StoryBoard异常：同一个包含Storyboard的多个动画

Question

我的Windows应用商店故事板在异常后的10次中丢失了6次：

  

WinRT信息：同一个包含Storyboard的多个动画无法在单个元素上定位相同的属性。

代码：

    private void Animate(int direction)
    {
        var storyboard = new Storyboard();

        foreach (var item in _tableList)
        {
            var duration = new Duration(TimeSpan.FromMilliseconds(500));
            var ease = new CubicEase { EasingMode = EasingMode.EaseOut };
            var animation = new DoubleAnimation { EasingFunction = ease, Duration = duration };
            if (direction == 0)
            {
                animation.From = 0;
                animation.To = _perUserColumnWidth;
            }
            else
            {
                animation.From = _perUserColumnWidth;
                animation.To = 0;
            }
            animation.EnableDependentAnimation = true;
            Storyboard.SetTarget(animation, item);
            Storyboard.SetTargetProperty(animation, "Width");
            storyboard.Children.Add(animation);

        }

        storyboard.Begin();
    }

我尝试了一切，但我无法正常工作。有没有人知道这方面的解决方案？

谢谢！