Maximum Timer interval

Question

The maximum interval of timer is 2,147,483,647. it\'s about 25 days. But in my requirements I need that the timer will wait 30 days. How can I resolve it? Please help.

Answer 1

To do that with a timer you also need an application and a PC that runs without interruption for 30+ days. Not impossible but a big risk.

It sounds like you want scheduled execution of something. Calculate the target date/time and persist that it an XML or .config file. When the application restarts it can re-calculate the TimeSpan for firing the event.

Answer 2

Use a System.Threading.Timer for this. There are constructors that take a long, a uint or a TimeSpan instead of an int for the dueTime. Any of these will let you set a period of 30 days.

Update: this is the easiest way to do it:

System.Threading.Timer _timer;
public void Start30DayTimer()
{
    TimeSpan span = new TimeSpan(30, 0, 0, 0);
    TimeSpan disablePeriodic = new TimeSpan(0, 0, 0, 0, -1);
    _timer = new System.Threading.Timer(timer_TimerCallback, null, 
        span, disablePeriodic);
}

public void timer_TimerCallback(object state)
{
    // do whatever needs to be done after 30 days
    _timer.Dispose();
}

Answer 3

int days = 30;

Create a timer for a period one day.

Decrement days each time the timer fires.