Работа с SQL #1

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.Configuration;
using System.Data.SqlClient;

namespace DataBase {
    public partial class Form1 : Form {
        public Form1() {
            InitializeComponent();
            listBoxId.Items.Add("Id");
            listBoxMaterial.Items.Add("Материал изготовления");
            listBoxYear.Items.Add("Год строительства");
            listBoxCount.Items.Add("Количество этажей");
            string ConnectionString = @"Data Source=.\SQLEXPRESS; Initial Catalog = Houses; Integrated Security = True";
            string SQLExpression = "SELECT * FROM Houses";
            using (SqlConnection connection = new SqlConnection(ConnectionString)) {
                connection.Open();
                SqlCommand command = new SqlCommand(SQLExpression, connection);
                SqlDataReader reader = command.ExecuteReader();

                if (reader.HasRows) { //Если есть данные
                    while (reader.Read()) { //Ввод данных в боксы
                        listBoxId.Items.Add(reader.GetValue(0));
                        listBoxMaterial.Items.Add(reader.GetValue(1));
                        listBoxYear.Items.Add(reader.GetValue(2));
                        listBoxCount.Items.Add(reader.GetValue(3));
                    }
                }
            }
        }

        private void button1_Click(object sender, EventArgs e) {
            string ConnectionString = @"Data Source=.\SQLEXPRESS; Initial Catalog = Houses; Integrated Security = True";
            string SQLExpression = "SELECT * FROM Houses WHERE ([Количество этажей] > 9 AND Материал = 'Кирпич')";
            listBox1.Items.Clear();
            using (SqlConnection connection = new SqlConnection(ConnectionString)) {
                connection.Open();
                SqlCommand command = new SqlCommand(SQLExpression, connection);
                SqlDataReader reader = command.ExecuteReader();

                if (reader.HasRows) { //Если есть данные
                    while (reader.Read()) { //Ввод данных в боксы
                        listBox1.Items.Add($"Id: {reader.GetValue(0)}, {reader.GetValue(1)}, {reader.GetValue(2)}г., этажей: {reader.GetValue(3)}");
                    }
                }
            }
        }

        private void button2_Click(object sender, EventArgs e) {
            string ConnectionString = @"Data Source=.\SQLEXPRESS; Initial Catalog = Houses; Integrated Security = True";
            string SQLExpression = "SELECT * FROM Houses WHERE ([Год строительства] < 1992 AND Материал = 'Панель')";
            listBox1.Items.Clear();
            using (SqlConnection connection = new SqlConnection(ConnectionString)) {
                connection.Open();
                SqlCommand command = new SqlCommand(SQLExpression, connection);
                SqlDataReader reader = command.ExecuteReader();

                if (reader.HasRows) { //Если есть данные
                    while (reader.Read()) { //Ввод данных в боксы
                        listBox1.Items.Add($"Id: {reader.GetValue(0)}, {reader.GetValue(1)}, {reader.GetValue(2)}г., этажей: {reader.GetValue(3)}");
                    }
                }
            }
        }
    }
}