尝试在 asp.net mvc5

如何解决尝试在 asp.net mvc5

我首先尝试使用实体框架代码制作电子商务网站，但篮子有问题我不需要添加银行账户或任何类型的付款方式是货到付款我准备好图标作为按钮

<dd>
                        @Html.ActionLink("Add","Basket",new { id = this.Model.Id },new { @class = "btn btn-primary"})
                    </dd>

一旦点击它就会激活动作方法

public ActionResult Basket(int Id)
    {
        PB.basket(Id);
        return View();
    }

witch 会激活一个叫做 bag 的方法

public void basket(int Id)
    {
        List<Basket> bst = new List<Basket>();
        var user = HttpContext.Current.Session.SessionID;
        var prd = db.Products.Where(p => p.Id == Id).FirstOrDefault();
        bst.Add(new Basket()
        {
            Price = prd.Price,ProductId = prd.Id,Count = 1,}) ;
    }

这里是创建数据库的类 使用身份

  public class users
    {
        public string Id { get; set; }
        public string UserName { get; set; }
        public string Email { get; set; }
        public string Address { get; set; }
        public string PhoneNumber { get; set; }
    }

 public class Product
    {
        public int Id { get; set; }
        [display(Name = "Product Name")]
        public string ProductName { get; set; }
        [DataType(DataType.ImageUrl)]
        public string Image { get; set; }
        public string Category { get; set; }
        public double Price { get; set; }
        [DataType(DataType.Text)]
        public string Description { get; set; }
        [NotMapped]
        public HttpPostedFileBase ImageFile { get; set; }
    }
 public class Basket
    {
        public int Id { get; set; }
        public int ProductId { get; set; }
        public int Count { get; set; }
        public double Price { get; set; }
        public ApplicationUser user { get; set; }
        public Product Product { get; set; }
        public ICollection<Product> products { get; set; }
        public ICollection<ApplicationUser> users { get; set; }
    }

请帮忙