我在xaml文件中创建了一个动画故事板.那个故事板开始于Button.Click.但是为了停止动画,我试图在代码背后的自定义事件上停止故事板.
代码没有抛出任何异常但是当我的事件被触发时,动画仍然继续.
代码没有抛出任何异常但是当我的事件被触发时,动画仍然继续.
我认为问题在于Stop方法.停止需要与开始动画相同的对象来停止它.但是这里的故事板是从WPF xaml开始的,我在后面的代码中停止它.
任何解决方案,如何在代码中获取Xaml对象或任何替代解决方案？
XAML代码：
<Canvas.Triggers>
<EventTrigger RoutedEvent="Button.Click" SourceName="ScanButton">
<EventTrigger.Actions>
<BeginStoryboard >
<Storyboard Name="MovingServer" Storyboard.TargetName="ImageMove" RepeatBehavior="Forever" >
<DoubleAnimation Storyboard.TargetProperty="(Canvas.Left)" Duration="0:0:2" From="30" To="300" BeginTime="0:0:0" />
<DoubleAnimation Storyboard.TargetProperty="(Canvas.Left)" Duration="0:0:5" From="300" To="300" BeginTime="0:0:5" />
<DoubleAnimation Storyboard.TargetProperty="(Canvas.Left)" Duration="0:0:2" From="300" To="600" BeginTime="0:0:7" />
<DoubleAnimation Storyboard.TargetProperty="Opacity" Duration="0:0:2" From="1" To="0" BeginTime="0:0:7" />
</Storyboard>
</BeginStoryboard>
</EventTrigger.Actions>
</EventTrigger>
代码背后：
private void EventPublisher_OnScanningFinish(object sender,EventArgs args)
{
Dispatcher.Invoke(DispatcherPriority.Normal,(Action)delegate() { this.StopScanningAnimation(); });
}
private void StopScanningAnimation()
{
ServerView.StoryBoardServerScrolling.Stop(this); //---------- Not Working
//this.ServerView.Server1Static.Visibility = System.Windows.Visibility.Hidden;
//this.ServerView.Server2Static.Visibility = System.Windows.Visibility.Hidden;
//this.ServerView.Server3Scrolling.Visibility = System.Windows.Visibility.Hidden;
//this.ServerView.SearchingGlass.Visibility = System.Windows.Visibility.Hidden;
}
解决方法
将故事板定义为静态资源,
<MyControl.Resources>
<Storyboard Key="MovingServer" Storyboard.TargetName="ImageMove" RepeatBehavior="Forever" >
<DoubleAnimation Storyboard.TargetProperty="(Canvas.Left)" Duration="0:0:2" From="30" To="300" BeginTime="0:0:0" />
<DoubleAnimation Storyboard.TargetProperty="(Canvas.Left)" Duration="0:0:5" From="300" To="300" BeginTime="0:0:5" />
<DoubleAnimation Storyboard.TargetProperty="(Canvas.Left)" Duration="0:0:2" From="300" To="600" BeginTime="0:0:7" />
<DoubleAnimation Storyboard.TargetProperty="Opacity" Duration="0:0:2" From="1" To="0" BeginTime="0:0:7" />
</Storyboard>
</MyControl.Resources>
并从您的后端代码引用它,如下所示：
StoryBoard board = (StoryBoard)this.FindResource("MovingServer");
board.stop();
从按钮的“click”事件开始动画(我不知道你是否在xaml中定义了,但是如果你这样做的话,这是怎么做的)
<Button x:Name="ScanButton" onClick="Scanbutton_Click"></button>
protected void Scanbutton_Click(object Sender,EventArgs e)
{
StoryBoard board = (StoryBoard)this.FindResource("MovingServer");
board.start();
}
