GetProcAddress on managed C# dll

Question

I am trying to load C# dll through LoadLibrary. I am able to load it successfully. Can you please tell me how to use GetProcAddress for this dll so that i can use metods and types defined in this dlls.

Thanks in Advance!!!

Answer 1

EDIT

1 - Best way for this issue is COM. you should set the AssemblyInfo to expose the assembly as COM (ComVisible(true)). See this Microsoft suggestion:

• How to call a managed DLL from native Visual C++ code
• Unmanaged to Managed calls (C++ to C#)

2 - If you have Windows Vista or higher which has bitlocker, BitLocker can be useful.

3 - But if you cannot using COM, check out this on code-project:

• Calling Managed Code from Unmanaged Code

Answer 2

According to this link:

http://social.msdn.microsoft.com/Forums/br/vcmfcatl/thread/cadd6150-de10-47c5-bd5c-a356741c36b3

GetProcAddress will always return NULL for a managed DLL, since it has no exports.

That being said, there are better ways to access managed code from unmanaged code. You should create a C++/CLI wrapper around the unmanaged assembly, and then you can export the managed calls from inside the unmanaged wrapper functions.

Suppose one of your managed functions in class A is

public static void Foo() {}

You might have C++ code:

DLLEXPORT void FooThunk() {
    A::Foo();
}

PS: If anybody out there is comfortable with C++/CLI, please edit my answer to include a better example of such a wrapper.