elements event
Accepted solution
Dear,
i think no you can find document change event.
Following are document events. You can check in apps while writing cod
Entire code for DMU example but better you read post from given link.
[Transaction( TransactionMode.Automatic )] [Regeneration( RegenerationOption.Manual )] public class AlignRebar : IExternalApplication { /// <summary> /// On shutdown, unregister the updater /// </summary> public Result OnShutdown( UIControlledApplication a ) { RebarUpdater updater = new RebarUpdater( a.ActiveAddInId ); UpdaterRegistry.UnregisterUpdater( updater.GetUpdaterId() ); return Result.Succeeded; } /// <summary> /// On start up, add UI buttons, register /// the updater and add triggers /// </summary> public Result OnStartup( UIControlledApplication a ) { // Add the UI buttons on start up AddButtons( a ); RebarUpdater updater = new RebarUpdater( a.ActiveAddInId ); // Register the updater in the singleton // UpdateRegistry class UpdaterRegistry.RegisterUpdater( updater ); // Set the filter; in this case we // shall work with beams specifically ElementCategoryFilter filter = new ElementCategoryFilter( BuiltInCategory.OST_StructuralFraming ); // Add trigger UpdaterRegistry.AddTrigger( updater.GetUpdaterId(), filter, Element.GetChangeTypeGeometry() ); return Result.Succeeded; } /// <summary> /// Add UI buttons /// </summary> public void AddButtons( UIControlledApplication a ) { // create a ribbon panel on the Analyze tab RibbonPanel panel = a.CreateRibbonPanel( Tab.Analyze, "RST Labs" ); AddDmuCommandButtons( panel ); } /// <summary> /// Control buttons for the Dynamic Model Update /// </summary> public void AddDmuCommandButtons( RibbonPanel panel ) { string path = GetType().Assembly.Location; string sDirectory = System.IO.Path.GetDirectoryName( path ); // create toggle buttons for radio button group ToggleButtonData toggleButtonData3 = new ToggleButtonData( "RSTLabsDMUOff", "Align Off", path, "RstAvfDmu.UIDynamicModelUpdateOff" ); toggleButtonData3.LargeImage = new BitmapImage( new Uri( sDirectory + "\\Images\\" + "Families.ico" ) ); ToggleButtonData toggleButtonData4 = new ToggleButtonData( "RSTLabsDMUOn", "Align On", path, "RstAvfDmu.UIDynamicModelUpdateOn" ); toggleButtonData4.LargeImage = new BitmapImage( new Uri( sDirectory + "\\Images\\" + "Families.ico" ) ); // make dyn update on/off radio button group RadioButtonGroupData radioBtnGroupData2 = new RadioButtonGroupData( "RebarAlign" ); RadioButtonGroup radioBtnGroup2 = panel.AddItem( radioBtnGroupData2 ) as RadioButtonGroup; radioBtnGroup2.AddItem( toggleButtonData3 ); radioBtnGroup2.AddItem( toggleButtonData4 ); } } public class RebarUpdater : IUpdater { public static bool m_updateActive = false; AddInId addinID = null; UpdaterId updaterID = null; public RebarUpdater( AddInId id ) { addinID = id; // UpdaterId that is used to register and // unregister updaters and triggers updaterID = new UpdaterId( addinID, new Guid( "63CDBB88-5CC4-4ac3-AD24-52DD435AAB25" ) ); } /// <summary> /// Align rebar to updated beam /// </summary> public void Execute( UpdaterData data ) { if( m_updateActive == false ) { return; } // Get access to document object Document doc = data.GetDocument(); try { // Loop through all the modified elements foreach( ElementId id in data.GetModifiedElementIds() ) { FamilyInstance beam = doc.get_Element( id ) as FamilyInstance; // Create a filter to retrieve all rebars FilteredElementCollector rebars = new FilteredElementCollector( doc ); rebars.OfCategory( BuiltInCategory.OST_Rebar ); rebars.OfClass( typeof( Rebar ) ); foreach( Rebar rebar in rebars ) { // Calculate the beam line XYZ beamStartPoint = new XYZ(); XYZ beamEndPoint = new XYZ(); Line line = CalculateBeamLine( beam ); // Get the start and end point if( null != line ) { beamStartPoint = line.get_EndPoint( 0 ); beamEndPoint = line.get_EndPoint( 1 ); } // To align the rebar to the new beam's // length, we split the tasks in two stages // Step 1: Move the rebar to align with one // of the end of the beam // For this we first access the // rebar line geometry Line rebarLine = rebar.Curves.get_Item( 0 ) as Line; // Calculate the translation vector // (the extent of the move) XYZ transVec = new XYZ( beamStartPoint.X - rebarLine.get_EndPoint( 0 ).X, 0.0, 0.0 ); // Perform the move doc.Move( rebar, transVec ); // This move causes the beam line to change // and so recalculating the beam line line = CalculateBeamLine( beam ); // Step 2: Set the new length of the rebar // based on new beam length. For this, we // can set the relevant parameter after // checking at UI rebar.get_Parameter( "B" ).Set( GetLength( line ) ); } } } catch( Exception ex ) { TaskDialog.Show( "Exception", ex.Message ); } } // Calculate the beam line private Line CalculateBeamLine( FamilyInstance beam ) { GeometryElement geoElement = beam.get_Geometry( new Options() ); if( null == geoElement || 0 == geoElement.Objects.Size ) { throw new Exception( "Can't get the geometry of selected element." ); } Line beamLine = null; foreach( GeometryObject geoObject in geoElement.Objects ) { // get the driving path and vector of the beam beamLine = geoObject as Line; if( null != beamLine ) { return beamLine; } } return null; } /// <summary> /// Return the length of the given line /// </summary> public static double GetLength( Line line ) { XYZ v = line.get_EndPoint( 1 ) - line.get_EndPoint( 0 ); return v.GetLength(); } /// <summary> /// Return the auxiliary string /// </summary> public string GetAdditionalInformation() { return "Automatically align rebar to match beam"; } /// <summary> /// Set the priority /// </summary> public ChangePriority GetChangePriority() { return ChangePriority.Rebar; } /// <summary> /// Return the updater Id /// </summary> public UpdaterId GetUpdaterId() { return updaterID; } /// <summary> /// Return the updater name /// </summary> public string GetUpdaterName() { return "Rebar alignment updater"; } } [Transaction( TransactionMode.ReadOnly )] [Regeneration( RegenerationOption.Manual )] public class UIDynamicModelUpdateOff : IExternalCommand { public Result Execute( ExternalCommandData commandData, ref string message, ElementSet elements ) { RebarUpdater.m_updateActive = false; return Result.Succeeded; } } [Transaction( TransactionMode.ReadOnly )] [Regeneration( RegenerationOption.Manual )] public class UIDynamicModelUpdateOn : IExternalCommand { public Result Execute( ExternalCommandData commandData, ref string message, ElementSet elements ) { RebarUpdater.m_updateActive = true; return Result.Succeeded; } }