//DELETE THE RETURN BOOK =>PL private void BtnAccept_Click(object sender, RoutedEventArgs e) { try { ReturnedBook returned = dgReturn.SelectedItem as ReturnedBook; if (returned != null) { UserReturnBL userReturnBL = new UserReturnBL(); bool isDone1 = userReturnBL.DeleteReturnBL(returned.BookId, returned.UserId); BookBL bookBL = new BookBL(); bool isDone2 = bookBL.IncBookCopyBL(returned.BookId); if (isDone1 == true && isDone2 == true) { MessageBox.Show("Book taken back successfully..."); InitializeAdminReturn(); } else { MessageBox.Show("Try again..."); } } } catch (Exception) { MessageBox.Show("Some unknown exception is occured!!!, Try again.."); } }