summary:}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  \line This sample shows how to export current project to dwg, }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \fs20\loch\af1\hich\af1\dbch\af13\insrsid11021988 \hich\af1\dbch\af13\loch\f1 sat,dxf,}{\rtlch\fcs1 
+\af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid11021988 \hich\af1\dbch\af31505\loch\f1  }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 dwf(x), gbxml, fbx, dgn}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\f1\fs20\insrsid7941864 \hich\af1\dbch\af31505\loch\f1 , pdf}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid7222648 \hich\af1\dbch\af31505\loch\f1  or}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\fs20\loch\af1\hich\af1\dbch\af13\insrsid11021988\charrsid11021988 \hich\af1\dbch\af13\loch\f1  }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \fs20\loch\af1\hich\af1\dbch\af13\insrsid11021988 \hich\af1\dbch\af13\loch\f1 image}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  files and how to import a dwg, image, GBXML or }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 Inventor }{\rtlch\fcs1 
+\af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 file into Revit.}{\rtlch\fcs1 \ai\af0\afs20 \ltrch\fcs0 \i\f0\fs20\insrsid6581781 
+\par }{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }{\rtlch\fcs1 \ab\af1\afs20 \ltrch\fcs0 \b\f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 Classes:}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  
+\par }\pard \ltrpar\ql \fi180\li180\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin180\itap0\pararsid6581781 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781\charrsid6581781 \hich\af1\dbch\af31505\loch\f1 
+Autodesk.Revit.UI.IExternalCommand}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 
+\par }\pard \ltrpar\ql \fi180\li180\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin180\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781\charrsid6581781 \hich\af1\dbch\af31505\loch\f1 
+Autodesk.Revit.DB.GBXMLExportOptions }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 
+\par \hich\af1\dbch\af31505\loch\f1 Autodesk.Revit.DB.DWFExportOptions
+\par \hich\af1\dbch\af31505\loch\f1 Autodesk.Revit.DB.DWFXExportOptions
+\par \hich\af1\dbch\af31505\loch\f1 Autodesk.Revit.DB.DWGExportOptions
+\par \hich\af1\dbch\af31505\loch\f1 Autodesk.Revit.DB.FBXExportOptions
+\par \hich\af1\dbch\af31505\loch\f1 Autodesk.Revit.DB.DGNExportOptions
+\par \hich\af1\dbch\af31505\loch\f1 Autodesk.Revit.DB.DWGImportOptions
+\par \hich\af1\dbch\af31505\loch\f1 Autodesk.Revit.DB.ImageImportOptions
+\par }\pard \ltrpar\ql \fi180\li180\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin180\itap0\pararsid16205040 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid16205040 \hich\af1\dbch\af31505\loch\f1 Autodesk.Revit.DB.PDFExport}{
+\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid16205040 \hich\af1\dbch\af31505\loch\f1 Options}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid16205040 
+\par }\pard \ltrpar\ql \fi180\li180\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin180\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 Autodesk.Revit.DB.GBXMLImportOptions
+\par \hich\af1\dbch\af31505\loch\f1 Autodesk.Revit.DB.InventorImportOptions}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \fs20\lang1036\langfe2052\loch\af1\hich\af1\dbch\af13\langnp1036\insrsid6581781 
+\par }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \fs20\lang1036\langfe2052\loch\af1\hich\af1\dbch\af13\langnp1036\insrsid11350510 \hich\af1\dbch\af13\loch\f1 Autodesk.Revit.DB.}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\f1\fs20\lang1036\langfe2052\langnp1036\insrsid11350510\charrsid11350510 \hich\af1\dbch\af31505\loch\f1 DXFExportOptions}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \fs20\lang1036\langfe2052\loch\af1\hich\af1\dbch\af13\langnp1036\insrsid11350510 
+\par \hich\af1\dbch\af13\loch\f1 Autodesk.Revit.}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid11350510\charrsid11350510 \hich\af1\dbch\af31505\loch\f1 DB.SATExportOptions}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\fs20\lang1036\langfe2052\loch\af1\hich\af1\dbch\af13\langnp1036\insrsid11350510 
+\par }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \fs20\lang1036\langfe2052\loch\af1\hich\af1\dbch\af13\langnp1036\insrsid12416364 \hich\af1\dbch\af13\loch\f1 Au\hich\af1\dbch\af13\loch\f1 todesk.Revit.}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\fs20\lang1036\langfe2052\loch\af1\hich\af1\dbch\af13\langnp1036\insrsid12416364\charrsid12416364 \hich\af1\dbch\af13\loch\f1 DB.ImageExportOptions}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\fs20\lang1036\langfe2052\loch\af1\hich\af1\dbch\af13\langnp1036\insrsid11350510\charrsid11350510 
+\par }{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 {\rtlch\fcs1 \ab\af1\afs20 \ltrch\fcs0 \b\f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 Project Files:}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 
+\hich\af1\dbch\af31505\loch\f1  }{\rtlch\fcs1 \ai\af1\afs20 \ltrch\fcs0 \i\f1\fs20\insrsid6581781 
+\par }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 Command.cs}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 
+It contains the class Command which implements interface IExternalCommand}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 .
