Practicka_Lebedenko/Registration.cs

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 Cafe11
{
    public partial class Registration : Form
    {
        public Registration()
        {
            InitializeComponent();
        }

        private void Registration_Load(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            string username = textBox5.Text;
            string password = textBox6.Text;
            string id = textBox4.Text;

            SqlConnection conn = new SqlConnection("Data Source=class31000;Initial Catalog=LebedenkoPratika;Integrated Security=True");
            conn.Open();

            // Поиск пользователя в базе данных
            SqlCommand cmd = new SqlCommand("INSERT INTO DataLogin (Login,Password,ID_Роли) Values (@Log,@Pass,@id)", conn);
            cmd.Parameters.AddWithValue("@Log", username);
            cmd.Parameters.AddWithValue("@Pass", password);
            cmd.Parameters.AddWithValue("@id", id);
            cmd.ExecuteNonQuery();
        }
    }
}