2017-06-09 00:01
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Hello Go Lang and C# gurus,

Good day. I would like to ask if anyone of you have tried calling a C# DLL functions (Class Library type) from a Go program?

I have made some initial research and saw these articles:

- https://github.com/golang/go/wiki/WindowsDLLs
- https://stackoverflow.com/questions/27849137/golang-call-windows-dll-functions

But these are DLLs created out from C Win32 implementations. I tried searching for C# DLL loaded into Go program all of them will tell you that you need to have a C++/C (Win32) wrapper before you can call it on a Go program.

Plus, the links above will tell you that Go is expecting a "C" declaration I think (which is of type __declspec) or the likes (e.g. WINAPI).

Is there a way in this case where we can completely skip the C/C++ wrapper and directly call the C# DLL functions in Go?

Your enlightening ideas and inputs will be greatly appreciated =)!


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  • duanjianao0592 2017-06-09 02:52

    Option 1 Turn your .NET DLL into a COM component like this, then you can invoke it from golang following the steps in your first link. Remember this option is for windows only.

    Option 2 Wrap the DLL within a simple C# console application, and invoke the application in golang using os/exec. Your final program is still cross-platform if your C# DLL is cross-platform.

    Both options need a basic knowledge of C#, either creating COM components, or writing a console application to invoke the DLL. IMO the latter is easier.

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