AsterixDisplayAnalyser.FrmAstxRecFrwdForm.btnAdd_Click C# (CSharp) Метод

        private void btnAdd_Click(object sender, EventArgs e)
        {
            bool Input_Validated = true;

            // First make sure that all boxes are filled out
            if ((!string.IsNullOrEmpty(this.textBoxConnectionName.Text)) &&
                (!string.IsNullOrEmpty(this.txtboxIPAddress.Text)) &&
                 (!string.IsNullOrEmpty(this.comboBoxNetworkInterface.Text)) &&
                (!string.IsNullOrEmpty(this.textboxPort.Text)))
            {
                IPAddress IP;
                IPAddress Multicast;
                // Validate that a valid IP address is entered
                if ((IPAddress.TryParse(this.txtboxIPAddress.Text, out Multicast) != true) || (IPAddress.TryParse(this.comboBoxNetworkInterface.Text, out IP) != true))
                {
                    MessageBox.Show("Not a valid IP address");
                    Input_Validated = false;
                }
                else // Add a check that this is a valid multicast address
                {
                    UdpClient TempSock;
                    TempSock = new UdpClient(2222);// Port does not matter
                    // Open up a new socket with the net IP address and port number
                    try
                    {
                        TempSock.JoinMulticastGroup(Multicast, 50); // 50 is TTL value
                    }
                    catch
                    {
                        MessageBox.Show("Not valid Multicast address (has to be in range 224.0.0.0 to 239.255.255.255");
                        Input_Validated = false;
                    }
                    TempSock.Close();
                }

                int PortNumber;
                if (int.TryParse(this.textboxPort.Text, out PortNumber) && (PortNumber >= 1 && PortNumber <= 65535))
                {
                }
                else
                {
                    MessageBox.Show("Invalid Port number");
                    Input_Validated = false;
                }
            }
            else
            {
                MessageBox.Show("Please fill out all data fileds");
                Input_Validated = false;
            }

            if (Input_Validated == true)
            {
                this.textBoxConnectionName.Text = this.textBoxConnectionName.Text.Replace(' ', '_');
                string ConnInfo = this.textBoxConnectionName.Text;
                this.checkedListBoxRecordingName.Items.Add(ConnInfo);

                ConnInfo = this.comboBoxNetworkInterface.Text;
                this.listBoxLocalAddr.Items.Add(ConnInfo);

                ConnInfo = this.txtboxIPAddress.Text;
                this.listBoxIPAddress.Items.Add(ConnInfo);

                ConnInfo = this.textboxPort.Text;
                this.listBoxPort.Items.Add(ConnInfo);

                UpdateForwardingCheckBoxes();
            }

            if (this.checkedListBoxRecordingName.Items.Count > 0)
            {
                this.checkedListBoxRecordingName.SelectedIndex = this.checkedListBoxRecordingName.Items.Count - 1;
            }

            if (checkedListBoxRecordingName.Items.Count == 10)
                this.btnAdd.Enabled = false;
        }