78 lines
2.7 KiB
C#
78 lines
2.7 KiB
C#
// ВАЖНО: Подключаем библиотеку MySQL, а не SQL Server!
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using MySql.Data.MySqlClient;
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using System;
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using System.Windows.Forms;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Drawing;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace _0303RogovaNeshina
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{
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public partial class Form1 : Form
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{
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public Form1()
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{
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InitializeComponent();
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}
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private void btAutorization_Click(object sender, EventArgs e)
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{
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string login = tbLogin.Text;
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string password = tbPass.Text;
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if (string.IsNullOrWhiteSpace(login) || string.IsNullOrWhiteSpace(password))
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{
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MessageBox.Show("Введите логин и пароль!");
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return;
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}
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string connectionString = "Server=cfif31.ru; port=3306; Database=ISPr25-21_NeshinaPV_0303; username=ISPr25-21_NeshinaPV; password=ISPr25-21_NeshinaPV";
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string query = "SELECT * FROM librarians WHERE login = @login AND password = @password";
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try
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{
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using (MySqlConnection conn = new MySqlConnection(connectionString))
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{
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conn.Open();
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using (MySqlCommand cmd = new MySqlCommand(query, conn))
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{
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cmd.Parameters.AddWithValue("@login", login);
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cmd.Parameters.AddWithValue("@password", password);
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object result = cmd.ExecuteScalar();
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if (result != null && Convert.ToInt32(result) > 0)
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{
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MessageBox.Show("Успешный вход!", "Успех", MessageBoxButtons.OK, MessageBoxIcon.Information);
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MainForm mainForm = new MainForm();
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mainForm.Show();
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this.Hide();
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}
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else
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{
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MessageBox.Show("Неверный логин или пароль", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
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}
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}
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}
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}
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catch (Exception ex)
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{
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MessageBox.Show("Ошибка: " + ex.Message, "Критическая ошибка");
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}
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}
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private void Form1_Load(object sender, EventArgs e)
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{
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}
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private void lblReg_Click(object sender, EventArgs e)
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{
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Registration Registration = new Registration();
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Registration.Show();
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this.Hide();
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}
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}
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} |