问题
This question has been asked before, but I never found a truly satisfying solution -
I have a class library written in C#, and I want to call it from a legacy native C++ application. The host application is truly native, compiled on Windows & Linux, its a console application. So how can I make it call the C# class library, assuming using Microsoft .NET on Windows, and Mono on Linux.
I have looked at SWIG and wrapping with COM interfaces on Windows, but is there a standard recognized solution that works cross platform? i.e. that is generic, works with both Microsoft .NET and Mono, a write once use everywhere implementation.
Solutions should expose the full class interfaces from the C# domain to the C++ domain.
Similar questions focus only on the Windows solutions, for example -
Call C# methods from C++ without using COM
回答1:
If you want to do this cross platform, I would recommend going with a 100% Mono approach.
Mono has a clean Embedding API which works on Linux and Windows.
回答2:
With .NET 5.0 (the successor of .NET core) this is now possible to call C# from C++ in a cross-platform way without using Mono. Please see the solution explained in this Github issue using DNNE to generate a shared library and GCHandles to access C# objects.
With this you get a shared library that can be used from C or C++. Note that this will give a C-like API (no objects, like when using extern C in C++), in the future there may be tools like SWIG for C++ to overcome this limitation.
来源：https://stackoverflow.com/questions/1314769/calling-c-sharp-from-native-c-without-clr-or-com