using MySql.Data.MySqlClient; using NeshinaPolina07_11; 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 Neshina13 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { string login = textBox1.Text; string password = textBox2.Text; try { var db = DB.GetInstance(); var connection = db.GetConnection(); string query = "select count(*) from Mangers where Manager_Login = @login AND Manager_Password = @password"; using (var cmd = new MySqlCommand(query, connection)) { cmd.Parameters.AddWithValue("@login", login); cmd.Parameters.AddWithValue("@password", password); var result = cmd.ExecuteScalar(); if (result != null) { MessageBox.Show("Вход выполнен!"); Form2 form2 = new Form2(); form2.Show(); this.Hide(); // или Close(), если хотите закрыть форму } else { MessageBox.Show("Неверный логин или пароль"); } } } catch (Exception ex) { MessageBox.Show("Ошибка: " + ex.Message); } } } }