WPF-Can'；t停止动画故事板，是否可控制不工作？

我有一个3D立方体，我正在使用一个共享的故事板制作动画。动画代码位于组合框的selectionChanged事件中，用于确保在下一次开始之前停止任何仍在运行的动画；但它不是那样工作的

我意识到这是一段相当混乱的代码，但我仍然不明白为什么我的故事板在我打电话时不会响应控件

有人能告诉我为什么我不能停止故事板吗？我仍然收到狡猾的

'System.Windows.Media.Animation警告：6:无法执行操作，因为指定的情节提要从未应用于此对象以进行交互控制。；动作class='Stop'；'消息

        Storyboard sb = new Storyboard();
    DoubleAnimation forward90 = new DoubleAnimation(0,90,TimeSpan.FromMilliseconds(2000));
    DoubleAnimation back90 = new DoubleAnimation(0,-90, TimeSpan.FromMilliseconds(2000));

private void cbo_SelectionChanged(object sender, SelectionChangedEventArgs e)
    {
        forward90.BeginTime = TimeSpan.Zero;
        back90.BeginTime = TimeSpan.Zero;

        NameScope.SetNameScope(this, new NameScope());

        RegisterName(this.Name, this);

        sb.Stop(this);
        sb.Remove(this);

        sb.Children.Clear();

        sb.AccelerationRatio = 0;
        sb.DecelerationRatio = 1;
        sb.RepeatBehavior = RepeatBehavior.Forever;

        int i = cbo.SelectedIndex;
        Orientation o = (Orientation)i;

        ViewModel vm = this.DataContext as ViewModel;
        if(vm !=null)vm.Orient = o;


        switch (o)
        {
            case Orientation.Front0:

                break;
            case Orientation.Front90:

                sb.Children.Add(forward90);

                Storyboard.SetTarget(forward90, cube2);

                Storyboard.SetTargetProperty(forward90, new PropertyPath(CubeControl.CubeControl.XRotationProperty));
                sb.Begin(this, true);

                break;
            case Orientation.Right0:

                sb.Children.Add(back90);

                Storyboard.SetTarget(back90, cube2);

                Storyboard.SetTargetProperty(back90, new PropertyPath(CubeControl.CubeControl.YRotationProperty));
                sb.Begin(this, true);

                break;
            case Orientation.Right90:

                back90.BeginTime = TimeSpan.FromMilliseconds(2000);

                sb.Children.Add(forward90);
                sb.Children.Add(back90);

                Storyboard.SetTarget(back90, cube2);
                Storyboard.SetTarget(forward90, cube2);

                Storyboard.SetTargetProperty(forward90, new PropertyPath(CubeControl.CubeControl.YRotationProperty));
                Storyboard.SetTargetProperty(back90, new PropertyPath(CubeControl.CubeControl.ZRotationProperty));

                sb.Begin(this, true);

                break;
            case Orientation.Top0:

                sb.Children.Add(back90);

                Storyboard.SetTarget(back90, cube2);
                Storyboard.SetTargetProperty(back90, new PropertyPath(CubeControl.CubeControl.ZRotationProperty));
                sb.Begin(this, true);

                break;
            case Orientation.Top90:

                back90.BeginTime = TimeSpan.FromMilliseconds(2000);

                sb.Children.Add(forward90);
                sb.Children.Add(back90);

                Storyboard.SetTarget(forward90, cube2);
                Storyboard.SetTarget(back90, cube2);

                Storyboard.SetTargetProperty(forward90, new PropertyPath(CubeControl.CubeControl.XRotationProperty));
                Storyboard.SetTargetProperty(back90, new PropertyPath(CubeControl.CubeControl.ZRotationProperty));

                sb.Begin(this, true);
                break;
            default:
                break;
        }
    }
}

我相信你需要通过cbo而不是begin方法

这指的是当前类（我猜是您的窗口类），而控制动画的是cbo中的更改。
恐怕没有骰子。刚试过，但还是不行。好吧！我只是补上了一些旧票，发现你确实是对的……我只需要删除名称范围和注册名称的东西。