Trying to do More with my App

Question

I'm working on an App that I previously gotten help on. I want to be able to do more with it, and I need some guidance on how to proceed. Right now my app display's data based on a select query to a mysql database, to 3 different list boxes. What I would
like to do, is be able to click on the display data, and pull all requested information off of it. 
Here is the code in its current form
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using MySql.Data;
using MySql.Data.MySqlClient;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Diagnostics;
using System.Net.NetworkInformation;
using System.Threading;
namespace DES_READ
    public partial class Form1 : Form
        public Form1()
            InitializeComponent();
        private void button1_Click(object sender, EventArgs e)
            String str = @"server=192.168.13.90;uid=DES_READONLY;pwd=4Fae7SByqNk5n8Ha;database=DES;";
            MySqlConnection conn = null;
            MySqlDataReader reader = null;
            string site = textBox1.Text;
            try
                conn = new MySqlConnection(str);
                conn.Open();
                String cmdText = "SELECT O.Office_Name,O.Site,O.Office_Number,W.Site_Number,W.Lan_Router_IP,W.Public_IP_Address,W.Router_Type FROM DES.Offices as O Inner join  DES.WAN as W on O.Site = W.Site_Number
Where O.Office_Abbreviation = '" + site + "'";
                MySqlCommand cmd = new MySqlCommand(cmdText, conn);
                reader = cmd.ExecuteReader();
                if (reader.HasRows)
                    while (reader.Read())
                        string oname = reader["Office_Name"].ToString();
                        string lan = reader["Lan_Router_IP"].ToString();
                        string wan = reader["Public_IP_Address"].ToString();
                        string onum = reader["Office_Number"].ToString();
                        string snum = reader["Site_Number"].ToString();
                        string router = reader["Router_Type"].ToString();
                        listBox1.Items.Add(oname + "/" + onum + "/" + snum + "/" + router);
                        listBox2.Items.Add(snum + "/" + lan);
                        listBox3.Items.Add(snum + "/" + wan);
            catch (MySqlException err)
                MessageBox.Show("Error: " + err.ToString());
            finally
                if (reader != null)
                    reader.Close();
                if (conn != null)
                    conn.Close();
        private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
        private void Form1_Load(object sender, EventArgs e)
       // private void button2_Click(object sender, EventArgs e)
          //  for (int i = 0; i <4; ++i)
               // using (Ping p = new Ping())
                   // listBox4.Items.Add(p.Send("Lan_Router_IP").RoundtripTime.ToString() + "ms\n");
Any suggestions?

Answer 1

If you mean that by selecting Listbox item you want to get its value:
private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
string curItem = listBox1.SelectedItem.ToString();
Fouad Roumieh