Put buttons to StackPanel
<Window x:Class="WpfApplication1.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="StackPanelWindow" Height="222" Width="250"> <StackPanel Orientation="Vertical"> <Button Width="200">First</Button> <Button HorizontalAlignment="Left">Second</Button> <Button Padding="10 4">Third</Button> <Button Margin="20 20">Fourth</Button> <Button Padding="10 4" HorizontalAlignment="Right">Fifth</Button> <Button HorizontalAlignment="Stretch">Sixth</Button> </StackPanel> </Window>