<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="1" 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.RelativeTransform>
<RotateTransform Angle="-45" CenterX="0.5" CenterY="0.5" />
</VisualBrush.RelativeTransform>
</VisualBrush>
</Rectangle.Fill>
</Rectangle>
</Window>