public static string ConvertDateTimeToUnix(DateTime time)
        {
            return ((time.ToUniversalTime().Ticks - 621355968000000000) / 10000000).ToString();
        }


        public static DateTime ConvertUnixToDateTime(string unix)
        {
            DateTime startUnixTime = System.TimeZoneInfo.ConvertTime(new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc), TimeZoneInfo.Local); 
            return startUnixTime.AddSeconds(double.Parse(unix));
        }