I have a couple of .NET Framework class library projects which provide reusable functionality for WPF and Winforms. These projects currently do so by referencing the .NET Framework assemblies like ...

My target: create a C# library to open a WPF Window, and then package it as a dll file. In the end, the dll can be called by other platform(for example: python) If it's a Winform window, it's easy.