Calling C++ DLL in C#

Question

Hello,

I am having C++ application with multiple functions (No Class ) in  it.

I built this application as a DLL.

Also I am having a c# application in which I want to call 2-3 functions from built C++ DLL.

I am using following code to call a C++ function from C#;

using System.Runtime.InteropServices;

[DLLImport dllName]

public static extern function1(param1, param2, ...);

[DLLImport dllName]

public static extern function2(param11, param22, ...);

So, Is there any other way to do this instead of doing DLLImport for multiple times?

Is it possible to register a C++ DLL and use it in C# application without using DLLImport?

Thanks!!!

 

Answer 1

The DLL Import is the normal way to just import single functions of a DLL created with c++.

INstead of offering simple single functions, a c++ DLL could also be a COM Type Library. In such a case, you could use tlbimp.exe (Type Library Importer, http://msdn.microsoft.com/en-us/library/tt0cf3sx(v=VS.100).aspx) to import it for use in managed applications.

With kind regards,

Konrad

Answer 2

Check this:

http://msdn.microsoft.com/en-us/library/aa302324.aspx

Hope this helps.

Please Mark as answer if it helped you.

---

Santosh.

Answer 3

If the C++-code is yours then you could also write a C++/CLI wrapper around it, that
exposes a managed version of the unmanaged interface.
Then in C# you would simply need to reference the managed C++-DLL.

Chris