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Fire Assembly Rebuild Events Example (C#)

This example shows how to handle pre-notification and post-notification events for an assembly, which are fired when the assembly is rebuilt.

// ---------------------------------------------------------------------------- 
// Preconditions: 
//  1. Verify that the specified assembly document to open exists.
//  2. Open the Immediate window. 
// Postconditions: 
//  1. Opens the specified assembly document.
//  2. Inserts a cut-extrude assembly feature.
//  3. Pops up a dialog with the rebuild pre-notification. 
//  4. Click OK to close the dialog. 
//  5. Rebuilds the assembly. 
//  6. Pops up a dialog with the rebuild post-notification. 
//  7. Click OK to close the dialog.
//  8. Rolls back the rollback bar and pops up a dialog with the 
//     rebuild post-notification.
//  9. Click OK to close the dialog.
// 10. Examine the Immediate window and FeatureManager design tree.
// 11. Click Tools > Options > System Options > Stop VSTA debugger on macro exit > OK
// NOTE: Because the assembly is used elsewhere, do not save changes.
// ---------------------------------------------------------------------------- 
using SolidWorks.Interop.sldworks;
using SolidWorks.Interop.swconst;
using System;
using System.Diagnostics;
namespace Macro1.csproj
    partial class SolidWorksMacro
        ModelDoc2 swModel;
        public AssemblyDoc swAssembly;
        SketchManager swSketchManager;
        ModelDocExtension swModelDocExt;
        SketchSegment swSketchSegment;
        FeatureManager swFeatureManager;
        Feature swFeature;
        SelectionMgr swSelectionMgr;
        string fileName;
        int errors;
        int warnings;
        public void Main()
            swApp.SetUserPreferenceToggle((int)swUserPreferenceToggle_e.swStopDebuggingVstaOnExit, false);
            // Open assembly
            fileName = "C:\\Users\\Public\\Documents\\SOLIDWORKS\\SOLIDWORKS 2017\\tutorial\\smartcomponents\\stepped_shaft.sldasm";
            swModel = (ModelDoc2)swApp.OpenDoc6(fileName, (int)swDocumentTypes_e.swDocASSEMBLY, (int)swOpenDocOptions_e.swOpenDocOptions_Silent, ""ref  errors, ref warnings);
            // Insert a cut-extrude assembly feature
            swModelDocExt = (ModelDocExtension)swModel.Extension;
            swModelDocExt.SelectByID2("Front Plane""PLANE", 0, 0, 0, false, 0, null, 0);
            swSketchManager = (SketchManager)swModel.SketchManager;
            swSketchSegment = (SketchSegment)swSketchManager.CreateCircle(-0.016076, -0.532382, 0.0, 0.044465, -0.546417, 0.0);
            swModelDocExt.SelectByID2("Arc1""SKETCHSEGMENT", 0, 0, 0, false, 0, null, 0);
            swFeatureManager = (FeatureManager)swModel.FeatureManager;
            swFeature = (Feature)swFeatureManager.FeatureCut3(truefalsefalse, 0, 0, 0.00254, 0.00254, falsefalsefalsefalse, 0.0174532925199433, 0.0174532925199433, falsefalsefalsefalsefalsetruetruetruetruefalse, 0, 0, false);
            swSelectionMgr = (SelectionMgr)swModel.SelectionManager;
            swSelectionMgr.EnableContourSelection = false;
            // Event notification 
            swAssembly = (AssemblyDoc)swModel;
            // Rebuild the model 
            // Roll back the rollback bar
            swFeatureManager.EditRollback((int)swMoveRollbackBarTo_e.swMoveRollbackBarToBeforeFeature, swFeature.Name);
        public void AttachEventHandlers()
        public void AttachSWEvents()
            swAssembly.RegenNotify += this.swAssembly_RegenNotify;
            swAssembly.RegenPostNotify2 += this.swAssembly_RegenPostNotify2;
        private int swAssembly_RegenNotify()
            // Display message before rebuild 
            System.Windows.Forms.MessageBox.Show("A rebuild pre-notification event was fired.");
            return 0;
        private int swAssembly_RegenPostNotify2(object stopFeature)
            // Display message after rebuild 
            if ((stopFeature != null))
                Feature feature = default(Feature);
                feature = (Feature)stopFeature;
                Debug.Print("The rollback bar is above " + feature.Name + " in the FeatureManager design tree.");
            System.Windows.Forms.MessageBox.Show("A rebuild post-notification event was fired.");
            return 0;
        public SldWorks swApp;

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