wpf cancel backgroundworker on application exits
- by toni
Hi!
In my application I have a main windows and into it, in a frame I load a page. This page do a long time task when the user press a button. My problem is that when long task is being doing and the user presses the close button of the main window, the application seems to not finish because I am debugging it in VS2008 and I can see the stop button highlighted. If I want to finish I have to press stop button, the application doesn't stop the debugging automatically on application exit. I thought .NET stops automatically backgroundworkers on application exits but I am not sure after seeing this behaviour. I have tried to force and cancel background worker in unloaded event page with something like this:
private void Page_Unloaded(object sender, RoutedEventArgs e)
{
// Is the Background Worker do some work?
if (My_BgWorker != null && My_BgWorker.IsBusy)
{
//If it supports cancellation, Cancel It
if (My_BgWorker.WorkerSupportsCancellation)
{
// Tell the Background Worker to stop working.
My_BgWorker.CancelAsync();
}
}
}
but with no success. After doing CancelAsync(), a few minutes after, I can see the backgroundworker finishes and raise RunWorkerCompleted and I can see the task is completed checking e.Cancelled argument in the event but after this event is exectued the application continues without exiting and I have no idea what is doing....
I set WorkerSupportsCancellation to true to support cancel at the begining.
I would apreciate all answers. Thanks.