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 {\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 MainData.cs}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 Data}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  class contains the external command data}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 .
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 {\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 MainForm.cs}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 
+It contains a dialog which lets user choose the operation and the format}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 .}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 
+\fs20\lang1036\langfe2052\loch\af0\hich\af0\dbch\af13\langnp1036\insrsid6581781 
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0\pararsid402269 {\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \fs20\loch\af0\hich\af0\dbch\af13\insrsid402269 
+\par }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid402269\charrsid9060567 \hich\af1\dbch\af31505\loch\f1 ExportBaseOptionsData.cs
+\par }\pard \ltrpar\ql \li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0\pararsid402269 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid402269 \hich\af1\dbch\af31505\loch\f1 Base data class }{\rtlch\fcs1 \af1\afs20 
+\ltrch\fcs0 \fs20\lang1036\langfe2052\loch\af1\hich\af1\dbch\af13\langnp1036\insrsid402269 \hich\af1\dbch\af13\loch\f1 for }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid402269 \hich\af1\dbch\af31505\loch\f1 
+which stores the basic information for }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \fs20\lang1036\langfe2052\loch\af1\hich\af1\dbch\af13\langnp1036\insrsid9177064 \hich\af1\dbch\af13\loch\f1 DWG}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\fs20\lang1036\langfe2052\loch\af1\hich\af1\dbch\af13\langnp1036\insrsid11037556 ,}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \fs20\lang1036\langfe2052\loch\af1\hich\af1\dbch\af13\langnp1036\insrsid9177064 \hich\af1\dbch\af13\loch\f1  DXF}{\rtlch\fcs1 
+\af1\afs20 \ltrch\fcs0 \fs20\lang1036\langfe2052\loch\af1\hich\af1\dbch\af13\langnp1036\insrsid402269 \hich\af1\dbch\af13\loch\f1  }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid402269 \hich\af1\dbch\af31505\loch\f1 
+export}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\lang1036\langfe2052\langnp1036\insrsid402269 .
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0\pararsid402269 {\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \fs20\loch\af0\hich\af0\dbch\af13\insrsid402269\charrsid402269 
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid9060567\charrsid464896 \hich\af1\dbch\af31505\loch\f1 ExportBaseOptionsForm.cs}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\f1\fs20\insrsid6581781\charrsid464896 
+\par }\pard \ltrpar\ql \fi390\li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0\pararsid8718733 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid9060567\charrsid464896 \hich\af1\dbch\af31505\loch\f1 
+It contains a dialog which provides the options of common information for }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid9649500 \hich\af1\dbch\af31505\loch\f1 D}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \fs20\loch\af1\hich\af1\dbch\af13\insrsid9649500 
+\hich\af1\dbch\af13\loch\f1 WG}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid5520645\charrsid464896 \hich\af1\dbch\af31505\loch\f1 , }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \fs20\loch\af1\hich\af1\dbch\af13\insrsid9649500 \hich\af1\dbch\af13\loch\f1 
+DXF}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid5520645\charrsid464896 \hich\af1\dbch\af31505\loch\f1  }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid9060567\charrsid464896 \hich\af1\dbch\af31505\loch\f1 exporting view related}{\rtlch\fcs1 
+\af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid8718733\charrsid464896 .}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid9060567\charrsid464896 \hich\af1\dbch\af31505\loch\f1  \tab 
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0\pararsid464896 {\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \fs20\loch\af0\hich\af0\dbch\af13\insrsid464896 
+\par }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid464896\charrsid9177064 \hich\af1\dbch\af31505\loch\f1 ExportDXFData.cs
+\par }\pard \ltrpar\ql \li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0\pararsid464896 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid464896\charrsid9177064 \hich\af1\dbch\af31505\loch\f1 Data}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\f1\fs20\insrsid464896 \hich\af1\dbch\af31505\loch\f1  class }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid464896\charrsid9177064 \hich\af1\dbch\af31505\loch\f1 which stores the main information for exporting dxf format.
