private void Showbill(int id) { lsvBill.Items.Clear(); txtTongTien.Text = ""; float tongtien = 0; List <MenuDTO> lst = MenuDAO.GetListMenuByBillInfoID(id); //List<BillInfoDTO> lst = BillInfoDAO.GetListBillIfnfoByIDBill(BillDAO.GetUncheckedBillIDByTableID(id)); foreach (MenuDTO item in lst) { ListViewItem lsvitem = new ListViewItem(item.Foodname.ToString()); lsvitem.SubItems.Add(item.Count.ToString()); lsvitem.SubItems.Add(item.Dongia.ToString()); lsvitem.SubItems.Add(item.Thanhtien.ToString()); tongtien += item.Thanhtien; CultureInfo culture = new CultureInfo("vi-VN"); thanhtoan = tongtien; txtTongTien.Text = tongtien.ToString("c", culture); lsvBill.Items.Add(lsvitem); } }