时间戳转换类

    /// <summary>
    /// 时间相关函数
    /// </summary>
    public static class timeu
    {
        /// <summary>
        /// 将Unix时间戳转换为DateTime类型时间
        /// </summary>
        /// <param name="d">double 型数字</param>
        /// <returns>DateTime</returns>
        public static System.DateTime u_time(double d)
        {
            System.DateTime time = System.DateTime.MinValue;
            System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1));
            time = startTime.AddSeconds(d);
            return time;
        }

        /// <summary>
        /// 将c# DateTime时间格式转换为Unix时间戳格式
        /// </summary>
        /// <param name="time">时间</param>
        /// <returns>double</returns>
        public static string time_u(System.DateTime time)
        {
            try
            {
                DateTime dtStart = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1));
                DateTime dtNow = DateTime.Parse(time.ToString());
                TimeSpan toNow = dtNow.Subtract(dtStart);
                string timeStamp = toNow.Ticks.ToString();
                return timeStamp = timeStamp.Substring(0, timeStamp.Length - 7);
            }
            catch
            {
                return "999999999999";
            }
        }
    }