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0\pararsid464896 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid464896\charrsid9177064 
+\par }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid9177064\charrsid9177064 \hich\af1\dbch\af31505\loch\f1 ExportDXFOptionsForm.cs}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \fs20\loch\af1\hich\af1\dbch\af13\insrsid464896 
+\par }\pard \ltrpar\ql \fi390\li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0\pararsid9177064 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \fs20\loch\af1\hich\af1\dbch\af13\insrsid9177064\charrsid9177064 \hich\af1\dbch\af13\loch\f1 Derive}{\rtlch\fcs1 
+\af1\afs20 \ltrch\fcs0 \fs20\loch\af1\hich\af1\dbch\af13\insrsid9177064 \hich\af1\dbch\af13\loch\f1  from the class }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid9177064\charrsid464896 \hich\af1\dbch\af31505\loch\f1 ExportBaseOptionsForm}{
+\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \fs20\loch\af1\hich\af1\dbch\af13\insrsid9177064 .
+\par }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \fs20\loch\af1\hich\af1\dbch\af13\insrsid9177064\charrsid9177064 
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0\pararsid464896 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid464896\charrsid9177064 \hich\af1\dbch\af31505\loch\f1 ExportSATData.cs
+\par }\pard \ltrpar\ql \li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0\pararsid464896 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid464896\charrsid9177064 \hich\af1\dbch\af31505\loch\f1 Data}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\f1\fs20\insrsid464896 \hich\af1\dbch\af31505\loch\f1  class }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid464896\charrsid9177064 \hich\af1\dbch\af31505\loch\f1 which stores the main information for exporting sat format.}{\rtlch\fcs1 \af1\afs20 
+\ltrch\fcs0 \fs20\loch\af1\hich\af1\dbch\af13\insrsid464896 
+\par }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \fs20\loch\af1\hich\af1\dbch\af13\insrsid4618596\charrsid4618596 
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0\pararsid464896 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid4618596\charrsid4618596 \hich\af1\dbch\af31505\loch\f1 ExportIMGData.cs}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\f1\fs20\insrsid464896\charrsid4618596 
+\par }\pard \ltrpar\ql \li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0\pararsid4618596 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid4618596\charrsid9177064 \hich\af1\dbch\af31505\loch\f1 Data}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\f1\fs20\insrsid4618596 \hich\af1\dbch\af31505\loch\f1  class }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid4618596\charrsid9177064 \hich\af1\dbch\af31505\loch\f1 which stores the main information for exporting }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\fs20\loch\af1\hich\af1\dbch\af13\insrsid4618596 \hich\af1\dbch\af13\loch\f1 image}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid4618596\charrsid9177064 \hich\af1\dbch\af31505\loch\f1  format.}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\f1\fs20\insrsid4618596 
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0\pararsid12479529 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid12479529 
+\par \hich\af1\dbch\af31505\loch\f1 ExportPDFData.cs
+\par }\pard \ltrpar\ql \li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0\pararsid12479529 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid12479529 \hich\af1\dbch\af31505\loch\f1     }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\f1\fs20\insrsid12479529\charrsid9177064 \hich\af1\dbch\af31505\loch\f1 Data}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid12479529 \hich\af1\dbch\af31505\loch\f1  class }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid12479529\charrsid9177064 
+\hich\af1\dbch\af31505\loch\f1 which stores the main information for exporting }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \fs20\loch\af1\hich\af1\dbch\af13\insrsid12479529 \hich\af1\dbch\af13\loch\f1 pdf}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\f1\fs20\insrsid12479529\charrsid9177064 \hich\af1\dbch\af31505\loch\f1  format.}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid12479529\charrsid12479529 
+\par }\pard \ltrpar\ql \fi390\li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0\pararsid8718733 {\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \fs20\loch\af0\hich\af0\dbch\af13\insrsid464896 
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0\pararsid10117956 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid10117956\charrsid10117956 \hich\af1\dbch\af31505\loch\f1 ExportIMGOptionsForm.cs}{\rtlch\fcs1 \af1\afs20 
+\ltrch\fcs0 \f1\fs20\insrsid4618596\charrsid10117956 
+\par }\pard \ltrpar\ql \fi390\li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0\pararsid14632643 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid604373\charrsid464896 \hich\af1\dbch\af31505\loch\f1 It \hich\af1\dbch\af31505\loch\f1 
+contains a dialog which provides the options of common information for}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \fs20\loch\af1\hich\af1\dbch\af13\insrsid4538211 \hich\af1\dbch\af13\loch\f1  image}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\f1\fs20\insrsid604373\charrsid464896 \hich\af1\dbch\af31505\loch\f1  exporting view related.}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \fs20\loch\af1\hich\af1\dbch\af13\insrsid4663088 
+\par }{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \fs20\loch\af0\hich\af0\dbch\af13\insrsid14632643\charrsid14632643 
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 ExportData.cs}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 
+Base data class which stores the basic information for export}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 .
