assets/samples/Samples/GenerateFloor/CS/Command.cs

//
// (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
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// documentation.
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// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
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// restrictions set forth in FAR 52.227-19 (Commercial Computer
// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
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//

using System;
using System.Collections.Generic;
using Autodesk.Revit;
using Autodesk.Revit.DB;
using Autodesk.Revit.UI;

namespace Revit.SDK.Samples.GenerateFloor.CS
{
    /// <summary>
    /// Implements the Revit add-in interface IExternalCommand
    /// </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 IExternalCommand Members Implementation
        /// <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(Autodesk.Revit.UI.ExternalCommandData commandData,
            ref string message, Autodesk.Revit.DB.ElementSet elements)
        {
           Transaction tran = new Transaction(commandData.Application.ActiveUIDocument.Document, "Generate Floor");
           tran.Start();

            try
            {
                if (null == commandData)
                {
                    throw new ArgumentNullException("commandData");
                }

                Data data = new Data();
                data.ObtainData(commandData);

                GenerateFloorForm dlg = new GenerateFloorForm(data);

                if (dlg.ShowDialog() == System.Windows.Forms.DialogResult.OK)
                {
                    CreateFloor(data, commandData.Application.ActiveUIDocument.Document);

                    tran.Commit();
                    return Autodesk.Revit.UI.Result.Succeeded;
                }
                else
                {
                   tran.RollBack();
                    return Autodesk.Revit.UI.Result.Cancelled;
                }                
            }
            catch (Exception e)
            {
                message = e.Message;
                tran.RollBack();
                return Autodesk.Revit.UI.Result.Failed;
            }
        }

        #endregion IExternalCommand Members Implementation

        /// <summary>
        /// create a floor by the data obtain from revit.
        /// </summary>
        /// <param name="data">Data including the profile, level etc, which is need for create a floor.</param>
        /// <param name="doc">Retrieves an object that represents the currently active project.</param>
        static public void CreateFloor(Data data, Document doc)
        {
            CurveLoop loop = new CurveLoop();
            foreach (Curve curve in data.Profile)
            {
                loop.Append(curve);
            }

            List<CurveLoop> floorLoops = new List<CurveLoop> { loop };

            Floor.Create(doc, floorLoops, data.FloorType.Id, data.Level.Id, data.Structural, null, 0.0);
        }
    }
}