TIS/AutReg/MainWindow.xaml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

using System.Data;
using System.Data.Sql;
using System.Data.SqlClient;
using System.Data.SqlTypes;


namespace AutReg
{
    /// <summary>
    /// Логика взаимодействия для MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        gr683_gddEntities db;

        public MainWindow()
        {
            InitializeComponent();
            db = new gr683_gddEntities();
        }

        private void Auto_Click(object sender, RoutedEventArgs e)
        {
            aut();
        }

         void aut()
        {
            if (login.Text == "" || passwordbox.Password == "")
            {
                MessageBox.Show("Поля не могут быть пустыми");
                return;
            }
            if (db.Users.Select(item => item.Login + " " + item.Password).Contains(login.Text + " " + passwordbox.Password))
            {
                MessageBox.Show("Вы авторизованы");

            }
            else
            {
                MessageBox.Show("Вы не авторизованы");
            }

        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            Window1 w1 = new Window1();
            w1.Show();
            this.Close();
        }

        private void Progect2_Click(object sender, RoutedEventArgs e)
        {
            Window3 w3 = new Window3();
            w3.Show();
            this.Close();
        }
    }
}