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 {\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 ExportDataWithViews.cs}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 
+Base data class which stores the basic information for exporting view related formats}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 .
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 {\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 ExportWithViewsForm.cs}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 
+It contains a dialog which provides the options of common information for exporting view related formats}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 .
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 {\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 ExportDWGData.cs}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 Data}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  class }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 which stor\hich\af1\dbch\af31505\loch\f1 
+es the main information for exporting dwg format}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 .
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 {\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 ExportDWGOptionsData.cs}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 Data}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  class }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 which stores information of lower priority for exporting dwg format}{
+\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 .}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 {\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 ExportDWGOptionsForm.cs}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \fi390\li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0\pararsid2565916 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \fs20\loch\af1\hich\af1\dbch\af13\insrsid2565916\charrsid9177064 \hich\af1\dbch\af13\loch\f1 Derive}{\rtlch\fcs1 
+\af1\afs20 \ltrch\fcs0 \fs20\loch\af1\hich\af1\dbch\af13\insrsid2565916 \hich\af1\dbch\af13\loch\f1  from the class }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid2565916\charrsid464896 \hich\af1\dbch\af31505\loch\f1 ExportBaseOptionsForm}{
+\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \fs20\loch\af1\hich\af1\dbch\af13\insrsid2565916 .
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 {\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid9848552 \hich\af1\dbch\af31505\loch\f1 Export}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 DWFData.cs}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 
+\f0\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 Data class wh\hich\af1\dbch\af31505\loch\f1 
+ich stores the information for exporting DWF(x) format}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 .
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 {\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid9848552 \hich\af1\dbch\af31505\loch\f1 Export}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 DWFOptionForm.cs}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 
+\f0\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0\pararsid9848552 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 
+It contains a dialog which provides the options of lower priority information for exporting 2D DWF(x) format}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid9848552\charrsid9848552 
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 ExportFBXData.cs}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 
+Data class which stores the information for exporting fbx format}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 .
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 {\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 
+\par }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 ExportGBXMLData.cs}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 
+Data class which stores the information for exporting gbxml format}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 .
+\par 
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 ExportDGNData.cs
+\par }\pard \ltrpar\ql \li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 
+Data class which stores the information for exporting dgn format}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 .
+\par 
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 ExportDGNOptionsF\hich\af1\dbch\af31505\loch\f1 orm.cs
+\par }\pard \ltrpar\ql \li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 
+It contains a dialog which provides the options for exporting dgn format}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 .}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par 
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 SelectViewsData.cs}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 Data}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  class}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  which stores information of views for export}{\rtlch\fcs1 \af0\afs20 
+\ltrch\fcs0 \f0\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 .
+\par }{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 SelectViewsForm.cs}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 
+It contains a dialog which lets users choose views to export.}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 {\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 ImportData.cs}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 B\hich\af1\dbch\af31505\loch\f1 
+ase data class which stores the basic information for import}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 .
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 {\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 
+\par }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 ImportDWGData.cs}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 Data}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  class}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  which stores the information for importing dwg format}{\rtlch\fcs1 
+\af0\afs20 \ltrch\fcs0 \f0\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 .}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 {\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 ImportDWGForm.cs}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 It }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 contains a dialog which provides the options of importing dwg format}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 .}{
+\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 {\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 ImportImageData.cs}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 Data}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  class}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  which stores the information for importing image format}{\rtlch\fcs1 
+\af0\afs20 \ltrch\fcs0 \f0\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 .
