C# / WPF. Unfortunately, it's become obsolete (WPF), and M$ is pushing UWP into view. I have lots and lots and lots of issues with that, I could probably write

C# / WPF. Unfortunately, it's become obsolete (WPF), and M$ is pushing UWP into view. I have lots and lots and lots of issues with that, I could probably write a book on it. They're working on WinUI 3.0, and that should be the holy grail of UIs (when it comes to C#). I'm pretty skeptical, so we'll see...