public IActionResult Index(string id)
        {
            string idd = id ?? "B77D9CF5-E9A2-4D31-9490-25E4E3971C61";
            //BUS
            SanPhamBUS     sanphambus     = new SanPhamBUS();
            SizeSanPhamBUS sizesanphambus = new SizeSanPhamBUS();
            GioHangBUS     giohangbus     = new GioHangBUS();
            DiaChiBUS      diachibus      = new DiaChiBUS();

            SanPham sanpham = sanphambus.GetSanPham(idd);

            DiaChi diachi = diachibus.GetDiaChiMer(sanpham.IdTaiKhoanNavigation.TenDangNhap);

            ViewBag.DiaChiMerchant = diachi;

            List <SizeSanPham> listsizesanpham = sizesanphambus.GetSize(idd);

            ViewBag.ListSizeSanPham = listsizesanpham;

            List <HangSanPham> hang = ctx.HangSanPham.ToList();

            ViewBag.Hang = hang;

            List <SanPham> spmoi = sanphambus.GetSanPhams("", "", 1, 4);

            ViewBag.SanPhamMoi = spmoi;

            return(View(sanpham));
        }
        public IActionResult ChiTiet(string Ma)
        {
            SanPham            sp              = ctx.SanPham.Where(s => s.MaSanPham == Ma).SingleOrDefault();
            SanPhamBUS         sanphambus      = new SanPhamBUS();
            SizeSanPhamBUS     sizesanphambus  = new SizeSanPhamBUS();
            GioHangBUS         giohangbus      = new GioHangBUS();
            List <SizeSanPham> listsizesanpham = sizesanphambus.GetSize(Ma);

            ViewBag.ListSizeSanPham = listsizesanpham;
            List <HangSanPham> hang = ctx.HangSanPham.ToList();

            ViewBag.Hang = hang;
            return(View("ChiTiet"));
        }
        public int CheckSoLuongSP(string idsizesanpham)
        {
            SizeSanPhamBUS sizesanphambus = new SizeSanPhamBUS();

            return(sizesanphambus.GetSoLuong(idsizesanpham));
        }