Mixing C# and C++?

[QUantumAnenome]

Does anyone know of a simple way to have a C# app use an existing C++ class with Visual Studio? Google searches just point to a bunch of "why would you want to do that" articles, which has nothing to do with the question asked.
Thank you for any help!

[teknomage1]

This link seemed promising:
How to: Wrap Native Class for Use by C#

I used the google query "c# c++ class use"