object转成DateTime输出，不符合条件则返回defaultValue

2014-12-31 15:35:15 访问(1452) 赞(0) 踩(0)


        /// <summary>
        /// object转成 DateTime输出，不符合条件则返回defaultValue
        /// </summary>
        /// <param name="obj"></param>
        /// <param name="defaultValue"></param>
        /// <returns></returns>
        public DateTime DateTimeConvertTo(object obj, DateTime defaultValue)
        {

            if (obj is DateTime)
                return (DateTime)obj;

            if (obj == null)
                return defaultValue;

            string str = obj.ToString();

            if(str.Length == 0)
                return defaultValue;

            DateTime theResult = DateTime.MinValue;

            if (DateTime.TryParse(str, out theResult))
                return theResult;

            return defaultValue;
        }