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POReport progress of background worker between classes and threads
 

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    <p>Below is the code for a class I have that handles connection and interaction with a serial device. I call the connect function from another class as is shown immediately below this as well. My question is: what is the best way to update my progress bar, which is located on a different class than the one where I initialize the background worker? I am having issues, because I am trying to update something that is across threads and across classes. Passing the form class into my connect function as a parameter works, but then I have to pass it through the background worker and the report progress function; it is just messy and unclean. Is there a better way to do this? Any help is appreciated and thanks in advance.</p> <p>Class where I call the connection function from(also my WPF class):</p> <pre><code>public partial class agentRadio : Window { private void connectButton_Click(object sender, RoutedEventArgs e) //Connect button clicked { agentradioread.connect((string)portsOpen.SelectedValue, this); } } </code></pre> <p>Class that handles my serial interaction:</p> <pre><code>class agentRadioRead //Handles connection and reading of device values { /*Local variable declarations*/ SerialPort agentSerial; BackgroundWorker connectWorker; string resultMessage = "Error: The connect function has completed without setting this status message properly."; byte[] data = new byte[2246]; /*Public methods*/ public void connect(string selectedPort, agentRadio agentR) //Connects device, reads values, stores values, displays status message { agentSerial = new SerialPort(selectedPort, 9600, Parity.None, 8, StopBits.One); connectWorker = new BackgroundWorker(); //connectWorker.WorkerReportsProgress = true; connectWorker.DoWork += new DoWorkEventHandler(initialRead); //connectWorker.ProgressChanged += new ProgressChangedEventHandler(reportProgress); connectWorker.RunWorkerAsync(agentR); } /*Private methods*/ void initialRead(object sender, DoWorkEventArgs e) { agentSerial.Open(); agentSerial.BaseStream.Flush(); byte[] result = new byte[7]; byte questionMark = 63; agentSerial.BaseStream.WriteByte(questionMark); System.Threading.Thread.Sleep(100); agentSerial.BaseStream.Read(result, 0, 7); string system = ""; foreach (byte letter in result) { system += Convert.ToChar(letter).ToString(); } bool read = readPort(); if (read) { int i = 1; foreach (byte value in data) { storeData(i, value); i++; } } MessageBox.Show(resultMessage, "Status Message", MessageBoxButton.OK, MessageBoxImage.Information); } bool readPort() { bool succesfulRead = false; agentSerial.BaseStream.Flush(); agentSerial.BaseStream.Write(Global.READ_VALUES, 0, Global.READ_VALUES.Length); //begin read values byte key = (byte)agentSerial.BaseStream.ReadByte(); if (Global.START_COMMAND == key) //Verify continue key { for (int i = 0; i &lt; 2246; i++) //Loop through values { try { data[i] = (byte)agentSerial.BaseStream.ReadByte(); agentSerial.BaseStream.Write(Global.GO_AHEAD, 0, Global.GO_AHEAD.Length); agentSerial.BaseStream.Flush(); } catch { resultMessage = "An error occured, while reading the device settings." + i; break; } } if (data[2245] != Global.FINISH_COMMAND) { resultMessage = "An error occured, while reading the device settings." + 2245; } else { succesfulRead = true; } } else //Key failed and displays error { resultMessage = "An error occured, are you sure you are trying to connect to an Agent (Radio Version)? If so make sure you have followed the steps listed above."; } return succesfulRead; } void storeData(int iteration, byte value) { if (iteration &gt; 0 &amp;&amp; iteration &lt; 385) //read schedule { double pos = (iteration - 1) / 48; int i = (int)Math.Floor(pos); int j = (iteration - 1) - (i * 48); Create.schedule[i, j] = value; } if (iteration &gt; 384 &amp;&amp; iteration &lt; 1285) //read alarm history { double pos = (iteration - 385) / 9; int i = (int)Math.Floor(pos); int j = (iteration - 385) - (i * 9); Create.alarms[i, j] = value; } if (iteration &gt; 1284 &amp;&amp; iteration &lt; 1345) //read error log { double pos = (iteration - 1285) / 6; int i = (int)Math.Floor(pos); int j = (iteration - 1285) - (i * 6); Create.errors[i, j] = value; } if (iteration &gt; 1344 &amp;&amp; iteration &lt; 1945) //read voltage history { double pos = (iteration - 1345) / 6; int i = (int)Math.Floor(pos); int j = (iteration - 1345) - (i * 6); Create.voltage[i, j] = value; } if (iteration &gt; 1944 &amp;&amp; iteration &lt; 1973) //read holidays { Create.holidays[iteration - 1945] = value; } if (iteration &gt; 1972 &amp;&amp; iteration &lt; 2168) //read message sequences { double pos = (iteration - 1973) / 15; int i = (int)Math.Floor(pos); int j = (iteration - 1973) - (i * 15); Create.messages[i, j] = value; } if (iteration &gt; 2167 &amp;&amp; iteration &lt; 2196) //read message info { Create.recordings[iteration - 2168] = value; } if (iteration &gt; 2195 &amp;&amp; iteration &lt; 2246) //read sysval { Create.sysval[iteration - 2196] = value; } if (iteration == 2246 &amp;&amp; value == Global.FINISH_COMMAND) { if (Global.restoring) { resultMessage = "Your device has been succesfully restored."; } else { resultMessage = "Your device has been succesfully connected, and all settings have been loaded from the device."; } } else { resultMessage = "An error occured, while reading the device settings." + "Storing"; } } void reportProgress(object sender, ProgressChangedEventArgs e) { } } </code></pre>
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