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>