public ItemGioHang(int IdGiay, int SL)
{
using (ShoeShopEntities1 data = new ShoeShopEntities1())
{
this.IdGiay = IdGiay;
Giay giay = data.Giays.Single(n => n.IdGiay == IdGiay);
this.TenGiay = giay.TenGiay;
this.HinhAnh = giay.HinhAnh;
this.DonGia = giay.DonGia.Value;
this.SoLuong = SL;
this.TongTien = DonGia * SoLuong;
}
}