How do I call unmanaged C/C++ code from a C# ASP.NET webpage

Question

I have an ASP.NET website that uses C# and I'd like to call functions from an unmanaged C/C++ DLL. How do I do it?

Answer 1

Check out P/Invoke.

Calling Win32 DLLs in C# with P/Invoke

If it's a COM dll, then you can use COM Interop