Hide Table of Contents

Fire Events When Display State Changes Example (C#)

This example shows how to fire the events related to changing display states of a configuration in an assembly document.

// Preconditions: 
// 1. Open an assembly document that has a configuration with multiple
//    display states.
// 2. Run this macro in debug mode.
// 3. Change the display state of the active configuration in SOLIDWORKS
//    (click the ConfigurationManager tab and double-click
//    a different display state).
// Postconditions:
// 1. Displays a message box informing you that the display state is about to
//    change.
// 2. After the display state changes, displays another message informing you
//    that the display state has changed.
// NOTE: This example also fires these events when you change
// configurations in an assembly document.
using SolidWorks.Interop.sldworks;
using SolidWorks.Interop.swconst;
using System;
using System.Collections;
using System.Windows.Forms;

namespace Macro1.csproj
 partial class SolidWorksMacro


        public AssemblyDoc swAssem;
        public void Main()


            ModelDoc2 swModel;
            Hashtable openAssem;
            swModel = (ModelDoc2)swApp.ActiveDoc;

            //Set up events
            swAssem = (AssemblyDoc)swModel;
            openAssem = new Hashtable();


        /// <summary>
        ///  The SldWorks swApp variable is pre-assigned for you.
        /// </summary>
        public SldWorks swApp;

        public void AttachEventHandlers()


        public void AttachSWEvents()
            swAssem.ActiveDisplayStateChangePreNotify += this.swAssem_ActiveDisplayStateChangePreNotify;
            swAssem.ActiveDisplayStateChangePostNotify += this.swAssem_ActiveDisplayStateChangePostNotify;


        public int swAssem_ActiveDisplayStateChangePreNotify()
        //Send message when user changes display state in the ConfigurationManager
            MessageBox.Show("The active configuration's display state is about to change.");
            return 1;


        public int swAssem_ActiveDisplayStateChangePostNotify(string DisplayStateName)
        //Send message after user changes display state in the ConfigurationManager
            MessageBox.Show("The active configuration's display state has changed.");
            return 1;


Provide feedback on this topic

SOLIDWORKS welcomes your feedback concerning the presentation, accuracy, and thoroughness of the documentation. Use the form below to send your comments and suggestions about this topic directly to our documentation team. The documentation team cannot answer technical support questions. Click here for information about technical support.

* Required

Subject:   Feedback on Help Topics
Page:   Fire Events When Display State Changes Example(C#)
*   I acknowledge I have read and I hereby accept the privacy policy under which my Personal Data will be used by Dassault Systèmes

Print Topic

Select the scope of content to print:


We have detected you are using a browser version older than Internet Explorer 7. For optimized display, we suggest upgrading your browser to Internet Explorer 7 or newer.

 Never show this message again

Web Help Content Version: API Help (English only) 2017 SP05

To disable Web help from within SOLIDWORKS and use local help instead, click Help > Use SOLIDWORKS Web Help.

To report problems encountered with the Web help interface and search, contact your local support representative. To provide feedback on individual help topics, use the “Feedback on this topic” link on the individual topic page.