Как сделать вывод в datagridview из sql express?

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 testik
{
    public partial class Form2 : Form
    {
        private SqlConnection sqlConnection = null;
        private SqlDataAdapter adapter = null;
 
        private DataTable table = null;
 
        public Form2()
        {
            InitializeComponent();
        }
 
        private void Form2_Load(object sender, EventArgs e)
        {
            sqlConnection = new SqlConnection("Data Source = Mycomp\\SQLEXPRESS;Initial Catalog = Testik; Integrated Security = True");
 
            sqlConnection.Open();
 
            adapter = new SqlDataAdapter("SELECT * FROM Avto", sqlConnection);
 
            table = new DataTable();
        }
 
        private void Button1_Click(object sender, EventArgs e)
        {
            table.Clear();
            adapter.Fill(table);
            dataGridView1.DataSource = table;
        }
    }
}

{
    public Form1()
    {
        InitializeComponent();
 
        LoadData();
    }
 
    private void LoadData()
    {
        string connectString = "Data Source=.\\SQLEXPRESS;Initial Catalog=LSTU_Schedule_autumn20172018;" +
            "Integrated Security=true;";
 
        SqlConnection myConnection = new SqlConnection(connectString);
 
        myConnection.Open();
 
        string query = "SELECT * FROM Faculty ORDER BY fac_id";
 
        SqlCommand command = new SqlCommand(query, myConnection);
 
        SqlDataReader reader = command.ExecuteReader();
 
        List<string[]> data = new List<string[]>();
 
        while (reader.Read())
        {
            data.Add(new string[3]);
 
            data[data.Count - 1][0] = reader[0].ToString();
            data[data.Count - 1][1] = reader[1].ToString();
            data[data.Count - 1][2] = reader[2].ToString();
        }
 
        reader.Close();
 
        myConnection.Close();
 
        foreach (string[] s in data)
            dataGridView1.Rows.Add(s);
    }
}