Windows Service to run a function at specified time

Question

I wanted to start a Windows service to run a function everyday at specific time.

What method i should consider to implement this? Timer or using threads?

Answer 1

Good answer (I used your code), but one problem with this line:

_timer.Interval = _scheduleTime.Subtract(DateTime.Now).TotalSeconds * 1000;

If DateTime.now is later than scheduleTime, you will go negative and this will generate an exception when assigning to timer.Interval.

I used:

if (DateTime.now > scheduleTime)
    scheduleTime = scheduleTime.AddHours(24);

Then do the subtraction.