Question

I created a class:

public class AbortableBackgroundWorker : BackgroundWorker
{



  private Thread workerThread;

    protected override void OnDoWork(DoWorkEventArgs e)
    {
        workerThread = Thread.CurrentThread;
        try
        {
            base.OnDoWork(e);
        }
        catch (ThreadAbortException)
        {
            e.Cancel = true; //We must set Cancel property to true!
            Thread.ResetAbort(); //Prevents ThreadAbortException propagation
        }
    }


    public void Abort()
    {
        if (workerThread != null)
        {
            workerThread.Abort();
            workerThread = null;
        }
    }
}

Here is how i use it:

  backgroundWorker1 = new AbortableBackgroundWorker();
//...
backgroundWorker1.RunWorkerAsync();

if (backgroundWorker1.IsBusy == true)
{
    backgroundWorker1.Abort();//This method is unavailable :(
    backgroundWorker1.Dispose();
}

Another small question..will this code cancel a backgroundworker?

Answer 1

The method is unavailable because the static type of backgroundWorker1 is BackgroundWorker. You need

AbortableBackgroundWorker backgroundWorker1 = new AbortableBackgroundWorker();

Otherwise you’ll have to downcast it(be it with (cast) or as) to AbortableBackgroundWorker