xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="AnimatedPopup"> Storyboard.TargetName="theTransform" Storyboard.TargetProperty="(RotateTransform.Angle)" From="0" To="360" Duration="0:0:5" AutoReverse="True"/> Click to see the Popup animate