不可能. C不是OO，C#强制OO作为开始.如果您说的是C ++和C#，则可以使C ++代码成为C ++/CLI，并将一组代码放入dll.否则，您可以构建一个C dll，然后使用p/invoke对其进行调用.但是您不能拥有一个使用C和C#甚至C ++和C#的项目.

Not possible. C is not OO, and C# forces OO, for a start. If you said C++ and C#, then you could make your C++ code C++/CLI and put one set of code in a dll. Otherwise, you could build a C dll, and call it using p/invoke. But you can''t have one project with C and C#, or even C++ and C#.