故事板动画

Question

我制作了一个小型 WPF 应用程序来滑入和滑出 UserControl，我遇到的问题是当 UserControl 动画滑入时，然后我单击按钮滑入另一个 UserControl，它们都会滑出 - 我不确定为什么会这样？

public UserControl1()
{
    InitializeComponent();
}

public void SlideIn(UserControl uc)
{
    ThicknessAnimation tAnimation = new ThicknessAnimation();
    tAnimation.Duration = new Duration(TimeSpan.FromSeconds(0.5));
    tAnimation.From = new Thickness(500, 0, -500, 0);
    tAnimation.To = new Thickness(0);
    tAnimation.DecelerationRatio = 0.9;

    Storyboard.SetTargetName(tAnimation, uc.Name);
    Storyboard.SetTargetProperty(tAnimation, new PropertyPath(MarginProperty));

    Storyboard storyboard = new Storyboard();
    storyboard.Children.Add(tAnimation);
    storyboard.Begin(uc);
    this.Content = uc;
}

public void SlideOut(UserControl uc)
{
    ThicknessAnimation tAnimation = new ThicknessAnimation();
    tAnimation.Duration = new Duration(TimeSpan.FromSeconds(0.5));
    tAnimation.To = new Thickness(-500, 0, 500, 0);
    tAnimation.DecelerationRatio = 0.9;

    Storyboard.SetTargetName(tAnimation, uc.Name);
    Storyboard.SetTargetProperty(tAnimation, new PropertyPath(MarginProperty));

    Storyboard storyboard = new Storyboard();
    storyboard.Children.Add(tAnimation);
    storyboard.Begin(this);
}

private void button1_Click(object sender, RoutedEventArgs e)
{
    SlideOut(userControl1);
    UserControl2 uc2 = new UserControl2();
    SlideIn(uc2);
}

Answer 1

您是否在某处设置了 UserControl 的 Name 属性？或者更准确地说，您是否为第二个 UserControl 指定了与第一个 UserControl 不同的名称？您的动画设置了目标，

Storyboard.SetTargetName(tAnimation, uc.Name);

因此名称应该不同。或者，您可以致电

Storyboard.SetTarget(tAnimation, uc);

指定目标。