I have had this problem for a long time. I have a .net solution that contains both C# and Managed C++ projects. The StartUp project is a C# project which reference the Managed C++ project. Everything compiles and executes fine. However, Resharper flags the namespace and Classes defined in my Managed C++ project as unresolved:
How Can I tell Resharper to "Get the Memo" that my Managed C++ namespace and Classes are valid?