WPF C#

    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="Microsoft.Samples.Graphics.RectangleExample"
    WindowTitle="Example">
  
              Name="MyWipedText"
        Margin="20" 
        Width="480" Height="100" FontSize="48" FontWeight="Bold" Foreground="Maroon">
        This is wiped text
        
          
            
              
                                  Storyboard.TargetName="MyWipedText" 
                  Storyboard.TargetProperty="(TextBlock.Width)"
                  To="0.0" Duration="0:0:10" 
                  AutoReverse="True" RepeatBehavior="Forever" />