WPF VB.Net

        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
                 Canvas.Left="0" Canvas.Top="0">
        
            
                
                    
                                                    Storyboard.TargetProperty="(Canvas.Left)"
                            From="0" To="300" Duration="0:0:0.25"
                            AutoReverse="True" 
                            RepeatBehavior="20x" />
                                                    Storyboard.TargetProperty="(Canvas.Top)"
                            From="0" To="480" Duration="0:0:5"
                            AutoReverse="True" />