Two of the drawing's rectangles are painted with an ImageBrush, creating a checkered pattern of images

   
     

<Window x:Class="Workspace.DockExample"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Workspace" Width="640" Height="480">

      <Rectangle Width="50" Height="50" Grid.Row="0" Grid.Column="1">
        <Rectangle.Fill>
          <VisualBrush Viewport="0,0,1,0.25" TileMode="Tile" Stretch="Uniform">
            <VisualBrush.Visual>
              <StackPanel Background="White">
                <TextBlock FontSize="10pt" Margin="1">Hello, World!</TextBlock>
              </StackPanel>
            </VisualBrush.Visual>
          </VisualBrush>
        </Rectangle.Fill>
      </Rectangle>


</Window>