Left and Right get the 1st value, Top and Bottom get the 2nd value Posted on February 11, 2011June 27, 2015 by coder <Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" Title="About WPF" Background="OrangeRed"> <Canvas> <Label Padding="20,5" Background="Orange">20,5</Label> </Canvas> </Window>