将UWP XAML动画转换为c#

我有一个工作的XAML动画，用于动画一个类似里程表的数字。我需要制作这个动画的六个几乎相同但又不同的版本。据我所知，以这种方式重用动画XAML并不是一种好方法，所以为了保持代码DRY，我转向了动画的编程创建。

在尝试将这个XAML动画转换为c#时，我遇到了一个问题，我的目标无法找到:

未检测到已安装的组件。'r'n'r'n无法解析TargetName Digit1.

如果我调用Storyboard.SetTarget()而不是Storyboard.SetTargetName()，我不再得到这个异常，但仍然没有在屏幕上发生任何事情。

谁能告诉我我在这个翻译中做错了什么?

<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
      mc:Ignorable="d">
    <Page.Resources>
        <x:Double x:Key="OdometerMoveUpDistance">-101</x:Double>
        <Storyboard x:Name="OdometerUpStoryboard">
            <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(CompositeTransform.TranslateY)"
                                           Storyboard.TargetName="Digit1">
                <EasingDoubleKeyFrame KeyTime="0" Value="0" />
                <EasingDoubleKeyFrame KeyTime="0:0:1" Value="{StaticResource OdometerMoveUpDistance}" />
            </DoubleAnimationUsingKeyFrames>
        </Storyboard>
    </Page.Resources>
    <Canvas x:Name="Odometer" Width="100" Height="100">
        <TextBlock x:Name="Digit1" FontSize="100" Text="8">
            <TextBlock.RenderTransform><CompositeTransform /></TextBlock.RenderTransform>
        </TextBlock>
    </Canvas>
</Page>

private void Btn_Click(object sender, RoutedEventArgs e)
{
    DoubleAnimationUsingKeyFrames digitUp = CreateOdometerdigitAnim(this.Digit1, 0, -101);
    var storyboard = new Storyboard();
    storyboard.Children.Add(digitUp);
    storyboard.Begin(); // Exception happens on this line
}
private DoubleAnimationUsingKeyFrames CreateOdometerdigitAnim(TextBlock digit, double startPos, double endPos)
{
    var start = new EasingDoubleKeyFrame();
    start.KeyTime = KeyTime.FromTimeSpan(TimeSpan.FromMilliseconds(0));
    start.Value = startPos;
    var end = new EasingDoubleKeyFrame();
    end.KeyTime = KeyTime.FromTimeSpan(TimeSpan.FromMilliseconds(1000));
    end.Value = endPos;
    var anim = new DoubleAnimationUsingKeyFrames();
    anim.KeyFrames.Add(start);
    anim.KeyFrames.Add(end);
    Storyboard.SetTargetProperty(anim, "(UIElement.RenderTransform).(CompositeTransform.TranslateY)");
    Storyboard.SetTargetName(anim, digit.Name);
    /* Using SetTarget instead of SetTargetName throws no exception but still does not animate */
    // Storyboard.SetTarget(anim, digit);
    return anim;
}