+\par 
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 ImportGBXMLData.cs
+\par }\pard \ltrpar\ql \li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 Data}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  class}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  which stores the information for importing GBXML format}{\rtlch\fcs1 
+\af0\afs20 \ltrch\fcs0 \f0\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 .}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par 
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 ImportInventorData.cs
+\par }\pard \ltrpar\ql \li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 Data}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  class}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  which stores the information for importing Inventor format}{
+\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 .}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par 
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 {\rtlch\fcs1 \ab\af0\afs20 \ltrch\fcs0 \b\f0\fs20\insrsid6581781 
+\par }{\rtlch\fcs1 \ab\af1\afs20 \ltrch\fcs0 \b\f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 Des\hich\af1\dbch\af31505\loch\f1 cription:}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  }{\rtlch\fcs1 
+\af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 This sample provides following functionalities.}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \fi-360\li360\ri0\nowidctlpar\tx360\wrapdefault\faauto\rin0\lin360\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 -\tab \hich\af1\dbch\af31505\loch\f1 
+Let users specify the export options and export the current project to dwg, dwf(x), gbxml, fbx}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid7222648 \hich\af1\dbch\af31505\loch\f1  or}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 
+\hich\af1\dbch\af31505\loch\f1  }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 dgn }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 
+files}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 .
+\par }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 -\tab \hich\af1\dbch\af31505\loch\f1 Let users specify the import options and import a dwg, image, }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 
+\hich\af1\dbch\af31505\loch\f1 GBXML or Inventor}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  file into Revit. }{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 
+\par }{\rtlch\fcs1 \ab\af1\afs20 \ltrch\fcs0 \b\f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 Instructions:}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\cf2\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  }{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 
+\f0\fs20\cf2\insrsid6581781 
+\par }\pard \ltrpar\ql \fi-360\li360\ri0\nowidctlpar\tx360\wrapdefault\faauto\rin0\lin360\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 1.\tab Open Revit application and execute the command}{\rtlch\fcs1 
+\af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 .}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \fi-360\li360\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin360\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 2.\tab \hich\f1 To export, check the radio button \'93\loch\f1 \hich\f1 export
+\'94\loch\f1 \hich\f1 , select the format to export and click \'93\loch\f1 \hich\f1 OK\'94\loch\f1  button}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 .}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 
+\hich\af1\dbch\af31505\loch\f1  The 3D DWF(x) and fbx formats will be available only when current view i\hich\af1\dbch\af31505\loch\f1 s a 3D view.
+\par }\pard \ltrpar\ql \fi-420\li780\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin780\itap0 {\rtlch\fcs1 \af40\afs20 \ltrch\fcs0 \f40\fs20\insrsid6581781 -\tab }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 
+To export dwg, DWF(x) or dgn formats
+\par }\pard \ltrpar\ql \li720\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin720\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 \hich\f1 Specify the file name to export to, set the common options and click \'93
+\loch\f1 \hich\f1 Option\'85\'94\loch\f1  button to set the }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 lower priority}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 
+\f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 \hich\f1  options, click \'93\loch\f1 \hich\f1 Select\'85\'94\loch\f1 \hich\f1  button to select multi-views to export. Then click \'93\loch\f1 \hich\f1 Save\'94\hich\af1\dbch\af31505\loch\f1 
+ button to perform export.}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \fi-420\li780\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin780\itap0 {\rtlch\fcs1 \af40\afs20 \ltrch\fcs0 \f40\fs20\insrsid6581781 -\tab }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 
+To export gbxml or fbx formats
+\par }\pard \ltrpar\ql \li720\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin720\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 \hich\f1 Specify the file name to export to and click \'93\loch\f1 \hich\f1 Save\'94
+\loch\f1  button to perform export.
+\par \hich\af1\dbch\af31505\loch\f1 [}{\rtlch\fcs1 \ab\af1\afs20 \ltrch\fcs0 \b\f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 NOTE}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 
+]To export fbx format successfully, the Revit render appearance library must have been installed}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 .
