如何在UWP中旋转一条线？

<Grid>
    <Line x:Name="myLine" X1="0" Y1="0" X2="100" Y2="0" Stroke="Black" StrokeThickness="2">
        <Line.RenderTransform>
            <RotateTransform x:Name="rotateTransform" CenterX="50" CenterY="0" Angle="0"/>
        </Line.RenderTransform>
    </Line>
</Grid>

private void StartRotation()
{
    DoubleAnimation animation = new DoubleAnimation
    {
        From = 0,
        To = 360,
        Duration = TimeSpan.FromSeconds(2),
        RepeatBehavior = RepeatBehavior.Forever
    };

    Storyboard.SetTarget(animation, rotateTransform);
    Storyboard.SetTargetProperty(animation, "Angle");

    Storyboard storyboard = new Storyboard();
    storyboard.Children.Add(animation);
    storyboard.Begin();
}