故事板不起作用

我想旋转以及放大并缩小TextBlock。我想使用Stroyboard并在代码隐藏文件中编写代码。故事板不起作用

<Window x:Class="WpfApplication1.MainWindow" 
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
     Title="MainWindow" Height="350" Width="525" Loaded="Window_Loaded_1"> 
    <Grid> 
     <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Center"> 
      <TextBlock Name="rotatingTextBlock" Text="Hello" RenderTransformOrigin="0.5, 0.5"/> 
      <TextBlock Text=" World!"/> 
     </StackPanel> 
    </Grid> 
</Window>

private void Window_Loaded_1(object sender, RoutedEventArgs e) 
{ 
    TransformGroup tc = new TransformGroup(); 
    RotateTransform rotateTransform = new RotateTransform(); 
    tc.Children.Add(rotateTransform); 
    ScaleTransform scaleTransform = new ScaleTransform(); 
    tc.Children.Add(scaleTransform); 

    rotatingTextBlock.RenderTransform = tc; 

    Storyboard storyboard = new Storyboard(); 
    DoubleAnimation rotateAnimation = new DoubleAnimation(0, 360, new Duration(TimeSpan.FromSeconds(2))); 
    rotateAnimation.AccelerationRatio = 0.15; 
    rotateAnimation.DecelerationRatio = 0.15; 
    Storyboard.SetTarget(rotateAnimation, rotateTransform); 
    Storyboard.SetTargetProperty(rotateAnimation, new PropertyPath(RotateTransform.AngleProperty)); 
    storyboard.Children.Add(rotateAnimation); 

    DoubleAnimation scaleAnimation = new DoubleAnimation(1, 1.2, new Duration(TimeSpan.FromSeconds(1))); 
    scaleAnimation.AccelerationRatio = 0.5; 
    scaleAnimation.DecelerationRatio = 0.5; 
    scaleAnimation.AutoReverse = true; 
    Storyboard.SetTarget(scaleAnimation, scaleTransform); 
    Storyboard.SetTargetProperty(scaleAnimation, new PropertyPath(ScaleTransform.ScaleXProperty)); 
    storyboard.Children.Add(scaleAnimation); 

    storyboard.Begin(); 
}

我的代码不能正常工作。我错过了什么吗？

来源

2013-02-16 Gqqnbig

我想你必须将TextBlock设置为动画目标：'Storyboard.SetTarget（scaleAnimation，rotatingTextBlock）;'。你也可以在xaml中创建你的Storyboard，并用'（（Storyboard）FindResource（“SBName”））在Code-Behind中调用它。开始（）;' – 2013-02-16 13:55:13

嗯，你的见解有帮助。谢谢！但我想知道为什么我不能将RotateTransform设置为目标。 – Gqqnbig 2013-02-16 14:03:48

根据Storyboard.SetTarget only works on UIElements, but throws no exception似乎你不能直接定位Transform。如果你用正确的PropertyPath针对TextBlock它的工作原理：

Storyboard storyboard = new Storyboard(); 
DoubleAnimation rotateAnimation = new DoubleAnimation(0, 360, new Duration(TimeSpan.FromSeconds(2))); 
rotateAnimation.AccelerationRatio = 0.15; 
rotateAnimation.DecelerationRatio = 0.15; 
Storyboard.SetTarget(rotateAnimation, rotatingTextBlock); 
Storyboard.SetTargetProperty(rotateAnimation, new PropertyPath("RenderTransform.Children[0].(RotateTransform.Angle)")); 
storyboard.Children.Add(rotateAnimation); 

DoubleAnimation scaleAnimation = new DoubleAnimation(1, 1.2, new Duration(TimeSpan.FromSeconds(1))); 
scaleAnimation.AccelerationRatio = 0.5; 
scaleAnimation.DecelerationRatio = 0.5; 
scaleAnimation.AutoReverse = true; 
Storyboard.SetTarget(scaleAnimation, rotatingTextBlock); 
Storyboard.SetTargetProperty(scaleAnimation, new PropertyPath("RenderTransform.Children[1].(ScaleTransform.ScaleX)")); 
storyboard.Children.Add(scaleAnimation);

来源

2013-02-16 14:37:01 LPL

以下工作：

Storyboard storyboard = new Storyboard(); 
DoubleAnimation rotateAnimation = new DoubleAnimation(0, 360, new Duration(TimeSpan.FromSeconds(2))); 
rotateAnimation.AccelerationRatio = 0.15; 
rotateAnimation.DecelerationRatio = 0.15; 
try { UnregisterName("rotateTransform"); } 
catch { } 
finally { RegisterName("rotateTransform", rotateTransform); } 
Storyboard.SetTargetName(rotateAnimation, "rotateTransform"); 
Storyboard.SetTargetProperty(rotateAnimation, new PropertyPath(RotateTransform.AngleProperty)); 
storyboard.Children.Add(rotateAnimation); 

DoubleAnimation scaleAnimation = new DoubleAnimation(1, 1.2, new Duration(TimeSpan.FromSeconds(1))); 
scaleAnimation.AccelerationRatio = 0.5; 
scaleAnimation.DecelerationRatio = 0.5; 
scaleAnimation.AutoReverse = true; 
try { UnregisterName("scaleTransform"); } 
catch { } 
finally { RegisterName("scaleTransform", scaleTransform); } 
Storyboard.SetTargetName(scaleAnimation, "scaleTransform"); 
Storyboard.SetTargetProperty(scaleAnimation, new PropertyPath(ScaleTransform.ScaleXProperty)); 
storyboard.Children.Add(scaleAnimation); 

storyboard.Begin(this);

不过，我想LPL的解决办法，也适用 - 如果LPL的方法将适用于任何“抽象“目标，那么我认为我更喜欢它作为解决方案（以节省注册名称等）。（问题是我不知道如何把这些属性路径放在一起！）

来源

2016-01-07 15:29:55

故事板不起作用

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