C#时间戳和时间互转

C#时间戳和时间互转常用方法：

        static readonly DateTime StartDateTime = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1));

        /// <summary>
        /// 时间戳转为C#格式时间
        /// </summary>
        /// <param name="timeStamp">13位整数型timestamp</param>
        /// <returns></returns>
        public static DateTime GetTime(long timeStamp)
        {
            try
            {
                TimeSpan toNow = new TimeSpan(timeStamp * 10000L);
                return StartDateTime.Add(toNow);
            }
            catch
            {
                logger.Warn("时间戳转换失败", timeStamp.ToString());
                return DateTime.Now;
            }
        }

        /// <summary>
        /// 时间戳转为C#格式时间
        /// </summary>
        /// <param name="timeStamp">13位整数型timestamp</param>
        /// <returns></returns>
        public static DateTime GetTime(string timeStamp)
        {
            if (string.IsNullOrEmpty(timeStamp)) { return DateTime.Now; }
            try
            {
                long lTime = long.Parse(timeStamp) * 10000L;
                TimeSpan toNow = new TimeSpan(lTime);
                return StartDateTime.Add(toNow);
            }
            catch
            {
                logger.Warn("时间戳转换失败", timeStamp);
                return DateTime.Now;
            }
        }


        /// <summary>
        /// DateTime时间格式转换为Unix时间戳格式
        /// </summary>
        /// <param name=”time”></param>
        /// <returns></returns>
        public static long ConvertDateTimeInt(DateTime time)
        {
            System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1));
            return (long)(time - startTime).Ticks / 10000;
        }

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