<Canvas xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:s="clr-namespace:System;assembly=mscorlib">
<Ellipse Name="elips" Width="20" Height="20" Fill="Red" Canvas.Left="96">
<Ellipse.Triggers>
<EventTrigger RoutedEvent="Ellipse.Loaded">
<BeginStoryboard>
<Storyboard TargetName="elips"
TargetProperty="(Canvas.Top)"
RepeatBehavior="Forever">
<DoubleAnimationUsingKeyFrames>
<DiscreteDoubleKeyFrame KeyTime="0:0:0" Value="96" />
<SplineDoubleKeyFrame KeyTime="0:0:1" Value="480"
KeySpline="0.25 0, 0.6 0.2" />
<SplineDoubleKeyFrame KeyTime="0:0:2" Value="96"
KeySpline="0.75 1, 0.4 0.8" />
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Ellipse.Triggers>
</Ellipse>
</Canvas>
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