WPF VB.Net

      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      HorizontalAlignment="Stretch" VerticalAlignment="Stretch">

  
    
      
        
            
            
            
                                             Storyboard.TargetName="button1"
                               Storyboard.TargetProperty="(Button.Height)"
                               By="30" AutoReverse="True" />
            
                                             Storyboard.TargetName="button2"
                               Storyboard.TargetProperty="(Button.Height)"
                               By="30" AutoReverse="True" />
            
              
            
                                                 Storyboard.TargetName="button3"
                                 Storyboard.TargetProperty="(Button.Height)"
                                 By="30" AutoReverse="True" />
            
            
              
            
            
            
        

      

    
  

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