C# P\Invoke DLL no entry point into C++?

Question

I have a C++ Dll \"TheFoo.dll\" with a method \"Foo()\"

I have access to other C++ code that uses this method by simply calling:

Foo();

Answer 1

If you didn't declare it extern "C" in your dll, its name has likely been "mangled". You can use something like Dependency Walker to see what symbols your dll exports.