<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" x:Class="SDKSample.SampleViewer" Title="Examples" > <Canvas> <Button Width="120" Height="20"> <Button.Background> <LinearGradientBrush> <LinearGradientBrush.GradientStops> <GradientStop Offset="0" Color="{x:Static SystemColors.DesktopColor}"/> <GradientStop Offset="1" Color="{x:Static SystemColors.ControlColor}"/> </LinearGradientBrush.GradientStops> </LinearGradientBrush> </Button.Background> </Button> </Canvas> </Window>