Default Button
<Window x:Class="SimpleStyles.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="SimpleStyles" Background="#F8F8F8"> <ScrollViewer> <WrapPanel> <HeaderedItemsControl Header="Button"> <Button Margin="8" IsDefault="True">Default</Button> <Button Margin="8">Normal</Button> </HeaderedItemsControl> </WrapPanel> </ScrollViewer> </Window>