RevitSdkSamples/SDK/Samples/GeometryAPI/EnergyAnalysisModel/CS/Command.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;

using Autodesk.Revit.DB;
using Autodesk.Revit.UI;
using Autodesk.Revit.DB.Structure;

namespace Revit.SDK.Samples.EnergyAnalysisModel.CS
{
    /// <summary>
    /// A class inherits IExternalCommand interface.
    /// this class controls the class which subscribes handle events and the events' information UI.
    /// like a bridge between them.
    /// </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
    {
        #region Implement 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)
        {
            Transaction trans = new Transaction(commandData.Application.ActiveUIDocument.Document, "Revit.SDK.Samples.EnergyAnalysisModel");
            trans.Start();
            // Create an object that is responsible for collecting users inputs and getting analysis data of current model.
            using (EnergyAnalysisModel analysisModel = new EnergyAnalysisModel(commandData.Application.ActiveUIDocument.Document))
            {
               // Create the UI for users inputs options and view analysis models.
               using (OptionsAndAnalysisForm form = new OptionsAndAnalysisForm(analysisModel))
               {
                   // make analysis data ready
                   analysisModel.Initialize();
                   // show dialog to browser analysis model
                   if (DialogResult.OK != form.ShowDialog())
                   {
                       trans.RollBack();
                       return Result.Cancelled;
                   }
               }
               trans.Commit();
               return Result.Succeeded;
            }
         }

         #endregion
      }
}