Discrete Double Key Frame
<Canvas xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"> <Line Stroke="Black" StrokeThickness="3" X1="0" Y1="0" X2="0" Y2="-100" Canvas.Left="150" Canvas.Top="150"> <Line.RenderTransform> <RotateTransform x:Name="xform1" /> </Line.RenderTransform> </Line> <Line Stroke="Black" StrokeThickness="3" X1="0" Y1="0" X2="0" Y2="-100" Canvas.Left="450" Canvas.Top="150"> <Line.RenderTransform> <RotateTransform x:Name="xform2" /> </Line.RenderTransform> </Line> <Canvas.Triggers> <EventTrigger RoutedEvent="Canvas.Loaded"> <BeginStoryboard> <Storyboard> <DoubleAnimation Storyboard.TargetName="xform1" Storyboard.TargetProperty="Angle" From="0" To="360" Duration="0:1" RepeatBehavior="Forever" /> <DoubleAnimationUsingKeyFrames Storyboard.TargetName="xform2" Storyboard.TargetProperty="Angle" RepeatBehavior="Forever" IsCumulative="True"> <DiscreteDoubleKeyFrame KeyTime="0:0:1" Value="6" /> </DoubleAnimationUsingKeyFrames> </Storyboard> </BeginStoryboard> </EventTrigger> </Canvas.Triggers> </Canvas>