public IActionResult ChiTietDonMua(string id) { string sessionval = HttpContext.Session.GetString("TenDangNhap"); TaiKhoanBUS taikhoanbus = new TaiKhoanBUS(); TaiKhoan taikhoan = new TaiKhoan(); DonHangBUS donhangbus = new DonHangBUS(); DonHang donhang = new DonHang(); List <ChiTietDonHang> listchitietdonhang = new List <ChiTietDonHang>(); if (sessionval != "" && sessionval != null) { taikhoan = taikhoanbus.CheckTaiKhoan(sessionval); donhang = donhangbus.GetExactDonHang(id); listchitietdonhang = donhangbus.GetExactChiTietDonHang(id); } else { taikhoan = null; donhang = null; } HangSanPhamBUS hangsanphambus = new HangSanPhamBUS(); List <HangSanPham> hang = hangsanphambus.GetHangSanPhams(); ViewBag.Hang = hang; ViewBag.TaiKhoan = taikhoan; ViewBag.ChiTietDonHang = listchitietdonhang; //Kiểm tra có cho huỷ hay không bool huydonhang; List <ChiTietDonHang> listhuydon = listchitietdonhang.Where(c => c.TinhTrangChiTiet != "Chưa xử lý").ToList(); if (listhuydon.Count == 0) { huydonhang = true; } else { huydonhang = false; } ViewBag.HuyDonHang = huydonhang; return(View(donhang)); }