后台控制改变Silverlight 中的Ellipse控件的Fill填充图片

        /// <summary>
        /// 开启状态下的图片
        /// </summary>
        /// <param name="e"></param>
        public void OpenStatusPicture(Ellipse e)
        {
            var brush = new ImageBrush(); //定义图片画刷
            var converter = new ImageSourceConverter();
            brush.ImageSource = (ImageSource)converter.ConvertFromString("image/beng_2.png");
            e.Fill = brush;//填充
        }