ASP.NET CORE AJAX request

I want to submit my form data, but before I wanted to check my query and get the data in the
objOrderViewModel
I checked with debugger, no data comes, only DateTime, what could be the problem?

Controller

[HttpPost]
        public JsonResult Index(OrderViewModel objOrderViewModel)
        {          
            return Json(data: "");
        }

My js

       var objOrderViewModel = {};
       var ListOrderDetailViewModel = new Array();
       objOrderViewModel.PaymentTypeId = $("#PaymentType").val();
       objOrderViewModel.CustomerId = $("#Customer").val();
       objOrderViewModel.FinalTotal = $("#txtFinalTotal").val();
       $("#tblRestaurantItemList").find("tr:gt(0)").each(function () {
           var objOrderDetailViewModel = {};
           objOrderDetailViewModel.ItemId = $(this).find("td:eq(0)").text();
           objOrderDetailViewModel.Quantity = $(this).find("td:eq(3)").text();
           objOrderDetailViewModel.Total = $(this).find("td:eq(5)").text();
           objOrderDetailViewModel.Discount = $(this).find("td:eq(4)").text();
           objOrderDetailViewModel.UnitPrice = $(this).find("td:eq(2)").text();
           ListOrderDetailViewModel.push(objOrderDetailViewModel);
       });
       objOrderViewModel.listOrderDetailViewModel = ListOrderDetailViewModel;

       $.ajax({
           async: true,
           type: 'POST',
           dataType: 'JSON',
           contentType: 'application/json; charset=utf-8',
           data: JSON.stringify(objOrderViewModel),
           url: '/home/Index',
           success: function (data) { alert(data) },
           error: function () { alert('There is some problem to get the unit price.') }
       });

       ResetItems();
       ResetItemsDetails();
   }

My Model

 public class OrderViewModel
    {
        public int OrderId { get; set; }
        public int PaymentTypeId { get; set; }
        public int CustomerId { get; set; }
        public string OrderNumber { get; set; }
        public DateTime OrderDate { get { return DateTime.Now; } }
        public decimal FinalTotal { get; set; }
        public IEnumerable<OrderDetailViewModel> listOrderDetailViewModel { get; set; }
    }

public class OrderDetailViewModel
    {
        public int OrderDetailId { get; set; }
        public int ItemId { get; set; }
        public decimal Quantity { get; set; }
        public decimal Total { get; set; }
        public decimal UnitPrice { get; set; }
    }

Thanks a lot

EDIT: I forgot to put single quotes around the __RequestVerificationToken in the GetToken() function. They are there now.

This answer assumes you have [AutoValidateAntiforgeryToken] in your controller.

You need to submit the anti-forgery token, since it is a POST. POSTS require the anti-forgery token when validation tags are applied in the controller. In AJAX, you need to add the token manually.

At the top of your CSHTML file, add this line: @Html.AntiForgeryToken(). This is your manual anti-forgery token.

You may want to make this JavaScript function for future convenience.

function GetToken() {
    return document.querySelector("[name='__RequestVerificationToken']").value;
}

Add a parameter to your data that you send through AJAX. This parameter should be named __RequestVerificationToken and its value should be GetToken(), which is the value of the anti-forgery token, coming from the JavaScript function above.