Visual Studio 2010: Embed Interop Types

One remark about: if you add reference and property "Embed Interop Types = true " - this can make some casuistic errors while you compiling : - you see what inside reference have functions and propertyes - but compilator don't find it and generate errors !

The process described in Scott Hanselman's blog is called Type Equivalence, a rather nebulous term for the CLR 4.0's support for COM interop type assemblies. Although I haven't had a chance to look at it, there is a video here at Channel 9 that discusses it:

Raja Krishnaswamy and Vance Morrison: CLR 4 - Inside Type Equivalence
http://channel9.msdn.com/shows/Going+Deep/Raja-Krishnaswamy-and-Vance-Morrison-CLR-4-Inside-Type-Equivalence/

Apparently you can write your own "type equivalence" assemblies, and embed them. Note that this probably does not apply to just any COM assembly; type equivalence assemblies implement an interface called IApplication. See here:

Advances in .NET Type system: Type Equivalence Demo http://blogs.msdn.com/mshneer/archive/2008/10/28/advances-in-net-type-system-type-equivalence-demo.aspx