C# 時間戳轉換爲時間方法

        /// <summary>
        /// 時間戳轉爲C#格式時間
        /// </summary>
        /// <param name="timeStamp"></param>
        /// <returns></returns>
        public static DateTime GetTime(string timeStamp)
        {
            if (timeStamp.Length > 10)
            {
                timeStamp = timeStamp.Substring(0, 10);
            }
            DateTime dateTimeStart = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1));
            long lTime = long.Parse(timeStamp + "0000000");
            TimeSpan toNow = new TimeSpan(lTime);
            return dateTimeStart.Add(toNow);
        }