动画
using System.Windows.Media.Animation;
DoubleAnimation doubleAnimation = new DoubleAnimation();//声明对象 // doubleAnimation.By //原来的基础上操作 doubleAnimation.From //设置动画的初始值 doubleAnimation.To //设置动画的结束值 doubleAnimation.Duration = TimeSpan.FromSeconds();//设置动画的持续时间 doubleAnimation.AutoReverse = true;//是否往返执行 doubleAnimation.RepeatBehavior = new RepeatBehavior();// RepeatBehavior.Forever;//执行周期 doubleAnimation.Completed += Animation_Completed; button.BeginAnimation(Button.WidthProperty, doubleAnimation);//在当前按钮上执行该动画