C# 时间戳转换实例

        /// <summary>
        /// 将时间转时间戳换
        /// 有效范围1970-01-01 08:00:00~~2100-01-01 08:00:00 （范围可改）
        /// </summary>
        /// <param name="time">要转换的时间</param>
        /// <param name="length">输出转换长度</param> 
        /// <param name="timestamp">输出时间戳</param>
        /// <returns></returns>
        public bool ToTimeStamp(DateTime time,int length, out long timestamp)
        {
            timestamp = 0;
            if (length == 11)
            {
                timestamp = Convert.ToInt64((time - (TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1)))).TotalSeconds);
                return (timestamp > 0 && timestamp <= 4102444800);//范围设定
            }
            else if (length == 13)
            {
                timestamp = Convert.ToInt64((time - (TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1)))).TotalMilliseconds);
                return (timestamp > 0 && timestamp <= 4102444800000);//范围设定
            }
            else
                return false;
        }
        /// <summary>
        /// 将时间戳换为时间转
        /// 有效范围1970-01-01 08:00:00~~2100-01-01 08:00:00 （范围可改）
        /// </summary>
        /// <param name="timestamp">要转换的时间戳</param>
        /// <param name="length">要转换长度</param>
        /// <param name="time">输出时间</param>
        /// <returns></returns>
        public bool ToDateTime(long timestamp, int length, out DateTime time)
        {
            time = DateTime.Now;
            DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1));//当地时区
            if (length == 11)
            {
                time = startTime.AddSeconds(timestamp);
                return (timestamp > 0 && timestamp <= 4102444800);//范围设定
            }
            else if (length == 13)
            {
                time = startTime.AddMilliseconds(timestamp);
                return (timestamp > 0 && timestamp <= 4102444800000);//范围设定
            }
            else return false;
        }

            DateTime dt=DateTime.Now;
            new MyThread().ToTimeStamp(dt, 11, out long timestamp1);
            new MyThread().ToTimeStamp(dt, 13, out long timestamp2);
            new MyThread().ToDateTime(timestamp1, 11, out DateTime time1);
            new MyThread().ToDateTime(timestamp2, 13, out DateTime time2);
            Console.WriteLine("转换的时间"+dt);
            Console.WriteLine($"11位的时间戳:{timestamp1}");
            Console.WriteLine($"13位的时间戳:{timestamp2}");
            Console.WriteLine($"11位的时间戳转时间:{time1}");
            Console.WriteLine($"13位的时间戳转时间:{time2}");