C# Libraries in the Third Party Folder

There are a number of C# files in the Engine/Source/Third Party folder. I thought there wasn’t a way to support C#?

Is it possible to place other libraries there (Or in the actual project folder) and call them from C++? Without Mono? And later from a Blueprint?

If so, are there any tutorials that touch on this?

I think the C# is there for the building in Visual Studio. Other then that there is no C# support out of the box. You could look at Xamarin who is working on C# support in UE4. Take a look here: https://mono-ue.github.io/ Be aware its not ready yet and has some license(or more: costs) ‘issues’.

Its worse, language integrations have to be free to be inline with the Engine License, and Mono is not really. CoreCLR will be really free.

UE4 does not use VS at all except the compiler, C# in UE4 is used for it’s own build utilities as well as build scripts for UnrealBuildTool