CNCGUI.MainForm.CNC_DataReceived C# (CSharp) Method

        private void CNC_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
        {
            if (serialPort.BytesToRead > 0)
            {
                RxBuffer += serialPort.ReadExisting().Replace("\r", "");
                if (RxBuffer.Contains("\n"))
                {
                    string[] lines = RxBuffer.Split(new char[] { '\n' });
                    int iLines = lines.Length;
                    if (RxBuffer.EndsWith("\n"))
                    {
                        RxBuffer = string.Empty;
                    }
                    else if (iLines >= 1)
                    {
                        RxBuffer = lines[iLines - 1];
                        iLines--;
                    }
                    else
                    {
                        RxBuffer = string.Empty;
                    }
                    for (int i = 0; i < iLines; i++)
                    {
                        string line = lines[i];
                        while (line.IndexOf("  ") >= 0)
                            line = line.Replace("  ", " ");
                        line = line.Trim();
                        if (!string.IsNullOrEmpty(line))
                        {
                            if (line.StartsWith("[", StringComparison.InvariantCultureIgnoreCase)
                            ||	line.StartsWith("tinyg", StringComparison.InvariantCultureIgnoreCase))
                            {
                                while (Responses.Count >= 1000)
                                    for (int j = 0; j < 100; j++)
                                        Responses.Dequeue();
                                Responses.Enqueue(line);
                            }
                            else if (line.StartsWith("{", StringComparison.InvariantCultureIgnoreCase))
                            {
                                // JSON response string
                            }
                            else
                                GPlotAppend(line);
                            LogAppend(line);
                        }
                    }
                }
            }
        }