DockPanel

An area where you can position child elements and dock them to the side of a panel.

Arranges child elements onto an area that can be docked to one of the sides
The order that you place the child elements can affect the size of the child elements
This control measures only the available size

< DockPanel Name="DockPanel1" 
      Margin="10,10,10,10" 
      VerticalAlignment="Stretch" 
      Background="Orange" > 

</ DockPanel >