WPF编程，通过Double Animation动态缩放控件的一种方法。

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?1、控件缩放，可直接调用。需要将控件的名称，缩放的位数，时间等参数传进去。

        /// 

        /// 控件绕中心缩放动画
        /// 
        /// 控件名
        /// 开始大小
        /// 结束大小
        /// 过渡强度
        /// 持续时间，例如3秒： TimeSpan(0,0,3) 
        public void ScaleEasingAnimationShow(UIElement element, double Sizefrom, double Sizeto, int power, TimeSpan time)
        {
            ScaleTransform scale = new ScaleTransform();  //旋转
            element.RenderTransform = scale;
            //定义圆心位置
            element.RenderTransformOrigin = new System.Windows.Point(0.5, 0.5);
            //定义过渡动画,power为过度的强度
            EasingFunctionBase easeFunction = new PowerEase()
            {
                EasingMode = EasingMode.EaseInOut,
                Power = power
            };

            DoubleAnimation scaleAnimation = new DoubleAnimation()
            {
                From = Sizefrom,                                   //起始值
                To = Sizeto,                                     //结束值
                FillBehavior = FillBehavior.HoldEnd,
                Duration = time,                                 //动画播放时间
            };
            scale.BeginAnimation(ScaleTransform.ScaleXProperty, scaleAnimation);
            scale.BeginAnimation(ScaleTransform.ScaleYProperty, scaleAnimation);
        }

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