In WPF how do I Resize main windows during the runtime

I want my m开发者_运维技巧ain WPF window during the runtime, when there is not enough space for my control, to resize itself. I could create a window which takes a maximum amount of space on the screen and make it transparent, but are there any other ways to do it?

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"I want my main WPF window during the runtime of my application when there is not enough space for my control"

What does this mean?

You should have a look at SizeToContent property on Window.