TimeSpan时间间隔详解

        public string GetShiXian(string fadanshijian)
        {
            string result,chulishijian;

            DateTime fdTime, dqTime;
            TimeSpan ts;
            int cha = 0;

            // 获取配置文件中处理时限
            chulishijian = "24"; // System.Configuration.ConfigurationManager.AppSettings["YibanAnJian"]; //小时
            // 获取发单时间
            fdTime = Convert.ToDateTime(fadanshijian);
            // 设置完成时限
            fdTime = fdTime.AddHours(Convert.ToInt32(chulishijian));
            // 获取当前时间
            dqTime = DateTime.Now;

            ts = fdTime - dqTime;
            cha = dqTime.CompareTo(fdTime);
            if (cha < 0)
            {
                result = "距离完成时限还有" + ts.Days + "天" + ts.Hours + "小时";
            }
            else
            {
                result = "案件已超时" + Math.Abs(ts.Days) + "天" + Math.Abs(ts.Hours) + "小时";
            }



            return result;
        }