private void Delete(object param) { if (SelectedBook != null) { BookList.Remove(SelectedBook); _bookLibrary = BookList.ToIEnumerable <Book>(); SelectedBook = BookList.LastOrDefault(); MessageBox.Show("删除成功!", "提示"); } }
private void Add(object param) { Book newBook = new Book() { ID = (Convert.ToInt32((from b in BookList.Cast <Book>() select b.ID).Max <string>()) + 1).ToString() }; BookList.Add(newBook); _bookLibrary = BookList.ToIEnumerable <Book>(); SelectedBook = newBook; }