Question

in front of a Room i have a Panel. That Panel is displaying the occupancy time, for example 14:00 – 15:30. If someone want to use that Room for that time he has to push a CHECK_IN Button on the Panel. So the system knows there is someone in the Room. Now i want that if nobody use that Button after 20 min from 14:00, the occupancy time should be canceled.

i have already written the Query for the cancel.
But i need something similar to a Timer, which execute the Query after 20 min.
How can i do that?

Thanks in advance

Answer 1

Use a Timer and put your cancel code in the callback.

public void StartCheckin(int dueTime)
{
    var t = new Timer(new TimerCallback(CancelCheckin));
    t.Change(dueTime, Timeout.Infinite);
}

private void CancelCheckin(object state)
{
    // cancel checkin
    // dispose of timer
    ((Timer)state).Dispose();
}