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

Closing the window and being confident that you have released all resources to it and any of its children will cause all well behaved elements in the logic tree to be garbage collected.

I say "well behaved" because it's theoretically possible to have an element that does something like create a thread that isn't stopped properly, but in practice if you're using the basic WPF framework and well written controls, you should be fine to just release everything.