For classic .NET, yes, all executables are fully valid libraries. (For .net core, the executables actually compile to dlls with a native runner executable somet

For classic .NET, yes, all executables are fully valid libraries. (For .net core, the executables actually compile to dlls with a native runner executable sometimes included alongside it. (Depends on exact build command used). For win32, loading executables as code libraries is not officially supported. Now, it does sort-of work, but there are limitations that are totally undocumented. What is officially supported is dynamically loading executables to access resources.