C#unix時間戳記轉換

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/// <summary>/// 日期轉換成unix時間戳記/// </summary>/// <param name="dateTime"></param>/// <returns></returns>public static long DateTimeToUnixTimestamp(DateTime dateTime){    var start = new DateTime(1970, 1, 1, 0, 0, 0, dateTime.Kind);    return Convert.ToInt64((dateTime - start).TotalSeconds);}/// <summary>/// unix時間戳記轉換成日期/// </summary>/// <param name="unixTimeStamp">時間戳記（秒）</param>/// <returns></returns>public static DateTime UnixTimestampToDateTime(this DateTime target, long timestamp){    var start = new DateTime(1970, 1, 1, 0, 0, 0, target.Kind);    return start.AddSeconds(timestamp);}

C#unix時間戳記轉換