Create a wrapper class to call C++ Dll and its method from C# application

Question

_{Thursday, February 6, 2014 12:48 PM}

Hi All,

Greetings.

I have a c++ dll which have some methods. I would like to call the dll methods from my C# Windows application.

For that I need a wrapper class to communicate with C++ methods. How can i write a c# wrapper class for c++ dll.

Could you please provide a simple example to start with it.

Thanks,

Sathiya Jeba

All replies (2)

_{Thursday, February 6, 2014 1:40 PM ✅Answered}

You need to use a technique called Platform Invoke, or PInoke, for short. You can find lots of tutorials, including the one at http://msdn.microsoft.com/en-us/library/aa288468(v=vs.71).aspx, by searching the Web for "pinvoke tutorial".

This example shows you how to use the DllImport attribute to output a message by calling puts from msvcrt.dll

using System;using System.Runtime.InteropServices;class PlatformInvokeTest{    [DllImport("msvcrt.dll")]    public static extern int puts(string c);    [DllImport("msvcrt.dll")]    internal static extern int _flushall();    public static void Main()     {        puts("Test");        _flushall();    }}

_{Thursday, February 6, 2014 2:43 PM ✅Answered}

Try the pinvoke website www.pinvoke.net which has all the c# methods to call the windows system dlls.

jdweng