C# 在silverlight中启动动画

我创建了一个Silverlight页面，它有两个动画：一个在页面打开时显示，另一个在页面关闭前显示。我还有另一个主页，其中有一个导航框架，可以容纳这些页面

单击菜单按钮时，切换工作正常。我有一个页面加载的eventhandler，它显示第一个动画，但是我对“消失动画”的调用有问题

我在主页上做了以下事情：

menuButtonClicked = (HyperlinkButton)sender;
            switch (menuButtonClicked.Name)
            {
                case "homeButton":
                    {

                        About aboutPage = (About)ContentFrame.Content;
                        aboutPage.DisappearAnimation.Begin();
                    }
                    break;
                case "aboutButton":
                    {
                        Home homePage = (Home)ContentFrame.Content;
                        homePage.DisappearAnimation.Begin();
                    }
                    break;
            }

但是我得到一个错误，targetProperty无法解析

下面是如何定义动画的

<Storyboard x:Name="DisappearAnimation">
    <ObjectAnimationUsingKeyFrames
        Storyboard.TargetProperty="(UIElement.Visibility)"
        Storyboard.TargetName="PageScrollViewer">
        <DiscreteObjectKeyFrame KeyTime="0">
            <DiscreteObjectKeyFrame.Value>
                <Visibility>Visible</Visibility>
            </DiscreteObjectKeyFrame.Value>
        </DiscreteObjectKeyFrame>
    </ObjectAnimationUsingKeyFrames>
    <DoubleAnimationUsingKeyFrames
        Storyboard.TargetProperty="(UIElement.RenderTransform)
              .(CompositeTransform.TranslateY)"
        Storyboard.TargetName="PageScrollViewer">
        <EasingDoubleKeyFrame KeyTime="0"
                              Value="0"/>
        <EasingDoubleKeyFrame KeyTime="0:0:0.5"
                              Value="-14"/>
        <EasingDoubleKeyFrame KeyTime="0:0:1"
                              Value="442"/>
    </DoubleAnimationUsingKeyFrames>
    <DoubleAnimationUsingKeyFrames
        Storyboard.TargetProperty="(UIElement.Opacity)"
        Storyboard.TargetName="PageScrollViewer">
        <EasingDoubleKeyFrame KeyTime="0:0:0.5"
                              Value="1"/>
        <EasingDoubleKeyFrame KeyTime="0:0:1"
                              Value="0"/>
    </DoubleAnimationUsingKeyFrames>
</Storyboard>

但它也不起作用。。。有人知道我如何调用在另一个页面上定义的开始动画吗

编辑： 下面是我为解决这个问题所做的工作，让事情变得更清楚一点。 Home、About、Comet是我向用户显示的xaml页面，ContentFrame是承载这些页面的navigationFrame

flipanimation只是将导航框翻转360度，使其看起来更漂亮：）

现在我只想弄明白为什么消失动画在不到半秒的时间内完成。。。但是动画开始的顺序（当前站点消失，下一个开始它的显示动画）是可以的

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希望这对其他人有所帮助

两个页面中都有名为PageScrollViewer的控件吗？我有点保留了这个问题…为什么不为按钮/菜单按钮连接一个RelayCommand或单击事件，而不是使用开关/案例？我首先让它们都使用一个事件处理程序。。。现在我用不同的，所以我摆脱了开关盒。。。我现在使用switch case的唯一原因是确定当前活动的页面，以便我可以开始它们的消失动画。。。我现在把它改成了最后一个版本

aboutPage.SetValue(Storyboard.TargetNameProperty, "PageScrollViewer");

private void HomeButton_MouseLeftButtonDown(object sender, RoutedEventArgs e)
    {
        if (sender != null && menuButtonClicked != (HyperlinkButton)sender)
        {
            ChangeMenuState(sender);
            ChangePage(currentPage);
            currentPage = CurrentPage.Home;
        }
    }

private void AboutButton_MouseLeftButtonDown
                        (object sender, RoutedEventArgs e)
{
    if (sender != null && menuButtonClicked != (HyperlinkButton)sender)
    {
        ChangeMenuState(sender);
        ChangePage(currentPage);
        currentPage = CurrentPage.About;
    }
}

private void ContactButton_MouseLeftButtonDown
                 (object sender, RoutedEventArgs e)
{
    if (sender != null && menuButtonClicked != (HyperlinkButton)sender)
    {
        ChangeMenuState(sender);
        ChangePage(currentPage);
        currentPage = CurrentPage.Contact;
    }
}

private void ChangePage(CurrentPage currentPage)
{
        switch (currentPage)
        {
            case CurrentPage.Welcome:
                {
                    ContentHolder.Visibility = Visibility.Visible;
                    FlipAnimation.Stop();
                    FlipAnimation.SetValue(Storyboard.TargetNameProperty, 
                                              "ContentHolder");
                    FlipAnimation.Begin();
                }
                break;
            case CurrentPage.Home:
                {
                    ContentHolder.Visibility = Visibility.Visible;
                    Home homePage = (Home)ContentFrame.Content;
                    homePage.DisappearAnimation.Begin();
                    homePage.DisappearAnimation.Completed += StopStoryboard;
                }
                break;
            case CurrentPage.About:
                {
                    ContentHolder.Visibility = Visibility.Visible;
                    About aboutPage = (About)ContentFrame.Content;
                    aboutPage.DisappearAnimation.Begin();
                    aboutPage.DisappearAnimation.Completed += StopStoryboard;
                }
                break;
            case CurrentPage.Contact:
                {
                    ContentHolder.Visibility = Visibility.Visible;
                    Contact contactPage = (Contact)ContentFrame.Content;
                    contactPage.DisappearAnimation.Begin();
                    contactPage.DisappearAnimation.Completed += StopStoryboard;
                }
                break;
    }
}

private void ChangeMenuState(object sender)
    {
        VisualStateManager.GoToState(sender as HyperlinkButton, 
                                       "ActiveLink", true);
        (sender as HyperlinkButton).Foreground = 
               new SolidColorBrush(Colors.White);
        MouseEnterAnimation.Stop();
        if (menuButtonClicked != null)
        {
            VisualStateManager.GoToState(menuButtonClicked, 
                                               "InactiveLink", true);
            MouseLeaveAnimation.Stop();
            MouseLeaveAnimation.SetValue(Storyboard.TargetNameProperty,
                menuButtonClicked.Name);
            MouseLeaveAnimation.Begin();
        }
        menuButtonClicked = (HyperlinkButton)sender;
    }

    private void StopStoryboard(object sender, EventArgs args)
    {
        Storyboard storyboard = (Storyboard)sender;
        storyboard.Stop();

        FlipAnimation.Stop();
        FlipAnimation.SetValue(Storyboard.TargetNameProperty,
                                           "ContentHolder");
        FlipAnimation.Begin();
    }