Question

can someone help me to stop timer until the method “Utils.ItsTimeToRemind(remind.FormTag);” is finished? Then start again…

public static Timer TIMER; 

public TimerClass()
{
    TimerCallback callback = new TimerCallback(Tick);
    TIMER = new Timer(callback, null, 0, 1000);
}

static public void Tick(Object stateInfo)
{
    List<RemindObject> remList = Utils.Reminds;
    foreach (RemindObject remind in remList)
    {
        if (remind.reminTime.CompareTo(DateTime.Now) < 0)
        {
            Utils.ItsTimeToRemind(remind.FormTag);
        }
    }
}

Answer 1

There is a small problem with Neil Knight’s solution – it’s better to start/stop your timer in a try-catch block. If an exception is thrown you can ensure that the timer will be restarted:

using System.Timers.Timer;

private static Timer timer; 

static public void Tick(Object stateInfo)
{
    try
    {
        timer.Stop();


        List<RemindObject> remList = Utils.Reminds;
        foreach (RemindObject remind in remList)
        {
            if (remind.reminTime.CompareTo(DateTime.Now) < 0)
            {

                Utils.ItsTimeToRemind(remind.FormTag);
            }
        }
    }
    catch(Exception ex)
    {
        // log exception, etc
    }
    finally
    {
        timer.Start();
    }
}