In .NET Forms you could Dock a control to an edge of it's parent container. However there does not seem to be anything like this in WPF. Right now I am writing an app that needs to run Full-Screen, but the main Image I am trying to use is not resizing with the rest of the window when I put it in Full-Screen Mode. This Image is incredibly large (2500x1900) so when I set the Height and Width to AUTO the Image blows up. Any ideas or suggestions??