Have to use C# dll to call C++ dll?

Question

Do I have to create a C# DLL to call C++ DLL or I can call it directly from my C# application?

Answer 1

You can call it directly with PInvoke and the DllImport attribute. Assuming, of course, that it has standard C entry points, not compiler-specific C++ entry points.

Unless you were talking about C++/CLI, in which case you would reference the .NET DLL exactly as you would reference any other .NET DLL.