C# 时间戳与datatime互相装换

时间戳定义为从格林威治时间 1970年01月01日00时00分00秒（北京时间1970年01月01日08时00分00秒）起至现在的总秒数。

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace ConsoleApp1 { class Program { protected static int m_timestamp; /// <summary> /// 获取时间戳Timestamp /// </summary> /// <param name="dt"></param> /// <returns></returns> private static int GetTimeStamp(DateTime dt) { DateTime dateStart = new DateTime(1970, 1, 1, 8, 0, 0); int timeStamp = Convert.ToInt32((dt - dateStart).TotalSeconds); return timeStamp; } /// <summary> /// 时间戳Timestamp转换成日期 /// </summary> /// <param name="timeStamp"></param> /// <returns></returns> private static DateTime GetDateTime(int timeStamp) { DateTime dtStart = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1)); long lTime = ((long)timeStamp * 10000000); TimeSpan toNow = new TimeSpan(lTime); DateTime targetDt = dtStart.Add(toNow); return targetDt; } /// <summary> /// 时间戳Timestamp转换成日期 /// </summary> /// <param name="timeStamp"></param> /// <returns></returns> private static DateTime GetDateTime(string timeStamp) { DateTime dtStart = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1)); long lTime = long.Parse(timeStamp + "0000000"); TimeSpan toNow = new TimeSpan(lTime); DateTime targetDt = dtStart.Add(toNow); return dtStart.Add(toNow); } static void OnGUI() { DateTime dtNow = DateTime.Now; m_timestamp = GetTimeStamp(dtNow); Console.WriteLine ($"获取当前时间的时间戳 = {dtNow.ToString("yyyy-MM-dd hh:mm:ss")} -> {m_timestamp}"); DateTime dt = GetDateTime(m_timestamp); Console.WriteLine($"将时间戳转换成日期_1 = {m_timestamp} -> { dt.ToString("yyyy-MM-dd hh:mm:ss")}"); DateTime dt1 = GetDateTime(m_timestamp.ToString()); Console.WriteLine($"将时间戳转换成日期_2 = {m_timestamp} -> {dt1.ToString("yyyy-MM-dd hh:mm:ss")}"); } static void Main(string[] args) { OnGUI(); Console.ReadKey(); } } }