是否有可能杀死BackgroundWorker的线程？

private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
    BackgroundWorker worker = sender as BackgroundWorker;

    for (int i = 1; i <= 10; i++)
    {
        if (worker.CancellationPending)
        {
            e.Cancel = true;
            break;
        }
        else
        {
            // Perform a time consuming operation and report progress.
            System.Threading.Thread.Sleep(1000);
            worker.ReportProgress(i * 10);
        }
    }
}

private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
    if (e.Cancelled)
    {
        // The thread was cancelled.
    }
    else if (e.Error != null)
    {
        // An error occurred during the thread.
    }
    else
    {
        // The thread completed successfully.
    }
}

private void button1_Click(object sender, EventArgs e)
{
    if (backgroundWorker1.IsBusy)
    {
        // Cancel the asynchronous operation.
        backgroundWorker1.CancelAsync();
    }
    else
    {
        // Start the asynchronous operation.
        backgroundWorker1.RunWorkerAsync();
    }
}