What's keeping this timer in scope? The anonymous method?
- by Andy
Ok,
So I have a method which fires when someone clicks on our Icon in a silverlight application, seen below:
private void Logo_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
e.Handled = true;
ShowInfo(true);
DispatcherTimer autoCloseTimer = new DispatcherTimer();
autoCloseTimer.Interval = new TimeSpan(0, 0, 10);
autoCloseTimer.Tick +=new EventHandler((timerSender,args) =>
{
autoCloseTimer.Stop();
ShowInfo(false);
});
autoCloseTimer.Start();
}
Whats meant to happen is that the method ShowInfo() opens up a box with the company info in and the dispatch timer auto closes it after said timespan. And this all works...
But what I'm not sure about is because the dispatch timer is a local var, after the Logo_MouseLeftButtonUp method finishes, what is there to keep the dispatch timer referenced and not availible for GC collection before the anonymous method is fired?
Is it the reference to the ShowInfo() method in the anonymous method?
Just feels like some thing I should understand deeper as I can imagine with using events etc it can be very easy to create a leak with something like this.
Hope this all makes sense!
Andy.
