Window Height="Auto" not working as expected

Question

Set the window's property SizeToContent="WidthAndHeight". This should help.

Old question but an updated answer:

As @Muad'Dib suggested in his answer :

you should set SizeToContent="WidthAndHeight".

If the size of content of window increases more than the screen size, window can overflow from screen. So, you must consider:

MaxWidth="600"
MaxHeight="400"

Well you can't set the window height to auto, to do this you can use a little trick, name the main main grid container, set its height to auto then bind the window height to the height of the main grid