C# DateTime与时间戳TimeStamp互转

ゝ一世哀愁。 2022-10-26 14:27 444阅读 0赞

### 文章目录 ###

*   *   *  \#方法
         *  \#调用

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### \#方法 ###

public class DateTime_TimeStamp
        { 
            /// <summary>
            /// DateTime转时间戳 (方法一)
            /// </summary>
            /// <param name="dt">DateTime</param>
            /// <returns>时间戳（秒）</returns>
            public static long GetUnixTimeStamp(DateTime dt)
            { 
                DateTime dtStart = TimeZoneInfo.ConvertTimeFromUtc(new DateTime(1970, 1, 1, 0, 0, 0), TimeZoneInfo.Local);
                long timeStamp = Convert.ToInt32((dt - dtStart).TotalSeconds);
                return timeStamp;
            }
            /// <summary>
            /// DateTime转时间戳 (方法二)
            /// </summary>
            /// <param name="dt">DateTime</param>
            /// <returns>时间戳（秒）</returns>
            public static long GetUnixTimeStamp1(DateTime dt)
            { 
                DateTime dtStart = new DateTime(1970, 1, 1, 8, 0, 0);
                long timeStamp = Convert.ToInt32((dt - dtStart).TotalSeconds);
                return timeStamp;
            }
            /// <summary>
            /// DateTime转时间戳 (方法三)
            /// </summary>
            /// <param name="dt">DateTime</param>
            /// <returns>时间戳（秒）</returns>
            public static long GetUnixTimeStamp2(DateTime dt)
            {  
                return (dt.ToUniversalTime().Ticks- 621355968000000000) / 10000000;
            }
            /// <summary>
            /// 时间戳转DateTime
            /// </summary>
            /// <param name="timeStamp">时间戳（秒）</param>
            /// <returns>DateTime</returns>
            public static DateTime GetDateTimeFromUnixTimeStamp(long timeStamp)
            { 
                DateTime dtStart = TimeZoneInfo.ConvertTimeFromUtc(new DateTime(1970, 1, 1,0,0,0),TimeZoneInfo.Local);
                long lTime = ((long)timeStamp * 10000000);
                TimeSpan toNow = new TimeSpan(lTime);
                DateTime targetDt = dtStart.Add(toNow);
                return targetDt;
            }
        }

### \#调用 ###

static void Main(string[] args)
            { 
                long unixTimeStamp = DateTime_TimeStamp.GetUnixTimeStamp(DateTime.Now);
    			Console.WriteLine(unixTimeStamp);	//1612252823
                DateTime dt = DateTime_TimeStamp.GetDateTimeFromUnixTimeStamp(unixTimeStamp);
                Console.WriteLine(dt.ToString());	//2021/2/2 16:00:23
            }

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