private void RemoveExpirationTimer(string label)
{
if (ExpirationTimers.ContainsKey(label))
{
var timer = ExpirationTimers[label];
timer.Elapsed -= CreateTimerNotification;
timer.Close();
ExpirationTimers.Remove(label);
}
}
private void SetExpirationTimer(Item item)
{
// Clear any existing timer.
RemoveExpirationTimer(item.Label);
// Calculate the timer duration.
var now = DateTime.Now;
var expirationInterval = item.Expiration - now;
// If it's already expired
if (item.Expiration <= now)
{
var notification = new Notification
{
AffectedItem = item,
Timestamp = DateTime.Now,
Type = NotificationType.ItemExpired
};
Notifications.Enqueue(notification);
}
//Start the expiration timer otherwise
else
{
var newTimer = new NotificationTimer(item)
{
Interval = expirationInterval.TotalMilliseconds, // Interval is in miliseconds.
AutoReset = false,
};
// Add our timer event to our timer, and add our timer to the timer collection.
newTimer.Elapsed += CreateTimerNotification;
ExpirationTimers.Add(item.Label, newTimer);
// Start the timer.
newTimer.Start();
}
}
