#region 分钟数转换成倒计时，格式 _天_时_分 + string MinutesToCountdown(int Minutes)        /// <summary>        /// 将分钟数转换成倒计时 格式：_天_时_分        /// </summary>        /// <param name="Minutes">分钟数</param>        /// <returns></returns>        public static string MinutesToCountdown(int Minutes)        {            if (Minutes == 0) { return "0天0时0分"; }            int day = 24 * 60;            int hour = 60;            int remainder = 0;            int integer = 0;            StringBuilder sb = new StringBuilder();            integer = Minutes / day;            remainder = Minutes % day;            sb.Append(integer + "天");            integer = remainder / hour;            remainder = remainder % hour;            sb.Append(integer + "时" + remainder + "分");            return sb.ToString();        }        #endregion