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(, newBorder.Width, new Duration(TimeSpan.FromSeconds(0.5)));

                        newBorder.BeginAnimation(Border.WidthProperty, widthAnimation, HandoffBehavior.Compose);

                        DoubleAnimation heightAnimation = new DoubleAnimation(, 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);

        }