Hi Ravi, Please refer the below link and navigate to section �??Install the ArcGIS 10 ArcObjects .NET SDK�?� The below link describes the following: At ArcGIS 10, you must install the ArcGIS 10 ArcObjects .NET software development kit (SDK) to develop .NET-based Desktop or Engine applications. This was not explicitly required at 9.3. Before you can install the ArcGIS 10 ArcObjects .NET SDK, the following software must be installed on your machine: �?� Microsoft .NET Framework 3.5.1 �?� Visual Studio 2008 with Service Pack 1 http://help.arcgis.com/en/sdk/10.0/arcobjects_net/conceptualhelp/index.html#/How_to_migrate_ArcGIS_9_3_Desktop_and_Engine_stand_alone_applications_to_ArcGIS_10/0001000002ns000000/ I hope this helps !! 🙂
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