private void RefreshForm()//обновляет информацию на форме { ListLibraryBooks.Items.Clear(); ListReaderBooks.Items.Clear(); foreach (Book book in library.GetBooks())// вывод книг в библиотеке { ListLibraryBooks.Items.Add(book.Name + " " + book.Author); } foreach (Reader reader in library.GetReaders())// вывод книг выбранного пользователя { if (reader.ID == ReadersComboBox.SelectedIndex) { foreach (Book book in reader.GetBooks()) { ListReaderBooks.Items.Add(book.Name + " " + book.Author); } } } if (ReaderRadioButton.Checked) { ListLibraryBooks.Enabled = true; ListReaderBooks.Enabled = false; } else { ListLibraryBooks.Enabled = false; ListReaderBooks.Enabled = true; } }