WPF VB.Net

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="ShapesWindow" Height="160" Width="400">
      
        
          
          
          
            
              
            

          
        
        
          
            
              
            

          
        
      

    
        
          
                          GradientOrigin="0.75,0.25">
              
              
              
            
          

          
            
              
                
                                      Storyboard.TargetName="animatedGradientOriginExample"
                    Storyboard.TargetProperty="GradientOrigin"
                    From="1,0" To="0,1" Duration="0:0:3" FillBehavior="Stop" />