Form / listbox and one label

[brown1z1975]

I am trying to write code that pulls the names of the states into a list box, which I have done but then it needs to pull the information from the county table and show in my popLabel State, Population, Largest County, Smallest County.... I really need help, this is my code thus far:

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

namespace Exam2
{
    public partial class Form1 : Form
    {
        string connectionString;
        SqlConnection connection;
        SqlDataAdapter adapter;

        public Form1()
        {
            InitializeComponent();
            InitialDatabaseObjects();
            LoadStateListBox();
            CloseDatabaseoObjects();
        }
        public void InitialDatabaseObjects()
        {
            connectionString = "Data Source=(LocalDB)\\MSSQLLocalDB;AttachDbFilename= C:\\Users\\Lesley Cadden\\OneDrive\\ANDERSON UNIVERSITY\\Spring 2018\\Exam2\\census.mdf; Integrated Security = True; Connect Timeout = 30";
            connection = new SqlConnection(connectionString);
            connection.Open();
        }
        public void CloseDatabaseoObjects()
        {
            connection.Close();
        }
        public void LoadStateListBox()
        {
            string query = "SELECT * FROM state";
            DataTable stateTable;

            stateTable = new DataTable();
            adapter = new SqlDataAdapter(query, connection);
            adapter.Fill(stateTable);

            stateListBox.Items.Clear();
            foreach (DataRow row in stateTable.Rows)
        {
            stateListBox.Items.Add(row[1]);
        }
          
           
        }
    }
}