取两个间隔时间的时间间隔函数

        private string DateDiff(DateTime DateTime1, DateTime DateTime2)
        {

            string dateDiff = null;

            try
            {

                TimeSpan ts1 = new TimeSpan(DateTime1.Ticks);

                TimeSpan ts2 = new TimeSpan(DateTime2.Ticks);

                TimeSpan ts = ts1.Subtract(ts2).Duration();

                dateDiff = ts.Days.ToString() + "天" + ts.Hours.ToString() + "小时" + ts.Minutes.ToString() + "分钟" + ts.Seconds.ToString() + "秒"+ts.Milliseconds.ToString()+"毫秒";

            }

            catch
            {
            }

            return dateDiff;

        }