Shapes Silverlight

    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'>

               Data="M 20,20 Q 500,500 200,80"
             Fill="Red" Stroke="Black"
             StrokeThickness="1">
    
     
      
       
                 Storyboard.TargetProperty="StrokeThickness"
         Storyboard.TargetName="qbezier1">
                                     Duration="0:0:4"/>