How do I create scheduler service having multiple timer in C#

TargetComputername1,Date1,Time1,Password1
TargetComputername2,Date2,Time2,Password2
TargetComputername3,Date3,Time3,Password3
.
.
TargetComputernameN,DateN,TimeN,PasswordN

using (var parser = new TextFieldParser(AppPath + "\\iPXEScheduler.csv"))
{
	parser.TextFieldType = FieldType.Delimited;
	parser.SetDelimiters(",");

	string[] line;
	int count = 1;
	while (!parser.EndOfData)
	{
		count++;
		line = parser.ReadFields();
		if (bStringContains(line[0], sDeviceNameGet("StoreID"), StringComparison.OrdinalIgnoreCase))
		{
			if (validate(line, count))
			{
				SetupTimer();
			}
		}
	}
}

//validate function
private bool validate(string[] line, int count)
{
	/*for reference
	line[0]=device name
	line[1]=Date
	line[2]=time
	line[3]=countdown
	line[4]=Password
	*/

	//Local variables
	bool bISValidate = true;
	Double dLOCCountDown = 1.0;
	string sLOCTime;
	DateTime dtScheduledDateTime = DateTime.Now.AddYears(1000); //Any imaginary date just to sufice try catch;
	string[] DateTimeformat = { "MM/dd/yyyy HH:mm", "M/d/yyyy H:mm", "MM/d/yyyy H:mm", "M/dd/yyyy H:mm", "M/d/yyyy HH:mm", "MM/d/yyyy HH:mm", "M/dd/yyyy HH:mm" };

	if (line.Length != 5)
	{
		WriteLog("There are more or less then 5 parameter specified in csv at line : " + count);
		bISValidate = false;
		goto Error;
	}
	if (line[0]=="" && line[1]=="" && line[2]=="" && line[3]==""&&line[4]=="")
	{
		WriteLog("One of the parameter found blank at : " + count);
		bISValidate = false;
		goto Error;
	}
	if (line[0].Length != 12)
	{
		WriteLog("Please check the device name at line : " + count);
		bISValidate = false;
		goto Error;
	}

	//In case POS close is specified instead of Time.
	if (bStringContains(line[2], "CLOSE", StringComparison.OrdinalIgnoreCase))
	{
		sLOCTime = "00:00";
	}
	else
	{
		sLOCTime = line[2];
	}

	//Validating date and time
	try
	{
		dtScheduledDateTime = DateTime.ParseExact(line[1] + " " + line[2], DateTimeformat, null, System.Globalization.DateTimeStyles.None);
	}
	catch(Exception ex)
	{
		WriteLog("Error parsing date and time : " + ex.Message);
		WriteLog("Correct date format is : MM/dd/yyyy and time is : HH:mm (24 hours)");
		bISValidate = false;
		goto Error;
	}

	//Parse the count down value
	try
	{
		dLOCCountDown = Double.Parse(line[3]);
		if (dLOCCountDown < 1.0 && dLOCCountDown > 99.0)
		{
			WriteLog("Countdown can not be less then 1 and greater then 99 " + dLOCCountDown);
			bISValidate = false;
			goto Error;
		}

	}
	catch(Exception ex)
	{
		WriteLog("Error parsing CoutDown : " + ex.Message);
	}

	//Validate password only for digits
	if (!IsDigitsOnly(line[4]))
	{
		WriteLog("Password seems to contain character other then digit which is not allowed at line : " + count);
		bISValidate = false;
		goto Error;
	}

	Error:
	if (bISValidate == false)
	{
		return false;
	}
	else
	{
		DateTime dtGLOScheduleDateTime = dtScheduledDateTime;
		Double dGLOCountDown = dLOCCountDown;
		string sGLOPassword = DecryptPassword(line[4]); //line[4] contains password;
		string sGLODevice = line[0]; //contains Device name;
		return true;
	}
}


//timer function:

private void SetupTimer()
{
	Timer Countdown = new Timer();
	Countdown.AutoReset = false;
	WriteLog(dtGLOScheduleDateTime.ToString());
	Countdown.Interval = (dtGLOScheduleDateTime.Subtract(DateTime.Now).TotalSeconds * 1000) - (dGLOCountDown * 24 * 60 * 60 * 1000);
	Countdown.Elapsed += (sender, e) => Countdown_Elapsed(sender, e, sGLOPassword);
	Countdown.Start();

}

private void Countdown_Elapsed(object sender, ElapsedEventArgs e, string sGLOPassword)
{
	WriteLog(DateTime.Now.ToString() + " : " + sGLOPassword);

}