public  class Bird    {        int xdata;        /// <summary>        /// 属性的简洁写法，等同于下面的xData方式        /// </summary>        public int Data { set; get; }        /// <summary>        /// 属性的正常写法        /// </summary>        public int xData        {            set { xdata =http://www.mamicode.com/ value; }            get { return xdata; }        }        /// <summary>        /// 属性的递归        /// </summary>        public int Type        {            set            {                if (value < 15)                {                    Type = value + 1; //这里会递归调用set                    Console.WriteLine("value=http://www.mamicode.com/{0}", value);                }            }                    }    }    class Program    {        static void Main(string[] args)        {            Bird bd = new Bird();            bd.Data = 10;            Console.WriteLine("data = http://www.mamicode.com/{0}", bd.Data);            bd.Type = 10;        }    }