MVC 5中的異常，模型未在視圖中傳遞數據

Question

  public ActionResult CustomerOrders()
    {
        string cookieName = FormsAuthentication.FormsCookieName; //Find cookie name
        HttpCookie authCookie = HttpContext.Request.Cookies[cookieName]; //Get the cookie by it's name
        FormsAuthenticationTicket ticket = FormsAuthentication.Decrypt(authCookie.Value); //Decrypt it
        string UserName = ticket.Name;
        int UserID = context.Registers.Where(x => x.name == UserName).Select(x => x.id).FirstOrDefault();

       var data = (from i in context.Registers.Where(x => x.id == UserID)
                             join
                              c in context.Orders on i.id equals c.customer_id
                             into egroup
                             from k in egroup
                             join p in context.Products
                             on k.product_id equals p.product_id
                             select new
                             {
                                 p.price,
                                 // k.order_total,
                                 p.ImageUrl,
                                 p.ProductName

                             }).ToList() ;
        Products pr = new Products();

        return View(data);
       // return View(data);
    }

傳遞到字典中的模型項的類型為'System.Collections.Generic.List 1[<>f__AnonymousType3 3 [System.Nullable 1[System.Int32],System.String,System.String]]', but this dictionary requires a model item of type 'System.Collections.Generic.IEnumerable 1 [PetsApplication.Models.Products] 1[System.Int32],System.String,System.String]]', but this dictionary requires a model item of type 'System.Collections.Generic.IEnumerable

Answer 1

錯誤消息不言自明！ 在LINQ表達式中，您將結果投影到一個匿名對象列表中，並將其傳遞給視圖。 但是，您的視圖強烈屬於Products類的集合。

使用Product類將匿名對象投影更改為投影。

var data = (from i in context.Registers.Where(x => x.id == UserID)
            join c in context.Orders on i.id equals c.customer_id
            into egroup
            from k in egroup
            join p in context.Products
            on k.product_id equals p.product_id
            select new Products
            {
                price=p.price,                   
                ImageUrl=p.ImageUrl,
                ProductName=p.ProductName

            }).ToList();
 return View(data);

Answer 2

視圖是強類型的，並且要傳遞匿名類型，以創建一個列表項類，然后將其用作視圖模型以將數據傳遞給視圖。