DockPanel
<TextBlock Background="LightBlue"
DockPanel.Dock="Top">Some Text</TextBlock>
<TextBlock DockPanel.Dock="Bottom"
Background="LightYellow">Some text at the bottom of the page.</TextBlock>
<TextBlock DockPanel.Dock="Left"
Background="Lavender">Some More Text</TextBlock>
<DockPanel Background="Bisque">
<StackPanel DockPanel.Dock="Top">
<Button HorizontalAlignment="Left"
Height="30px"
Width="100px"
Margin="10,10,10,10">Button1</Button>
<Button HorizontalAlignment="Left"
Height="30px"
Width="100px"
Margin="10,10,10,10">Button2</Button>
</StackPanel>
<TextBlock Background="LightGreen">Some Text Below the Buttons</TextBlock>
</DockPanel>
</DockPanel>
