Margin: Left,Top,Right,Bottom
<UserControl x:Class="SilverlightApplication3.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Width="800" Height="600">
<Canvas>
<Border BorderBrush="Black" BorderThickness="1">
<TextBlock Margin="0,10,20,30">0,10,20,30</TextBlock>
</Border>
</Canvas>
</UserControl>
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