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PORetrieve multiple serial port in same time using background worker
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  1. PORetrieve multiple serial port in same time using background worker
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    copied!<p>i want to ask about read data from serial port using background worker. Is it possible to retrieve data from one serial port or more using one worker? I can retrieve data when only use one serial port in worker. When i use two or more ports, i can't retrieve data anymore (without error message). Here is my code :</p> <pre><code> private void worker_DoWork(object sender, DoWorkEventArgs e) { String p = ""; String s = ""; Int32 b = 0; MethodInvoker get_selectedPort = new MethodInvoker(() =&gt; { p = comboBoxPressure.SelectedItem.ToString(); s = comboBoxStrain.SelectedItem.ToString(); b = Convert.ToInt32(comboBoxBaudrate.SelectedItem.ToString()); }); this.Invoke(get_selectedPort); SerialPort portPressure = new SerialPort(); // serial port 1 portPressure.PortName = p; portPressure.BaudRate = b; portPressure.Parity = Parity.None; portPressure.StopBits = StopBits.One; portPressure.DataBits = 8; portPressure.Handshake = Handshake.None; SerialPort portStrain = new SerialPort(); // serial port 2 portStrain.PortName = s; portStrain.BaudRate = b; portStrain.Parity = Parity.None; portStrain.StopBits = StopBits.One; portStrain.DataBits = 8; portStrain.Handshake = Handshake.None; try { portPressure.Open(); portStrain.Open(); } catch (Exception error) { MessageBox.Show("Error while trying open serial port!\r\n" + error.Message, "COM Port Error", MessageBoxButtons.OK, MessageBoxIcon.Error); worker.CancelAsync(); return; } while (!worker.CancellationPending) { System.Threading.Thread.Sleep(100); this.dataPressure = portPressure.ReadExisting(); this.dataStrain = portStrain.ReadExisting(); BeginInvoke((Action)(() =&gt; updateData())); } portPressure.Close(); portStrain.Close(); } } </code></pre>
 

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