When SizeToContent is set to WidthAndHeight, setting either Height or Width has no effect; both properties can be set, but the values they are set with are not applied to the window.
When SizeToContent is set to Height, setting Height will change the height of the window.
When SizeToContent is set to Width, setting Width will change the width of the window.
If SizeToContent has a value other than Manual:
SizeToContent is automatically set to Manual if a user resizes the window by using the resize grip or dragging the border.
If the size of the content changes in a way that causes the window to resize itself, SizeChanged is raised.
If a window is transparent (see AllowsTransparency), you should consider setting SizeToContent to WidthAndHeight to ensure the window is no larger than its visible content.
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You cannot set or get this property when a window is hosted in a browser.
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