What is the correct way to dispose of a WPF window?

Question

I have a WPF window which I am creating from another window by calling Show(), then letting it Close() itself. When the window closes, I expect it

Answer 1

Close() releases all unmanaged resources, and closes all owned Windows.

Any other managed resources you need deterministic disposal of should be handled from the Closed event.

Reference

(note: deleted previous answer, it was a completely wrong guess)