+\par }\pard \ltrpar\ql \li0\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin0\itap0 {\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 \hich\af0\dbch\af31505\loch\f0   }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 
+\par }\pard \ltrpar\ql \fi-360\li360\ri0\nowidctlpar\tx360\wrapdefault\faauto\rin0\lin360\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 3.\tab To import\hich\af1\dbch\af31505\loch\f1 \hich\f1 
+, check the radio button \'93\loch\f1 \hich\f1 import\'94\loch\f1 \hich\f1  and click \'93\loch\f1 \hich\f1 OK\'94\loch\f1  button. The image format will be available only when current view is not 3D view.
+\par }\pard \ltrpar\ql \fi-420\li780\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin780\itap0 {\rtlch\fcs1 \af40\afs20 \ltrch\fcs0 \f40\fs20\insrsid6581781 -\tab }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 
+To import dwg format
+\par }\pard \ltrpar\ql \li720\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin720\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 \hich\f1 Specify the dwg file to import and set the other options. Then click \'93
+\loch\f1 \hich\f1 Open\'94\loch\f1  button to perform import}{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0 \f0\fs20\insrsid6581781 .
+\par }\pard \ltrpar\ql \fi-420\li780\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin780\itap0 {\rtlch\fcs1 \af40\afs20 \ltrch\fcs0 \f40\fs20\insrsid6581781 -\tab }{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 
+To Import image,}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\lang1036\langfe2052\langnp1036\insrsid6581781 \hich\af1\dbch\af31505\loch\f1  GBXML or Inventor}{\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 
+ format
+\par }\pard \ltrpar\ql \li720\ri0\nowidctlpar\wrapdefault\faauto\rin0\lin720\itap0 {\rtlch\fcs1 \af1\afs20 \ltrch\fcs0 \f1\fs20\insrsid6581781 \hich\af1\dbch\af31505\loch\f1 \hich\f1 Specify the file to import and click \'93\loch\f1 \hich\f1 Open\'94\loch\f1 
+ button to perform import.
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SDK/Samples/ImportExport/CS/Unit.cs

@@ -0,0 +1,80 @@
+//
+// (C) Copyright 2003-2019 by Autodesk, Inc.
+//
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+//
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+//
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+//
+
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+using Autodesk.Revit.DB;
+using System.Configuration;
+using System.Reflection;
+
+namespace Revit.SDK.Samples.ImportExport.CS
+{
+    /// <summary>
+    /// Provides static functions to convert unit
+    /// </summary>
+    static class Unit
+    {
+        #region Methods
+        /// <summary>
+        /// Convert the value get from RevitAPI to the value indicated by ForgeTypeId
+        /// </summary>
+        /// <param name="to">ForgeTypeId indicates unit of target value</param>
+        /// <param name="value">value get from RevitAPI</param>
+        /// <returns>Target value</returns>
+        public static double CovertFromAPI(ForgeTypeId to, double value)
+        {
+            return value *= ImperialDutRatio(to);
+        }
+
+        /// <summary>
+        /// Convert a value indicated by ForgeTypeId to the value used by RevitAPI
+        /// </summary>
+        /// <param name="value">Value to be converted</param>
+        /// <param name="from">ForgeTypeId indicates the unit of the value to be converted</param>
+        /// <returns>Target value</returns>
+        public static double CovertToAPI(double value, ForgeTypeId from )
+        {
+            return value /= ImperialDutRatio(from);
+        }
+
+        /// <summary>
+        /// Get ratio between value in RevitAPI and value to display indicated by ForgeTypeId
+        /// </summary>
+        /// <param name="unit">ForgeTypeId indicates display unit type</param>
+        /// <returns>Ratio </returns>
+        private static double ImperialDutRatio(ForgeTypeId unit) 
+        {
+            if (unit == UnitTypeId.Feet) return 1;
+            if (unit == UnitTypeId.FeetFractionalInches) return 1;
+            if (unit == UnitTypeId.Inches) return 12;
+            if (unit == UnitTypeId.FractionalInches) return 12;
+            if (unit == UnitTypeId.Meters) return 0.3048;
+            if (unit == UnitTypeId.Centimeters) return 30.48;
+            if (unit == UnitTypeId.Millimeters) return 304.8;
+            if (unit == UnitTypeId.MetersCentimeters) return 0.3048;
+            return 1;
+        }
+        #endregion
+    }
+}