private void DeletOrder(object sender, RoutedEventArgs e)
{
Button button = sender as Button;
if (button != null)
{
var result = MessageBox.Show("Вы хотите вернуть книгу", "Возврат", MessageBoxButton.YesNo, MessageBoxImage.Warning);
if (result == MessageBoxResult.Yes)
{
int id = (int)button.Tag;
Issuance_Books issuance = Connection.library.Issuance_Books.Find(id);
issuance_Books.Remove(issuance);
Connection.library.Issuance_Books.Remove(issuance);
Books = Connection.library.Books.Find(issuance.Books_id);
Books.count++;
try
{
Connection.library.SaveChanges();
}
catch (DbUpdateException)
{
MessageBox.Show("При удалении произошла ошибка.");
Connection.library.Issuance_Books.Add(issuance);
issuance_Books.Add(issuance);
}
Connection.library.SaveChanges();
}
}
}
public AddOrderBook()
{
InitializeComponent();
book = new Books();
newOrder = new Order();
newissuanceBooks = new Issuance_Books();
ReadersComboBox.ItemsSource = Connection.library.Readers.ToList();
BooksComboBox.ItemsSource = Connection.library.Books.ToList().Where(x => x.count > 0);
}