Код регистрации и авторизации

using MySql.Data.MySqlClient;
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;

namespace sql_test
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void label5_Click(object sender, EventArgs e)
        {
            reg.Location = new Point(-1, -2);
        }

        private void button3_Click(object sender, EventArgs e)
        {
            reg.Location = new Point(249, 241);
        }

        private void label5_MouseMove(object sender, MouseEventArgs e)
        {
            label5.ForeColor = Color.Black;
        }

        private void label5_MouseLeave(object sender, EventArgs e)
        {
            label5.ForeColor = Color.Blue;
        }

        private void auth_Click(object sender, EventArgs e)
        {
            String loginUser = login.Text;
            String passUser = password.Text;

            DB db = new DB();

            DataTable table = new DataTable();

            MySqlDataAdapter adapter = new MySqlDataAdapter();

            MySqlCommand command = new MySqlCommand("SELECT name, surname FROM `users` WHERE `login` = @uL AND `pass` = @uP", db.getConnection()); //Сделали запрос к базе данных
            command.Parameters.Add("@uL", MySqlDbType.VarChar).Value = loginUser;
            command.Parameters.Add("@uP", MySqlDbType.VarChar).Value = passUser;

            adapter.SelectCommand = command;
            adapter.Fill(table);

            if (table.Rows.Count > 0)
            {
                MessageBox.Show("Аккаунт надйен но разраб пока не реализовал профиль:(");
            }
            else
                MessageBox.Show("Ошибка профиль не найден :(");
        }

        private void button2_Click(object sender, EventArgs e)
        {
            String nameUser = name.Text;
            String surnameUser = surname.Text;
            String dateUser = date.Text;
            String loginUser = loginreg.Text;
            String passUser = passreg.Text;

            DB db = new DB();

            MySqlCommand command = new MySqlCommand("INSERT INTO Users (name, surname, date, login, pass) VALUES (@n, @s, @d, @l, @p)", db.getConnection());
            command.Parameters.Add("@n", MySqlDbType.VarChar).Value = nameUser;
            command.Parameters.Add("@s", MySqlDbType.VarChar).Value = surnameUser;
            command.Parameters.Add("@d", MySqlDbType.VarChar).Value = dateUser;
            command.Parameters.Add("@l", MySqlDbType.VarChar).Value = loginUser;
            command.Parameters.Add("@p", MySqlDbType.VarChar).Value = passUser;

            db.openConnection();

            if (command.ExecuteNonQuery() == 1)
            {
                MessageBox.Show("Профиль успешно создан!");
            }

            else
                MessageBox.Show("Хмм... Возникли какие то ошибки, попробуй ещё раз!");

            db.closeConnection();
        }
    }
}