Put control into a Canvas
<UserControl x:Class='SilverlightApplication3.MainPage' xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation' xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml' xmlns:d='http://schemas.microsoft.com/expression/blend/2008' xmlns:mc='http://schemas.openxmlformats.org/markup-compatibility/2006' mc:Ignorable='d' d:DesignWidth='640' d:DesignHeight='480'> <StackPanel Orientation="Vertical" Background="White"> <Canvas x:Name="ShapesCanvas" HorizontalAlignment="Left" VerticalAlignment="Top" Height="200" Width="600" Background="LightGray" Margin="20"> <TextBlock Canvas.Top="20" Canvas.Left="5" FontSize="40" Foreground="Navy" Text="Canvas Text" /> <Rectangle Canvas.Top="50" Canvas.Left="50" Height="100" Width="200" Fill="Yellow" Canvas.ZIndex="-1" /> <TextBlock Canvas.Top="150" Canvas.Left="300" FontSize="30" Foreground="Green" Text="More Text..." /> </Canvas> </StackPanel> </UserControl>