Comment by albertzeyer

Now as .Net becomes more interesting again (for me), can someone comment on the state of GUI app development in .Net?

Can I write cross-platform GUI code, or would I need to re-implement the GUI on every platform?

Do Windows .Net GUI apps (does that mean Windows.Forms?) work just as-is on Linux (and maybe MacOSX)?

What would be the best supported GUI .Net framework? QtSharp? Windows.Forms?

I found some overview here, but not sure if accurate / up-to-date: http://www.mono-project.com/docs/gui/