<Window x:Class="SDKSample.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="AnimatedPopup">
<StackPanel>
<CheckBox Name="myCheckBox" Margin="20,20,0,0" Content="Select CheckBox to see Popup"/>
<Button HorizontalAlignment="Left" Width="200" Margin="20,10,0,0">
<Button.Triggers>
<EventTrigger RoutedEvent="Button.Click">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation
Storyboard.TargetName="theTransform"
Storyboard.TargetProperty="(RotateTransform.Angle)"
From="0" To="360" Duration="0:0:5" AutoReverse="True"/>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Button.Triggers>
Click to see the Popup animate
</Button>
</StackPanel>
</Window>