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How do I mix C# and C++ code in a single assembly?

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This is an FAQ posted internally. Share it with everyone.

It applies to .Net framework 2.0 beta2+.

How do I mix C# and C++ code in a single assembly?

If your C++ code is not compiled with /clr:safe (i.e. it is compiled with /clr or /clr:pure), do the following:

1) compile your C++ code into .obj files

2) compile your C# code into a .netmodule, using /AddModule to reference the C++ .obj files

3) link the C# netmodule directly with the C++ object files using the C++ linker to create a mixed language assembly

If your C++ code is compiled with /clr:safe, build your C++ code as a .netmodule. You can use it just like you would use a .netmodule from any other language.

Comments

  • Anonymous
    May 23, 2005
    How about the opposite -- is there an "easy" (relatively) way to take a mixed mode assembly and decompile it to the il + native code chunk?
  • Anonymous
    May 23, 2005
    I have no idea.
  • Anonymous
    May 23, 2005
    Does this not work in .NET 1.1?
  • Anonymous
    May 23, 2005
    No it does not work in .Net 1.1
  • Anonymous
    June 02, 2005
    Do you have a simple sample showing the cs and cpp code?