如何在UWP中实现TextBlock缩放动画

<TextBlock x:Name="myTextBlock" Text="Hello World!" FontSize="20"/>

using Windows.UI.Xaml.Media.Animation;

Storyboard storyboard = new Storyboard();
DoubleAnimation animation = new DoubleAnimation();
Storyboard.SetTarget(animation, myTextBlock);

animation.From = 1.0; // 起始缩放比例
animation.To = 0.5; // 结束缩放比例
animation.Duration = new Duration(TimeSpan.FromSeconds(1)); // 动画持续时间

storyboard.Children.Add(animation);
storyboard.Begin();

<Grid>
    <TextBlock x:Name="myTextBlock" Text="Hello World!" FontSize="20"/>
</Grid>

using Windows.UI.Xaml.Media.Animation;

// ...

Storyboard storyboard = new Storyboard();
DoubleAnimation animation = new DoubleAnimation();
Storyboard.SetTarget(animation, myTextBlock);

animation.From = 1.0;
animation.To = 0.5;
animation.Duration = new Duration(TimeSpan.FromSeconds(1));

storyboard.Children.Add(animation);
storyboard.Begin();