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POC# background worker- how to trigger it for a repetitive task
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copied!<p>I am receiving data from a serial port, placing each line into a queue and then de-queuing the lines, formatting them slightly (removing some leading characters, trimming etc), and then displaying the formatted lines in a listbox.</p> <p>I am using a Timer to fire the Dequeuing method every 200ms. Everything is working but it seems to be a bit sluggish/slow.</p> <p>I am considering using a BackgroundWorker to handle the de-queuing and formatting but im getting stuck. </p> <p>I tried to start the backgroundworker in FormLoad, but quickly realized it would run through the code only once. I tried a label and goto inside the backgroundworker code to create a loop (i know, not good) but that got me high CPU usage and didnt even work.</p> <p>I also tried using " backgroundWorker1.RunWorkerAsync(); " in my serial received event to run it every time new data comes in but that throws the 'Background worker currently busy" exception</p> <p>So, I need the background worker to continuously process the queue (dequeue).</p> <p>Code: heres my data received event, and below that my dequeuing code thats sitting in the backgroundworker. Any help much appreciated.</p> <pre><code>// Serial Data Received private void serialPort1_DataReceived( object sender, System.IO.Ports.SerialDataReceivedEventArgs e) { RxString = serialPort1.ReadTo("\u0003"); q.Enqueue(RxString); } </code></pre> <p>Next Code is the dequeue code:</p> <pre><code>// Dequeue items, format, then display in listbox private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e) { if (q.Count == 0) { // do nothing if q is empty } else do { output = (q.Dequeue().ToString()); output = output.TrimStart(new char[] { (char)02 }); output = output.TrimEnd(new char[] { (char)03 }); if (output.StartsWith("C")) { ClearAll(); } else if (output.StartsWith("W98")) { txtTax.Text = (output.Remove(0, 5)); } else if (output.StartsWith("W99")) { txtTotal.Text = (output.Remove(0, 24)); } else { listOrderItems.Items.Add(output.Remove(0, 5)); listOrderItems.SelectedIndex = listOrderItems.Items.Count - 1; } } while (q.Count > 0); } </code></pre>

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