Timeline.Completed Evento

public:
 event EventHandler ^ Completed;

public event EventHandler Completed;

member this.Completed : EventHandler 

Public Custom Event Completed As EventHandler 

Tipo evento

Esempio

Nell'esempio seguente vengono usati due Storyboard oggetti per creare una transizione di animazione tra due immagini, archiviate usando ImageSource oggetti e visualizzate usando un Image controllo . Uno storyboard riduce il controllo immagine fino a quando non scompare. Al termine, il vecchio ImageSource viene scambiato con l'altro ImageSourcee un secondo storyboard che espande il controllo immagine fino a quando non viene nuovamente ridimensionato.

<!-- TimelineCompletedExample.xaml 
     This example creates an animated transition between
     two images. When the user clicks the Start Transition button,
     a storyboard shrinks an image until it disappears. 
     The Completed event is used to notify the class when this
     storyboard has completed. The code behind file handles
     this event by swapping the image and making it visible again.
-->
<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  x:Class="SDKSample.TimelineCompletedExample"
  WindowTitle="Timeline Completed Example"
  Loaded="exampleLoaded">
  <Page.Resources>

    <!-- A simple picture of a rectangle. -->
    <DrawingImage x:Key="RectangleDrawingImage">
      <DrawingImage.Drawing>
        <DrawingGroup>
          <GeometryDrawing Brush="White">
            <GeometryDrawing.Geometry>
              <RectangleGeometry Rect="0,0,100,100"  />
            </GeometryDrawing.Geometry>
          </GeometryDrawing>
          <GeometryDrawing Brush="Orange">
            <GeometryDrawing.Geometry>
              <RectangleGeometry Rect="25,25,50,50"  />
            </GeometryDrawing.Geometry>
          </GeometryDrawing>
        </DrawingGroup>
      </DrawingImage.Drawing>
    </DrawingImage>

    <!-- A simple picture of a cirlce. -->
    <DrawingImage x:Key="CircleDrawingImage">
      <DrawingImage.Drawing>
        <DrawingGroup>
          <GeometryDrawing Brush="White">
            <GeometryDrawing.Geometry>
              <RectangleGeometry Rect="0,0,100,100"  />
            </GeometryDrawing.Geometry>
          </GeometryDrawing>
          <GeometryDrawing>
            <GeometryDrawing.Geometry>
              <EllipseGeometry Center="50,50" RadiusX="25" RadiusY="25"  />
            </GeometryDrawing.Geometry>
            <GeometryDrawing.Brush>
              <RadialGradientBrush GradientOrigin="0.75,0.25" Center="0.75,0.25">
                <GradientStop Offset="0.0" Color="White" />
                <GradientStop Offset="1.0" Color="LimeGreen" />
              </RadialGradientBrush>
            </GeometryDrawing.Brush>
          </GeometryDrawing>
        </DrawingGroup>
      </DrawingImage.Drawing>
    </DrawingImage>

    <!-- Define the storyboard that enlarges the image.
         This storyboard is applied using code when
         ZoomOutStoryboard completes. -->
    <Storyboard x:Key="ZoomInStoryboardResource">
      <DoubleAnimation 
        Storyboard.TargetName="AnimatedImageScaleTranform" 
        Storyboard.TargetProperty="ScaleX" 
        Duration="0:0:5" To="1" />
      <DoubleAnimation 
       Storyboard.TargetName="AnimatedImageScaleTranform" 
       Storyboard.TargetProperty="ScaleY" 
       Duration="0:0:5" To="1" />
    </Storyboard>
  </Page.Resources>

  <StackPanel Margin="20" >
    <Border 
      BorderBrush="Gray" BorderThickness="2" 
      HorizontalAlignment="Center" VerticalAlignment="Center">

      <!-- Displays the current ImageSource. -->
      <Image
        Name="AnimatedImage" 
        Width="200" Height="200"
        RenderTransformOrigin="0.5,0.5">
        <Image.RenderTransform>
          <ScaleTransform x:Name="AnimatedImageScaleTranform" 
            ScaleX="1" ScaleY="1" />
        </Image.RenderTransform>
      </Image>
    </Border>


    <!-- This StackPanel contains buttons that control the storyboard. -->
    <StackPanel Orientation="Horizontal" Margin="0,30,0,0">

      <Button Name="BeginButton">Start Transition</Button>
      <Button Name="SkipToFillButton">Skip To Fill</Button>
      <Button Name="StopButton">Stop</Button>

      <StackPanel.Triggers>

        <!-- Begin the storyboard that shrinks the image. After the storyboard
             completes, -->
        <EventTrigger RoutedEvent="Button.Click" SourceName="BeginButton">
          <BeginStoryboard Name="ZoomOutBeginStoryboard">
            <Storyboard x:Name="ZoomOutStoryboard" 
              Completed="zoomOutStoryboardCompleted" FillBehavior="Stop">
              <DoubleAnimation 
                Storyboard.TargetName="AnimatedImageScaleTranform" 
                Storyboard.TargetProperty="ScaleX" 
                Duration="0:0:5" To="0" FillBehavior="Stop" />
              <DoubleAnimation 
               Storyboard.TargetName="AnimatedImageScaleTranform" 
               Storyboard.TargetProperty="ScaleY" 
               Duration="0:0:5" To="0" FillBehavior="Stop" />
            </Storyboard>
          </BeginStoryboard>
        </EventTrigger>

        <!-- Advances ZoomOutStoryboard to its fill period.
             This action triggers the Completed event. -->
        <EventTrigger RoutedEvent="Button.Click" SourceName="SkipToFillButton">
          <SkipStoryboardToFill BeginStoryboardName="ZoomOutBeginStoryboard" />
        </EventTrigger>

        <!-- Stops the storyboard. This action does not
             trigger the completed event. -->
        <EventTrigger RoutedEvent="Button.Click" SourceName="StopButton">
          <StopStoryboard BeginStoryboardName="ZoomOutBeginStoryboard" />
        </EventTrigger>
      </StackPanel.Triggers>
    </StackPanel>
  </StackPanel>
</Page>

Commenti

Se questa sequenza temporale è la sequenza temporale radice di un albero della sequenza temporale, ha completato la riproduzione dopo che raggiunge la fine del periodo attivo (che include ripetizioni) e tutti i relativi figli hanno raggiunto la fine dei periodi attivi. Se questa sequenza temporale è una sequenza temporale figlio, viene considerata completamente terminata la riproduzione quando la sequenza temporale radice dell'albero della sequenza temporale a cui appartiene raggiunge la fine del periodo attivo e tutte le sequenze temporali figlio hanno terminato di giocare.

L'arresto di una sequenza temporale non attiva l'evento completato, ma lo ignora nel periodo di riempimento.

Il Object parametro del EventHandler gestore eventi è l'oggetto della sequenza temporale.Clock

Anche se questo gestore eventi sembra essere associato a una sequenza temporale, viene effettivamente registrato con l'oggetto Clock creato per questa sequenza temporale. Per altre informazioni, vedere Cenni preliminari sugli eventi di intervallo.

Si applica a