private void removeSeletedItem() { BookToShow temp = SelectedItem; DataLoadFromDB data = DataLoadFromDB.getIntance(); MessageBoxResult dialogResult = MessageBox.Show("Ensure that you want to delete this item from member reserved list! It can't be undo", "Warning", MessageBoxButton.OKCancel, MessageBoxImage.Warning); if (dialogResult == MessageBoxResult.OK) { ConfirmBooks.Remove(temp); BookItem tempBookItem = data.findBookItemByID(int.Parse(temp.Id)); CurrentMember current = CurrentMember.getInstance(); current.GetAccount().removeBookToReserveBookList(tempBookItem, "CANCELED"); } else { return; } }