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This article describes how to get information not available in the general extensibility model of Visual Studio .NET (EnvDTE namespace) because it is specific to VB.NET and C# projects.
Visual Studio .NET supports many kind of projects (VB.NET, C#, C++, setup, database, etc.) and therefore the EnvDTE namespace provided by the EnvDTE.dll assembly only exposes the functionality common to all of them. For example, the information about references of VB.NET and C# projects, which do not apply to other kind of projects, is not exposed by that assembly. The extensibility model specific to VB.NET and C# projects resides in a different assembly named VSLangProj.dll. That assembly can be used in both Visual Studio .NET 2002 and 2003 (the later provides also a VSLangProj2.dll assembly with additional classes). You can get objects of the VSLangProj assembly from the objects of the EnvDTE assembly through its "Object" property. For example, you can cast the property EnvDTE.Project.Object to an VSLangProj.VSProject for VB.NET and C# projects. The following macro shows how to get the information about the references of a VB.NET or C# project:
Dim objProject As EnvDTE.Project Dim objVSProject As VSLangProj.VSProject Dim objReference As VSLangProj.Reference Dim sMsg As String
For Each objProject In DTE.Solution.Projects
If TypeOf objProject.Object Is VSLangProj.VSProject Then