C#•2y ago

❔ How to disable background worker?

Hi, I need to do something in background when state is true and stop when state is false. I changing state by button. If I press button, state is true unit I press button again. I set WorkerSupportsCancellation on true. When I press button again, I have all the time TEST in console. Any idea?

private void Start_Click(object sender, EventArgs e)
        {
            if (started)
            {
                StartButton.Text = "Start";
                started = false;
                backgroundWorker1.CancelAsync();
                InitCheckLocalTimer().Stop();
                InitCheckLocalTimer().Dispose();
            }
            else
            {
                StartButton.Text = "Stop";
                started = true;
                InitCheckLocalTimer().Start();
            }
        }

        private void CheckLocalTimer(object sender, EventArgs e)
        {
            if (!backgroundWorker1.IsBusy)
            {
                backgroundWorker1.RunWorkerAsync();
            }
        }

        private void backgroundWorker1_DoWork(object sender, System.ComponentModel.DoWorkEventArgs e)
        {
            if (!backgroundWorker1.CancellationPending && !e.Cancel)
            {
                Console.WriteLine("TEST")
            }
            else
            {
                e.Cancel = true;
            }
        }

private void Start_Click(object sender, EventArgs e)
        {
            if (started)
            {
                StartButton.Text = "Start";
                started = false;
                backgroundWorker1.CancelAsync();
                InitCheckLocalTimer().Stop();
                InitCheckLocalTimer().Dispose();
            }
            else
            {
                StartButton.Text = "Stop";
                started = true;
                InitCheckLocalTimer().Start();
            }
        }

        private void CheckLocalTimer(object sender, EventArgs e)
        {
            if (!backgroundWorker1.IsBusy)
            {
                backgroundWorker1.RunWorkerAsync();
            }
        }

        private void backgroundWorker1_DoWork(object sender, System.ComponentModel.DoWorkEventArgs e)
        {
            if (!backgroundWorker1.CancellationPending && !e.Cancel)
            {
                Console.WriteLine("TEST")
            }
            else
            {
                e.Cancel = true;
            }
        }

2 Replies

Angius•2y ago

You don't await any of your async methods. You don't even run them in a blocking manner. Everything is fire and forget. I'm not 100% sure that's the issue, but very much seems like it might be

Accord•2y ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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❔ How to disable background worker?