MissionPlanner.Sikradio.BUT_savesettings_Click C# (CSharp) Method

        private void BUT_savesettings_Click(object sender, EventArgs e)
        {
            ICommsSerial comPort = new SerialPort();

            try
            {
                if (MainV2.comPort.BaseStream.IsOpen)
                {
                    getTelemPortWithRadio(ref comPort);
                }
                else
                {
                    comPort.PortName = MainV2.comPort.BaseStream.PortName;
                    comPort.BaudRate = MainV2.comPort.BaseStream.BaudRate;
                }

                comPort.ReadTimeout = 4000;

                comPort.Open();
            }
            catch
            {
                CustomMessageBox.Show("Invalid ComPort or in use");
                return;
            }

            lbl_status.Text = "Connecting";

            if (doConnect(comPort))
            {
                // cleanup
                doCommand(comPort, "AT&T");

                comPort.DiscardInBuffer();

                lbl_status.Text = "Doing Command";


                if (RTI.Text != "")
                {
                    // remote
                    var answer = doCommand(comPort, "RTI5", true);

                    var items = answer.Split(new[] {'\n'}, StringSplitOptions.RemoveEmptyEntries);

                    foreach (var item in items)
                    {
                        if (item.StartsWith("S"))
                        {
                            var values = item.Split(':', '=');

                            if (values.Length == 3)
                            {
                                values[1] = values[1].Replace("/", "_");

                                var controls = groupBoxRemote.Controls.Find("R" + values[1].Trim(), true);

                                if (controls.Length > 0)
                                {
                                    if (controls[0].GetType() == typeof (CheckBox))
                                    {
                                        var value = ((CheckBox) controls[0]).Checked ? "1" : "0";

                                        if (value != values[2].Trim())
                                        {
                                            var cmdanswer = doCommand(comPort,
                                                "RT" + values[0].Trim() + "=" + value + "\r");

                                            if (cmdanswer.Contains("OK"))
                                            {
                                            }
                                            else
                                            {
                                                if (values[1] == "ENCRYPTION_LEVEL")
                                                {
                                                    // set this on the local radio as well.
                                                    doCommand(comPort, "AT" + values[0].Trim() + "=" + value + "\r");
                                                    // both radios should now be using the default key
                                                }
                                                else
                                                {
                                                    CustomMessageBox.Show("Set Command error");
                                                }
                                            }
                                        }
                                    }
                                    else if (controls[0] is TextBox)
                                    {
                                    }
                                    else if (controls[0].Name.Contains("MAVLINK")) //
                                    {
                                        if (((ComboBox) controls[0]).SelectedValue.ToString() != values[2].Trim())
                                        {
                                            var cmdanswer = doCommand(comPort,
                                                "RT" + values[0].Trim() + "=" + ((ComboBox) controls[0]).SelectedValue +
                                                "\r");

                                            if (cmdanswer.Contains("OK"))
                                            {
                                            }
                                            else
                                            {
                                                CustomMessageBox.Show("Set Command error");
                                            }
                                        }
                                    }
                                    else if (controls[0] is ComboBox)
                                    {
                                        if (controls[0].Text != values[2].Trim())
                                        {
                                            var cmdanswer = doCommand(comPort,
                                                "RT" + values[0].Trim() + "=" + controls[0].Text + "\r");

                                            if (cmdanswer.Contains("OK"))
                                            {
                                            }
                                            else
                                            {
                                                CustomMessageBox.Show("Set Command error");
                                            }
                                        }
                                    }
                                }
                            }
                        }
                    }

                    Sleep(100);
                }

                comPort.DiscardInBuffer();
                {
                    //local

                    var answer = doCommand(comPort, "ATI5", true);

                    var items = answer.Split(new[] {'\n'}, StringSplitOptions.RemoveEmptyEntries);

                    foreach (var item in items)
                    {
                        if (item.StartsWith("S"))
                        {
                            var values = item.Split(':', '=');

                            if (values.Length == 3)
                            {
                                values[1] = values[1].Replace("/", "_");

                                var controls = groupBoxLocal.Controls.Find(values[1].Trim(), true);

                                if (controls.Length > 0)
                                {
                                    if (controls[0].GetType() == typeof (CheckBox))
                                    {
                                        var value = ((CheckBox) controls[0]).Checked ? "1" : "0";

                                        if (value != values[2].Trim())
                                        {
                                            var cmdanswer = doCommand(comPort,
                                                "AT" + values[0].Trim() + "=" + value + "\r");

                                            if (cmdanswer.Contains("OK"))
                                            {
                                            }
                                            else
                                            {
                                                CustomMessageBox.Show("Set Command error");
                                            }
                                        }
                                    }
                                    else if (controls[0] is TextBox)
                                    {
                                    }
                                    else if (controls[0].Name.Contains("MAVLINK")) //
                                    {
                                        if (((ComboBox) controls[0]).SelectedValue.ToString() != values[2].Trim())
                                        {
                                            var cmdanswer = doCommand(comPort,
                                                "AT" + values[0].Trim() + "=" + ((ComboBox) controls[0]).SelectedValue +
                                                "\r");

                                            if (cmdanswer.Contains("OK"))
                                            {
                                            }
                                            else
                                            {
                                                CustomMessageBox.Show("Set Command error");
                                            }
                                        }
                                    }
                                    else if (controls[0] is ComboBox)
                                    {
                                        if (controls[0].Text != values[2].Trim())
                                        {
                                            var cmdanswer = doCommand(comPort,
                                                "AT" + values[0].Trim() + "=" + controls[0].Text + "\r");

                                            if (cmdanswer.Contains("OK"))
                                            {
                                            }
                                            else
                                            {
                                                CustomMessageBox.Show("Set Command error");
                                            }
                                        }
                                    }
                                }
                            }
                        }
                    }

                    // set encryption keys at the same time, so if we are enabled we dont lose comms.
                    // we have set encryption to on for both radios, they will be using the default key atm
                    if (RENCRYPTION_LEVEL.Checked)
                    {
                        doCommand(comPort, "RT&E=" + txt_Raeskey.Text.PadRight(32, '0'), true);
                    }
                    if (ENCRYPTION_LEVEL.Checked)
                    {
                        doCommand(comPort, "AT&E=" + txt_aeskey.Text.PadRight(32, '0'), true);
                    }


                    if (RTI.Text != "")
                    {
                        // write it
                        doCommand(comPort, "RT&W");

                        // return to normal mode
                        doCommand(comPort, "RTZ");
                    }

                    // write it
                    doCommand(comPort, "AT&W");


                    // return to normal mode
                    doCommand(comPort, "ATZ");
                }

                lbl_status.Text = "Done";
            }
            else
            {
                // return to normal mode
                doCommand(comPort, "ATZ");

                lbl_status.Text = "Fail";
                CustomMessageBox.Show("Failed to enter command mode");
            }


            comPort.Close();
        }