DockPanel with TextBlock

   
      
<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      WindowTitle="DockPanel Sample">

    <StackPanel>
        <TabControl MinHeight="500" MinWidth="400">
            <TabItem Header="DockPanel" IsSelected="true">
                <DockPanel>
                    <Border Height="25" Background="Red" BorderBrush="Black" BorderThickness="1" DockPanel.Dock="Top">
                        <TextBlock Foreground="black">Dock = "Top"</TextBlock>
                    </Border>
                    <Border Height="25" Background="Blue" BorderBrush="Black" BorderThickness="1" DockPanel.Dock="Top">
                        <TextBlock Foreground="black">Dock = "Top"</TextBlock>
                    </Border>
                    <Border Height="25" Background="Black" BorderBrush="Black" BorderThickness="1" DockPanel.Dock="Bottom">
                        <TextBlock Foreground="black">Dock = "Bottom"</TextBlock>
                    </Border>
                    <Border Width="200" Background="PaleGreen" BorderBrush="Black" BorderThickness="1" DockPanel.Dock="Left">
                        <TextBlock Foreground="black">Dock = "Left"</TextBlock>
                    </Border>
                    <Border Background="White" BorderBrush="Black" BorderThickness="1">
                        <TextBlock Foreground="black">This content fills the remaining, unallocated space.</TextBlock>
                    </Border>
                </DockPanel>
            </TabItem>

        </TabControl>

    </StackPanel>

</Page>