比较2个时间的差值

        #region 计算两个时间差值的函数，返回时间差的绝对值
        /// <summary>
        /// 计算两个时间差值的函数，返回时间差的绝对值/分钟
        /// </summary>
        /// <param name="DateTime1"></param>
        /// <param name="DateTime2"></param>
        /// <returns>时间差的绝对值/分钟</returns>
        private int DateDiff(DateTime DateTime1, DateTime DateTime2)
        {
            int dateDiff = 0;
            try
            {
                TimeSpan ts1 = new TimeSpan(DateTime1.Ticks);
                TimeSpan ts2 = new TimeSpan(DateTime2.Ticks);
                TimeSpan ts = ts1.Subtract(ts2).Duration();
                dateDiff = ts.Days * 24 * 60 + ts.Hours * 60 + ts.Minutes;
                //dateDiff = ts.Days.ToString() + "天"
                //                + ts.Hours.ToString() + "小时"
                //                + ts.Minutes.ToString() + "分钟"
                //                + ts.Seconds.ToString() + "秒";
            }
            catch
            {

            }
            return dateDiff;
        }
        #endregion