停止WPF动画，故事情节开始在XAML但在codebehind停止呢？ [英] Stop WPF animation, storyboard begin in xaml but stopping it in codebehind?
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问题描述
我在创建XAML文件的动画故事板。这个故事板开始于Button.Click。但要停止我试图在code我的自定义事件停止故事板后面的动画。
在code未抛出任何异常，但是当我的事件被解雇了动画却还在继续下去。
我认为这个问题是停止方法。停止要求开始动画停止它同一个对象。但这里的故事板开始WPF XAML，我在code背后停止它。
任何解决方案，如何让XAML中的对象身后code或任何对此的替代解决方案？
XAML code：
＆LT; Canvas.Triggers＆GT;
＆LT;的EventTrigger RoutedEvent =Button.ClickSOURCENAME =ScanButton＆GT;
＆LT; EventTrigger.Actions＆GT;
＆LT; BeginStoryboard＆GT;
＆LT;情节提要NAME =MovingServerStoryboard.TargetName =ImageMove的repeatBehavior =永远＆GT;
＆所述; DoubleAnimation是Storyboard.TargetProperty =（Canvas.Left）持续时间=0：0：2从=30为=300的BeginTime =0：0：0/＆GT;
＆所述; DoubleAnimation是Storyboard.TargetProperty =（Canvas.Left）持续时间=0：0：5从=300为了=300的BeginTime =0：0：5/＆GT;
＆所述; DoubleAnimation是Storyboard.TargetProperty =（Canvas.Left）持续时间=0：0：2从=300为了=600的BeginTime =0：0：7/＆GT;
＆所述; DoubleAnimation是Storyboard.TargetProperty =透明度持续时间=0：0：2从=1要=0的BeginTime =0：0：7/＆GT;
＆LT; /故事板＆GT;
＆LT; / BeginStoryboard＆GT;
＆LT; /EventTrigger.Actions>
＆LT; /＆的EventTrigger GT;
code背后：
私人无效EventPublisher_OnScanningFinish（对象发件人，EventArgs参数）
{
Dispatcher.Invoke（DispatcherPriority.Normal，（动作）委托（）{this.StopScanningAnimation（）;}）;
} 私人无效StopScanningAnimation（）
{ ServerView.StoryBoardServerScrolling.Stop（本）; // ----------不工作 //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;
}
解决方案
我感谢蒂莫西给了不错的主意。在这里，我张贴我的工作code
/ *创建这个资源为全球该perticular XAML。不需要是把它的App.xaml
MyControl可能是窗口或页面或用户控件* / ＆LT; MyControl.Resources＆GT;
＆LT;情节提要X：键=MovingServerStoryboard.TargetName =MYIMAGE的repeatBehavior =永远＆GT;
＆所述; DoubleAnimation是Storyboard.TargetProperty =（Canvas.Left）持续时间=0：0：2从=30为=300的BeginTime =0：0：0/＆GT;
＆所述; DoubleAnimation是Storyboard.TargetProperty =（Canvas.Left）持续时间=0：0：5从=300为了=300的BeginTime =0：0：5/＆GT;
＆所述; DoubleAnimation是Storyboard.TargetProperty =（Canvas.Left）持续时间=0：0：2从=300为了=600的BeginTime =0：0：7/＆GT;
＆所述; DoubleAnimation是Storyboard.TargetProperty =透明度持续时间=0：0：2从=1要=0的BeginTime =0：0：7/＆GT;
＆LT; /故事板＆GT;
＆LT; /MyControl.Resources>/ *＆LT;！ - 现在使用这些动画资源，在那里你想要的地方。您可以使用它作为静态的资源，并从code开始停止动画背后或将其作为触发事件 - ＆GT; * // *＆LT;！ - 静态资源 - ＆GT; * /
＆LT;＆帆布GT;
＆lt;图像Canvas.Left =0Canvas.Top = - 2HEIGHT =32NAME =MYIMAGEWIDTH =32源=/ CCTrayHelper;组件/图片/ ServerIcon.png能见度=隐藏/＆GT;
＆LT; Canvas.Resources＆GT;
＆LT; BeginStoryboard X：键=serverAnimate故事板={StaticResource的MovingServer}/＆GT;
＆LT; /Canvas.Resources>
＆LT; /帆布＆GT;
＆LT;按钮X：NAME =ScanButton的onClick =Scanbutton_Click/＆GT;/ * ************ ****************** * / / * code后面的启动/停止动画* ///首先获取当前对象的资源价值，所以，当你开始/停止动画，这对当前对象只工作
故事板sbImageAnimate =（故事板）this.ServerView.FindResource（MovingServer）;//开始上按钮单击动画
保护无效Scanbutton_Click（对象发件人，EventArgs的发送）
{
this.MyImage.Visibility = System.Windows.Visibility.Visible;
sbImageAnimate.Begin（）;
} //我自己甚至停止动画。你可以用它在任何情况下
私人无效EventPublisher_OnFinish（对象发件人，EventArgs参数）
{
Dispatcher.Invoke（DispatcherPriority.Normal，（动作）委托（）{this.StopScanningAnimation（）;}）;
} 私人无效StopScanningAnimation（）
{
sbImageAnimate.Stop（）;
this.MyImage.Visibility = System.Windows.Visibility.Hidden;
}
I created an animation storyboard in xaml file. That story board begins on Button.Click. But to stop the animation I am trying to stop storyboard on my custom event in code behind. The code is not throwing any exception but When my event got fired the animation still goes continue.
I think the issue is with the Stop method. Stop required the same object that begins the animation to stop it. But here the storyboard is begin in WPF xaml and I am stopping it in code behind.
Any Solution, how to get Xaml object in code behind or Any alternative solution for this??
XAML CODE:
<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>
Code Behind:
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;
}
解决方案
I am thankful for Timothy for giving nice Idea. Here I am posting my working code
/*create this resources as global to that perticular xaml. Need not to be put it in App.xaml
MyControl could be Window or Page or UserControl */
<MyControl.Resources>
<Storyboard x:Key="MovingServer" Storyboard.TargetName="MyImage" 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>
/* <!-- Now use those animation resources, the place where you want. You can use it as static resource and begin stop animation from code behind OR use it as trigger event --> */
/* <!-- Static resources--> */
<Canvas>
<Image Canvas.Left="0" Canvas.Top="-2" Height="32" Name="MyImage" Width="32" Source="/CCTrayHelper;component/Images/ServerIcon.png" Visibility="Hidden"/>
<Canvas.Resources>
<BeginStoryboard x:Key="serverAnimate" Storyboard="{StaticResource MovingServer}" />
</Canvas.Resources>
</Canvas>
<Button x:Name="ScanButton" onClick="Scanbutton_Click" />
/* ****************************************************************** */
/* Code behind to start/stop animation*/
//Get the resource value first on current object, so that when you start/stop the animation, it work only on current object
Storyboard sbImageAnimate = (Storyboard)this.ServerView.FindResource("MovingServer");
//Start the animation on Button Click
protected void Scanbutton_Click(object Sender, EventArgs e)
{
this.MyImage.Visibility = System.Windows.Visibility.Visible;
sbImageAnimate.Begin();
}
//Stop animation on my own even. You can use it on any event
private void EventPublisher_OnFinish(object sender, EventArgs args)
{
Dispatcher.Invoke(DispatcherPriority.Normal, (Action)delegate() { this.StopScanningAnimation(); });
}
private void StopScanningAnimation()
{
sbImageAnimate.Stop();
this.MyImage.Visibility = System.Windows.Visibility.Hidden;
}
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