Can I integrate C and C# code?

This is a discussion on Can I integrate C and C# code? within the C# Programming forums, part of the General Programming Boards category; Hi, My question pertains to if it is possible to integrate some existing C code into a C# program. If ...

  1. #1
    Registered User stevespai's Avatar
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    Can I integrate C and C# code?

    Hi,

    My question pertains to if it is possible to integrate some existing C code into a C# program. If possible, what method would I use to integrate it? Should I put it into a class? How would I include the libraries so the compiler recognizes that the code is C? Any additional information would be greatly apprecaited.

    Thanks.
    Steve

  2. #2
    pronounced 'fib' FillYourBrain's Avatar
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    you're going to get yelled at for posting the same thing in two threads.

    But to answer. you can integrate them by using a C++/CLI module. C++/CLI can do managed and unmanaged code together in an assembly. The C# can then use the C++ assembly almost as if it is C# code
    "You are stupid! You are stupid! Oh, and don't forget, you are STUPID!" - Dexter

  3. #3
    Registered User stevespai's Avatar
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    Sorry about posting in two threads. I should have read the guidlines. I was hoping that if the C# programmers didn't have experience in this, maybe the C programmers would.
    Last edited by stevespai; 07-25-2006 at 06:46 PM.

  4. #4
    pronounced 'fib' FillYourBrain's Avatar
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    oh, no prob. Just be glad I got to you first Others throw punches.

    I've been using C++/CLI for a couple months now. Many of the people here hate it, but I see it as extremely useful for bringing existing code to .NET.
    "You are stupid! You are stupid! Oh, and don't forget, you are STUPID!" - Dexter

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    the hat of redundancy hat nvoigt's Avatar
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    As Fyb already said, you have to write a dll to integrate your C/C++ code with .NET. You can either write a normal C dll and call it through interop like any other C dll in C#. This is somewhat ugly on the C# side of the program, but you could use the same dll from your C programs. Somewhat nicer from a .NET point of view is writing a managed wrapper, also called a mixed mode dll. C++/CLI compiles to a normal .NET assembly, that looks, behaves and works the same as any dll written in C#. In C++/CLI you can include unmanaged code. Most of the time this is used to bring legacy C code into a new .NET application.
    hth
    -nv

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  6. #6
    Registered User stevespai's Avatar
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    Great, thanks for the info. I'll look into it and post with any more questions.

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