DatePicker(日期选择自定义服务器控件)的实现[2]

                       return datetime.now.month;

                   else

                       return (int)viewstate["month"];

              }

              set { viewstate["month"] = value; }

         }

         public int day {

              get {

                   if (viewstate["day"] == null)

                       return datetime.now.day;