Using C# extension methods from managed C++/CLI

Question

Forgive me if my terminology is a little off. My knowledge of managed C++/CLI is very limited.

I have an MFC application that uses a dll with the /clr option enable

Answer 1

You have to just call it like a static method:

IPAddressExtensions::GetSubnetMask(address);

The "extension" method is more of a compiler trick than a difference in the CLR.