How to reference native function inside a class?

Question

I've got a dll, which exports function, which looks like this: MyClass::MyMethod(char*).

How do I use that through DllImport?

Answer 1

You use DllImport, like this:

[DllImport("MyNativeC++DLL.dll")]
private static extern void MyMethod(StringBuilder myCharPointerParameter);

See Passing char pointer from C# to c++ function

Answer 2

If MyClass::MyMethod is static, it can be exported and p/Invoked with ease (see Eric's answer).

If this is an instance method, things get a whole lot more difficult. How to Marshal a C++ Class.