1#region method IsDate   ...
2
3
4        public static bool IsDate(Object obj)
5        {
6            string strDate = obj.ToString();
7            try
8            {
9                DateTime dt = DateTime.Parse(strDate);
10                if (dt != DateTime.MinValue && dt != DateTime.MaxValue)
11                    return true;
12                return false;
13            }
14            catch
15            {
16                return false;
17            }
18        }
19        #endregion