private void SaveButton_Click(object sender, RoutedEventArgs e)
        {
            if (ModelCheck())
            {
                try
                {
                    _user.Login               = LoginTextBox.Text;
                    _user.Password            = PassTextBox.Text;
                    _reader.FIO               = FIOTextBox.Text;
                    _reader.Phone             = PhoneTextBox.Text;
                    _reader.Rating            = int.Parse(RatingTextBox.Text);
                    _reader.BirthDate         = BirthDatePicker.SelectedDate;
                    _user.RoleId              = RoleComboBox.SelectedIndex + 1;
                    _reader.IsCollegeEmployee = (bool)IsEmpCheckBox.IsChecked;
                    _user.IsBlocked           = (bool)IsBlockedCheckBox.IsChecked;

                    if (_reader.ReaderId == 0)
                    {
                        dBQueryHelper.AddUserWithReader(_reader, _user);
                        this.Close();
                    }
                    else
                    {
                        eLibraryDBEntities.SaveChanges();
                        this.Close();
                    }
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.ToString());
                }
            }
        }
 private void EnterButton_Click(object sender, RoutedEventArgs e)
 {
     if (ModelCheck())
     {
         try
         {
             _user.Login               = LoginTextBox.Text;
             _user.Password            = PassTextBox.Text;
             _user.IsBlocked           = false;
             _user.RoleId              = 1;
             _reader.FIO               = FIOTextBox.Text;
             _reader.BirthDate         = BirthDatePicker.SelectedDate;
             _reader.Phone             = PhoneTextBox.Text;
             _reader.IsCollegeEmployee = IsEmpCheckBox.IsChecked;
             _reader.Rating            = 0;
             dBQueryHelper.AddUserWithReader(_reader, _user);
             AuthorizationWindow mainWindow = new AuthorizationWindow();
             mainWindow.Show();
             this.Close();
         }
         catch (Exception ex)
         {
             MessageBox.Show(ex.ToString());
         }
     }
 }