如何:在腳本開始後使用事件觸發程式進行控制How to: Use Event Triggers to Control a Storyboard After It Starts

此示例演示如何在 啟動後控制StoryboardThis example shows how to control a Storyboard after it starts. 要使用StoryboardXAMLXAML開始 ,BeginStoryboard使用 , 將動畫分發到它們為物件和屬性設置動畫,然後啟動分鏡腳本。To start a Storyboard by using XAMLXAML, use BeginStoryboard, which distributes the animations to the objects and properties they animate and then starts the storyboard. 如果通過指定BeginStoryboard名稱Name的屬性來命名,則可以將其製作為可控制的分鏡腳本。If you give BeginStoryboard a name by specifying its Name property, you make it a controllable storyboard. 然後,您可以在分鏡腳本啟動後以對話模式控制它。You can then interactively control the storyboard after it starts.

將以下分鏡腳本操作與EventTrigger物件一起使用來控制分鏡腳本。Use the following storyboard actions together with EventTrigger objects to control a storyboard.

範例Example

下面的示例使用可控的分鏡腳本操作來交互控制分鏡腳本。The following example uses controllable storyboard actions to interactively control a storyboard.

注意

要查看使用代碼控制分鏡腳本的示例,請參閱在分鏡腳本開始使用其交互方法後對其進行控制To see an example of controlling a storyboard by using code, see Control a Storyboard After It Starts Using Its Interactive Methods.

<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  WindowTitle="Controlling a Storyboard" >
  <StackPanel Margin="20" >

    <!-- This rectangle is animated. -->
    <Rectangle Name="myRectangle"
      Width="100" Height="20" Margin="12,0,0,5" Fill="#AA3333FF" HorizontalAlignment="Left" />

    <!-- This StackPanel contains all the Buttons. -->
    <StackPanel Orientation="Horizontal" Margin="0,30,0,0">

      <Button Name="BeginButton">Begin</Button>
      <Button Name="PauseButton">Pause</Button>
      <Button Name="ResumeButton">Resume</Button>
      <Button Name="SeekButton">Seek</Button>
      <Button Name="SkipToFillButton">Skip To Fill</Button>
      <Button Name="SetSpeedRatioButton">Triple Speed</Button>
      <Button Name="StopButton">Stop</Button>

      <StackPanel.Triggers>
        
        <!-- Begin the Storyboard -->
        <EventTrigger RoutedEvent="Button.Click" SourceName="BeginButton">
          <BeginStoryboard Name="MyBeginStoryboard">
            <Storyboard >
              <DoubleAnimation 
                Storyboard.TargetName="myRectangle" 
                Storyboard.TargetProperty="Width" 
                Duration="0:0:5" From="100" To="500" />
            </Storyboard>
          </BeginStoryboard>
        </EventTrigger>

        <!-- Pause the Storyboard -->
        <EventTrigger RoutedEvent="Button.Click" SourceName="PauseButton">
          <PauseStoryboard BeginStoryboardName="MyBeginStoryboard" />
        </EventTrigger>

        <!-- Resume the Storyboard -->
        <EventTrigger RoutedEvent="Button.Click" SourceName="ResumeButton">
          <ResumeStoryboard BeginStoryboardName="MyBeginStoryboard" />
        </EventTrigger>
 
         <!-- Seek one second into the storyboard's active period. -->
         <EventTrigger RoutedEvent="Button.Click" SourceName="SeekButton">
           <SeekStoryboard 
            BeginStoryboardName="MyBeginStoryboard" 
            Offset="0:0:1" Origin="BeginTime" />
        </EventTrigger>   

        <!-- Skip to Fill -->
        <EventTrigger RoutedEvent="Button.Click" SourceName="SkipToFillButton">
          <SkipStoryboardToFill BeginStoryboardName="MyBeginStoryboard" />
        </EventTrigger>

        <!-- Stop the Storyboard -->
        <EventTrigger RoutedEvent="Button.Click" SourceName="StopButton">
          <StopStoryboard BeginStoryboardName="MyBeginStoryboard" />
        </EventTrigger>
        
        <!-- Triple the speed of the Storyboard -->
        <EventTrigger RoutedEvent="Button.Click" SourceName="SetSpeedRatioButton">
          <SetStoryboardSpeedRatio SpeedRatio="3" BeginStoryboardName="MyBeginStoryboard" />
        </EventTrigger>
      </StackPanel.Triggers>
    </StackPanel>
  </StackPanel>
</Page>

有關其他示例,請參閱動畫示例庫For additional examples, see the Animation Example Gallery.

另請參閱See also