private void Animation_Completed(object sender, EventArgs e)
{
AnimationTimeline timeline = (sender as AnimationClock).Timeline;
Grid uIElement = Storyboard.GetTarget(timeline) as Grid;
positionDic[uIElement.Name].CanvasLeft = Canvas.GetLeft(uIElement);
positionDic[uIElement.Name].CanvasTop = Canvas.GetTop(uIElement);
uIElement.BeginAnimation(Canvas.LeftProperty, null);
Canvas.SetLeft(uIElement, positionDic[uIElement.Name].CanvasLeft);
//Border b=null;
//foreach (var item in borderMap)
//{
// var border = item.Key;
// if (Canvas.GetLeft(uIElement) == Canvas.GetLeft(border) &&
// Canvas.GetTop(uIElement) == Canvas.GetTop(border))
// {
// b = border;
// }
//}
//if (b != null)
//{
// borderMap[b] = uIElement;
//}
}