private void ButtonLogin_OnClick(object sender, RoutedEventArgs e)
 {
     if (TextBoxEmail.Text.Length > 0 && PasswordBox.Password.Length > 0)
     {
         _presenter.LoginClick();
     }
     else
     {
         MessageBox.Show("Please enter email and password!", "Ooops...", MessageBoxButton.OK,
                         MessageBoxImage.Error);
     }
 }