private void LoadDaTaChiTietHoaDon(int idHoaDon) { List <CHI_TIET_HOA_DON> l = _hoaDonBLL.LayChiTietHoaDonTheoIDHoaDon(idHoaDon); dtHoaDon = Utils.Util.ConvertToDataTable(l); dtHoaDon.Columns.Add("Don_Vi", typeof(int)); dtHoaDon.Columns.Add("Don_Gia", typeof(int)); dtHoaDon.Columns.Add("Thanh_Tien", typeof(int)); gridControl_HoaDon.DataSource = dtHoaDon; for (int i = 0; i < l.Count; i++) { dtHoaDon.Rows[i]["Don_Vi"] = _monBLL.LayDonViTinh(l[i].ID_Mon); dtHoaDon.Rows[i]["Don_Gia"] = _monBLL.LayDonGia(l[i].ID_Mon); int t = int.Parse(gridView_HoaDon.GetRowCellValue(i, "So_Luong").ToString()) * (int)_monBLL.LayDonGia(l[i].ID_Mon); dtHoaDon.Rows[i]["Thanh_Tien"] = t; } ThanhToan(); txt_ThanhToan.Text = String.Format("{0:0,0}", ThanhToan()); tb_VAT.Text = _thamsoBLL.LayVAT().ToString(); tb_GiamGia.Text = "0"; }