https://community.esri.com/t5/arcobjects-sdk-questions/run-arcmap-application-from-net-code/m-p/1359148#M20623 <P>Hello!</P><P>I want to run ArcMap from c# code and get a link to an extension(add-in) for ArcMap.<BR />Then, I want to call the extension(add-in) method, wait for it to execute, and close ArcMap.</P><P>I do the following:</P><P>&nbsp;</P><LI-CODE lang="csharp">var doc = new MxDocumentClass(); var app = doc.Parent; var iapp = app as IApplication; var myExtClass = new ESRI.ArcGIS.esriSystem.UIDClass(); myExtClass.Value = "{666666d3-a999-55e5-777f-321321321326}"; var myExt = iapp.FindExtensionByCLSID(myExtClass); ...</LI-CODE><P>&nbsp;</P><P>But an&nbsp;error occurs during code execution: "new MxDocumentClass"<BR />The error is:</P><P>&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="err.png" style="width: 410px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/88626i5A202ECF9BC4CFEB/image-size/large?v=v2&amp;px=999" role="button" title="err.png" alt="err.png" /></span></P><P>If I run the ArcMap application manually, there is no error.</P><P>Version: ArcGis Desktop Basic 10.5.</P><P>Tell me, please, what could be the problem?</P> Tue, 12 Dec 2023 09:59:49 GMT vsevgu 2023-12-12T09:59:49Z https://community.esri.com/t5/arcobjects-sdk-questions/run-arcmap-application-from-net-code/m-p/1359148#M20623 <P>Hello!</P><P>I want to run ArcMap from c# code and get a link to an extension(add-in) for ArcMap.<BR />Then, I want to call the extension(add-in) method, wait for it to execute, and close ArcMap.</P><P>I do the following:</P><P>&nbsp;</P><LI-CODE lang="csharp">var doc = new MxDocumentClass(); var app = doc.Parent; var iapp = app as IApplication; var myExtClass = new ESRI.ArcGIS.esriSystem.UIDClass(); myExtClass.Value = "{666666d3-a999-55e5-777f-321321321326}"; var myExt = iapp.FindExtensionByCLSID(myExtClass); ...</LI-CODE><P>&nbsp;</P><P>But an&nbsp;error occurs during code execution: "new MxDocumentClass"<BR />The error is:</P><P>&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="err.png" style="width: 410px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/88626i5A202ECF9BC4CFEB/image-size/large?v=v2&amp;px=999" role="button" title="err.png" alt="err.png" /></span></P><P>If I run the ArcMap application manually, there is no error.</P><P>Version: ArcGis Desktop Basic 10.5.</P><P>Tell me, please, what could be the problem?</P> Tue, 12 Dec 2023 09:59:49 GMT https://community.esri.com/t5/arcobjects-sdk-questions/run-arcmap-application-from-net-code/m-p/1359148#M20623 vsevgu 2023-12-12T09:59:49Z