WPF 动画显示控件

 public static void ShowAnimation(object control)
        {
            Type type = control.GetType();
            switch (type.Name)
            {
                case "Border":
                    {
                        Border newBorder = (Border)control;
                        #region 高、宽变化动画

                        DoubleAnimation widthAnimation = new DoubleAnimation(0, newBorder.Width, new Duration(TimeSpan.FromSeconds(0.5)));
                        newBorder.BeginAnimation(Border.WidthProperty, widthAnimation, HandoffBehavior.Compose);

                        DoubleAnimation heightAnimation = new DoubleAnimation(0, newBorder.Height, new Duration(TimeSpan.FromSeconds(0.5)));
                        newBorder.BeginAnimation(Border.HeightProperty, heightAnimation, HandoffBehavior.Compose);
                        #endregion
                    }
                    break;

                default:
                    break;
            }
        }

private void button_Click(object sender, RoutedEventArgs e)
        {
            bord1.Visibility = Visibility.Visible;
            ShowAnimation(bord1);
        }