How to add the Team Foundation assemblies to the .NET tab in the VS Add Reference dialog
To write an app using the Team Foundation API, you're going to need to reference assemblies that are in the GAC. It's not possible to add a reference to a .NET assembly in the GAC in VS when you need to add a reference to an assembly.The GAC'ed Team Foundation assemblies are also copied to the PrivateAssemblies folder under the VS ...