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Home/ Questions/Q 6183227
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Editorial Team
  • 0
Editorial Team
Asked: May 24, 20262026-05-24T01:19:44+00:00 2026-05-24T01:19:44+00:00

I get two following errors in my ASP.NET MVC 3 project: Error 1 The

  • 0

I get two following errors in my ASP.NET MVC 3 project:

Error 1 The best overloaded method match for
‘SklepAlfa.Models.ProduktyController.Edytuj(int,
SklepAlfa.Models.ProduktyEdytujViewModel)’ has some invalid arguments

Error 2 Argument 2: cannot convert from
‘System.Web.Mvc.FormCollection’ to
‘SklepAlfa.Models.ProduktyEdytujViewModel’

Here is my ProduktyEdytujViewModel.cs:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web;
using SklepAlfa.Models;
using System.Web.Mvc;

namespace SklepAlfa.Models
{
    public class ProduktyEdytujViewModel
    {
        public Produkty Produkt { get; set; }
        public int id_produktu { get; set; }
        public IEnumerable<Kategorie_produktow> Kategorie { get; set; }
    }
}

And here it is used in my controller:

    public ActionResult Edytuj(int id) //Edit
    {
        var model = new ProduktyEdytujViewModel //ProductsEditViewModel
        {
            Produkt = sklepBaza.PobierzProduktWgId(id), //GetProductById
            Kategorie = sklepBaza.PobierzKategorieProduktow() //GetProductCategories
        };

        return View(model);
    }

    [HttpPost]
    public ActionResult Edytuj(int id, ProduktyEdytujViewModel model) 
    {
        if (!ModelState.IsValid)
        {
            model.Produkt = sklepBaza.PobierzProduktWgId(id); 
            model.Kategorie = sklepBaza.PobierzKategorieProduktow(); 
            return View(model);
        }
        return RedirectToAction("Kategorie");
    }

What am I doing wrong? Thank you in advance.

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1 Answer

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  1. Editorial Team
    Editorial Team
    2026-05-24T01:19:44+00:00Added an answer on May 24, 2026 at 1:19 am

    In the post action you can pass just the model object and it will contain the id

    [HttpPost]
    public ActionResult Edytuj(ProduktyEdytujViewModel model) 
    {
        if (!ModelState.IsValid)
        {
            model.Produkt = sklepBaza.PobierzProduktWgId(model.id); 
            model.Kategorie = sklepBaza.PobierzKategorieProduktow(); 
            return View(model);
        }
        return RedirectToAction("Kategorie");
    }
    
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