xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
x:Class="Microsoft.Samples.Graphics.AnimateGeometryDrawingExample"
Title="Using a DrawingBrush">
Viewbox="0,0,1,1" ViewboxUnits="Absolute">
Storyboard.TargetName="myAnimatedDrawing"
Storyboard.TargetProperty="(DockPanel.Background).(DrawingBrush.Drawing).(GeometryDrawing.Geometry).(EllipseGeometry.RadiusX)"
From="0.01" To="0.5" Duration="0:0:10" AutoReverse="True" RepeatBehavior="Forever" />