how to insert wifi scan data into sql table

[Olu_01]

Urgent assist required. Can someone help pls, i have scanned wifi data in C# that i have split into required form MAC,SSID and RSSi . i want when i push a button the results are inserted into an sql table that i already created. and if i push the buton again it stops inserting. I have tried several methods and could not get it to work, Will appreciate assist

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO.Ports;

namespace WICED_SERIALPORT_TEST
{
public partial class Form1 : Form

{
    
    public Form1()
    {
        InitializeComponent();
    }

    private void button1\_Click(object sender, EventArgs e)
    {
        string\[\] ports = SerialPort.GetPortNames();
        foreach (string port in ports)
        {
            comboBox1.Items.Add(port);
        }

    }
    //
    string t;
    private void button2\_Click(object sender, EventArgs e)
    {

        t = comboBox1.Text.ToString();
        sErial(t);
        
    }
    //
    SerialPort sp;
    void sErial(string Port\_name)
    {
        sp = new SerialPort(Port\_name, 115200, Parity.None, 8, StopBits.One);
        sp.DataReceived += new SerialDataReceivedEventHandler(DataReceivedHandler);
        sp.Open();
    }
    // 
    private void DataReceivedHandler(object sender, SerialDataReceivedEventArgs e)
    {
        SerialPort sp = (SerialPort)sender;
        string msg = string.Empty;
        bool canCont = false;

        while (!canCont)
        {
            msg += sp.ReadLine();
            if (msg.Contains("Scan complete "))
            {
                canCont = true;
            }
        }

        //string w = sp.ReadLine();
        //string w = sp.ReadExisting();

        // string msg = sp.ReadExisting();

        string\[\] msgArr = msg.Split('\\r');

        Invoke(new Action(() => listBox1.Items.Clear()));


        List<string\[\]> list = new List<string\[\]>();
        List<Networks> Scan = new List<Networks>();

        for (int i = 0; i < msgArr.Length; i++)
        {
            list.Add(msgArr\[i\].Split(

[Wendelius]

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