Пустая модель данных POST

Question

У меня есть представление с двумя раскрывающимися списками, первый с категорией продукта, а второй зависит от выбранного списка категорий продуктов. Когда нажимаете кнопку сохранения и ajax перенаправляете на Post AddOrEditPartial в контроллере, мой объект модели имеет только автоматически сгенерированные Id и CreateAt. Все остальные данные из выпадающих списков и поля количества равны нулю. Я не могу найти, в чем проблема. Может кто-нибудь помочь?

 public class Warehouse : BaseEntity
    {
        [Required(ErrorMessage = "Category Required")]
        public string IdCategory { get; set; }
        [Required(ErrorMessage = "Product Required")]
        public string IdProduct { get; set; }

        [Required(ErrorMessage = "Quantity required")]
        public int Quantity { get; set; }
    }

 public class WarehouseViewModel
    {
        public Warehouse Warehouse { get; set; }
        public IEnumerable<ProductCategory> ProductCategories1 { get; set; }

        public IEnumerable<Product> Products { get; set; }
    }

IndexView

 @using (Ajax.BeginForm("AddOrEditPartial", "Warehouse", new AjaxOptions() { HttpMethod = "POST", UpdateTargetId = "formsubmit", OnSuccess = "closePopUp(data)" }))
    {
        <div class="modal fade" id="myModal" role="dialog">
            <div class="modal-dialog modal-lg">
                <div class="modal-content">
                    <div class="modal-header">
                        <button type="button" class="close" data-dismiss="modal">&times;</button>
                        <h4 class="modal-title">Product</h4>
                    </div>
                    <div class="modal-body" id="modbody">
                        @Html.Partial("AddOrEditPartial")
                    </div>
                </div>
            </div>
        </div>
    }

PartialView

@model MyShop.Core.ViewModels.WarehouseViewModel

<div class="panel-group">
    <div class="panel-default">
        <div class="panel panel-success">
            <div class="panel-heading">Succes Implement Add/Edit Button</div>
            <div class="panel-body" id="panbody">
                <div class="col-sm-12">
                    @Html.AntiForgeryToken()

                    <div class="form-horizontal">
                        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
                        @Html.HiddenFor(model => model.Warehouse.Id)

                        <div class="form-group">
                            @Html.LabelFor(model => model.Warehouse.IdCategory, htmlAttributes: new { @class = "control-label col-md-2" })
                            <div class="col-md-10">
                                @Html.DropDownListFor(model => model.Warehouse.IdCategory, new SelectList(Model.ProductCategories1, "Category", "Category"), "Please select Category", new { @class = "form-control" })
                                @*@Html.DropDownListFor(model => model.Warehouse.Category, (IEnumerable<SelectListItem>)new SelectList(ViewBag.Cat, "Category", "Category"), "Please select Category", new { @class = "form-control" })*@

                            </div>
                        </div>

                        <div class="form-group">
                            @Html.LabelFor(model => model.Warehouse.IdProduct, htmlAttributes: new { @class = "control-label col-md-2" })
                            <div class="col-md-10">
                                @Html.DropDownListFor(model => model.Warehouse.IdProduct, (IEnumerable<SelectListItem>)new SelectList(ViewBag.Prod, "Name", "Name"), "Please Select Product", new { @class = "form-control" })
                            </div>
                        </div>

                        <div class="form-group">
                            @Html.LabelFor(model => model.Warehouse.Quantity, htmlAttributes: new { @class = "control-label col-md-2" })
                            <div class="col-md-10">
                                @Html.EditorFor(model => model.Warehouse.Quantity, new { htmlAttributes = new { @class = "form-control" } })
                                @Html.ValidationMessageFor(model => model.Warehouse.Quantity, "", new { @class = "text-danger" })
                            </div>
                        </div>
                        <div class="form-group">
                            <div class="col-md-offset-2 col-md-10">
                                <input type="submit" value="Save" class="btn btn-success" id="btnSubmit" />
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>
<script src="~/Scripts/jquery-3.4.1.min.js"></script>
<script  type="text/javascript"> 
    $(document).ready(function () {
        $("#Warehouse_IdCategory").change(function () {
            var prodId = $(this).val();
            console.log(prodId);
            //debugger
            $.ajax({
                type: "GET",
                url: '@Url.Action("GetProductList", "Warehouse")/' +prodId,
                data: { prodId: prodId },
                contentType: "html",
                success: function (response) {
                    //debugger
                    $("#Warehouse_IdProduct").empty();
                    $("#Warehouse_IdProduct").append(response);
                }
            })
        })
    })

</script>

Controller

 public ActionResult Index()
        {
            WarehouseViewModel whViewModel = new WarehouseViewModel();
            whViewModel.Warehouse = new Warehouse();
            whViewModel.ProductCategories1 = productCategories.Collection();
            whViewModel.Products = contextProduct.Collection();
            return View(whViewModel);
        }
  [HttpPost]
        public ActionResult AddOrEditPartial(Warehouse wh)
        {
            if (!ModelState.IsValid)
            {
                return Json(new { success = false });

            }
            else
            {
                var data = context.Find(wh.Id);
                if (data != null)
                {
                    data.IdProduct = wh.IdProduct;
                    data.IdCategory = wh.IdCategory;
                    data.Quantity = wh.Quantity;
                    context.Commit();
                }
                else
                {

                    context.Insert(wh);
                    context.Commit();
                }

                return Json(new { success = true });
            }

        }

Answer 1

@ УмайрЗафар

     public class ProductCategory : BaseEntity
    {
        [Required(ErrorMessage="Please fill category")]
        public string Category { get; set; }

    }
 
    public class Product : BaseEntity
    {
        [StringLength(20)]
        [DisplayName("Product Name")]
        [Required(ErrorMessage = "Please fill product name")]
        public string Name { get; set; }
        [DataType(DataType.MultilineText)]
        public string Description { get; set; }
        [Range(0,1000)]
        public decimal Price { get; set; }

        public string Category { get; set; }
        public string Image { get; set; }

    }
    
    public abstract class BaseEntity
    {
        public string Id { get; set; }
        public DateTimeOffset  CreatedAt { get; set; }

        public BaseEntity()
        {
            Id = Guid.NewGuid().ToString();
            CreatedAt = DateTime.Now;
        }
    }

Answer 2

Измените тип вашего IdCategory & IdProduct на int, и он должен работать.

public class Warehouse : BaseEntity
{
    [Required(ErrorMessage = "Category Required")]
    public int IdCategory { get; set; }
    [Required(ErrorMessage = "Product Required")]
    public int IdProduct { get; set; }

    [Required(ErrorMessage = "Quantity required")]
    public int Quantity { get; set; }
}