private void BtnAdd_Click(object sender, RoutedEventArgs e)
{
if (selected == null)
{
string name = txtName.Text;
string author = txtAuthor.Text;
string category = txtCategory.Text;
string price = txtPrice.Text;
string amount = txtAmount.Text;
string idCategory = TheLoaiBUS.addCategory(category);
string idAuthor = TacGiaBUS.addAuthor(author);
SachDTO sach = new SachDTO();
sach.DonGia = price;
sach.LuongTon = amount;
sach.TenSach = name;
sach.TenTacGia = idAuthor;
sach.TenTheLoai = idCategory;
int result = SachBUS.AddBook(sach);
List <SachDTO> listBook = SachBUS.GetAll();
dtgBook.ItemsSource = listBook;
dtgBook.Items.Refresh();
int Price = int.Parse(price);
int Amount = int.Parse(amount);
TotalCost += Price * Amount;
lblTotal.Text = TotalCost.ToString();
}
else
{
selected.LuongTon = txtAmount.Text;
int Price = int.Parse(selected.DonGia);
int Amount = int.Parse(selected.LuongTon);
TotalCost += Price * Amount;
lblTotal.Text = TotalCost.ToString();
int result = SachBUS.ChangeAmount(selected);
if (result < 0)
{
MessageBox.Show("Thêm sách thất bại", "Lỗi", MessageBoxButton.OK, MessageBoxImage.Error);
}
}
}
