>>The sdk code samples http://msdn.microsoft.com/en-us/library/ms231684.aspx ?
>
>I don't think that's the same. If I keep that import and add that code, it doesn't change anything. I think that one comes from a special library that we have to add in our .NET environment.


Seems to me that you have to define the interfaces ISharedInterface and IMessageSender


Do the code samples you are using give more information ?