Windows service with two timers but an event is never execute.

[thereisnopatchforhumancruelty]

Hi, I have a Windows Service with two timers. In the OnStart method:

checkTimer1.Elapsed += new ElapsedEventHandler(OnCheckTimer1Time);
checkTimer1.Interval = 300000; //5 min
checkTimer1.Enabled = true;

checkTimer2.Elapsed += new ElapsedEventHandler(OnCheckTimer2Time);
checkTimer2.Interval = 600000; //10 min
checkTimer2.Enabled = true;



OnCheckTimer1Time:

private void OnCheckTimer1Time(object source, ElapsedEventArgs e)
{
writeLog("something timer 1");
}



OnCheckTimer2Time:

private void OnCheckTimer2Time(object source, ElapsedEventArgs e)
{
writeLog("something timer 2");
}

and writeLog:

try
{
using (StreamWriter sw = new StreamWriter(@"C:\Users\myuser\Desktop\logFile.txt", true))
sw.WriteLine(line);
}
catch (Exception)
{
return;
}



But the "something timer 2" is never printed on file. I think that this is because 600000 is a multiple of 300000 and when it's the time in which the two event must be called, only the first event is executed.

Can someone tell me why I have this behavior and how I can solve that, protecting my file from the cuncurrent access?

The two timer are of System.Timers components

PS: if I choose 30000 ms e 600121 ms in the timer Interval, in my file I have both the something timer 1 and something timer 2 strings.

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