C# Jak przekonwertować DateTime do Timestamp

Question

Tak jak w pytaniu jak przekonwertować DateTime do krótkiego Timestamp?

Answer 1

public static String GetTimestamp(this DateTime value)
{
    return value.ToString("yyyyMMddHHmmssfff");
}

Źródło

Comments

        /// <summary>
        /// To UNIX TimeStamp
        /// </summary>
        /// <param name="dateTime"></param>
        /// <returns></returns>
        public static double DateTimeToUnixTimestamp(DateTime dateTime)
        {
            return (TimeZoneInfo.ConvertTimeToUtc(dateTime) - 
                new DateTime(1970, 1, 1, 0, 0, 0, 0, System.DateTimeKind.Utc)).TotalSeconds;
        }

        /// <summary>
        //  From UNIX TimeStamp to DataTime
        /// </summary>
        /// <param name="unixTimeStamp"></param>
        /// <returns></returns>
        public static DateTime? UnixTimeStampToDateTime(double unixTimeStamp)
        {
                System.DateTime dtDateTime = new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc);
                dtDateTime = dtDateTime.AddSeconds(unixTimeStamp).ToLocalTime();
                return dtDateTime;
        }


a takiego czegos uzywam ja.