Submission of Form and Data from Table to ASP .NET Controller by AJAX

This is my first question on this platform. I am new with the ASP .NET framework and I have a problem that I tell you:

I have a table that is generated as products are added to it to be billed. I also have a form with the data of the invoice.

I need to send them to the controller to be processed.

a class that contains the products that are in the "ProdutosT" table, another that receives the data from the DatosF invoice. and Finally a class that receives an DatosF object and a list of ProductosT.

The problem is that I can not make the two elements arrive, the form of the data and the products to the controller

//clases
    public class ProductoT
    {
        public string codigo { get; set; }
        public float cantidad { get; set; }
        public float precio { get; set; }
    }

public class DatosF
{
    public string Fecha { get; set; }
    public string Cliente { get; set; }
    public string TipoPago { get; set; }
    public string PrecioSelect { get; set; }
    public string DiasCredito { get; set; }
    public string Vendedor { get; set; }
    public string PrecioEditable { get; set; }
    public string Observacion { get; set; }
}
public class FaturaPuntoV
{
    public DatosF datosF { get; set; }
    public List productosF { get; set; }
}

//Javascript
$(".pagar").click(function () {
            var TableData = new Array();

    $('#tabla_productoF tr').each(function (row, tr) {
        TableData[row] = {
            "codigo": $(tr).find('td:eq(2)').text()
            , "cantidad": $(tr).find('td .cantidadProducto').val()
            , "precio": $(tr).find('td .precioItemN').val()
        }
    });

    (function ($) {
        $.fn.serializeFormJSON = function () {

            var o = {};
            var a = this.serializeArray();
            $.each(a, function () {
                if (o[this.name]) {
                    if (!o[this.name].push) {
                        o[this.name] = [o[this.name]];
                    }
                    o[this.name].push(this.value || '');
                } else {
                    o[this.name] = this.value || '';
                }
            });
            return o;
        };
    })(jQuery);
    y = new Array();
    var i = $("#FormularioFactura").serializeFormJSON();


    y.push({ DatosF: i });
    y.push({ ProductosT: TableData });
    console.log(JSON.stringify(y));
    $.ajax({
        url: 'FacturacionPuntoV/Create',
        type: 'POST',
        dataType: 'json',
        traditional: true,
        contentType: "application/json,utf-8",
        data: JSON.stringify(y),
        async: true,
        cache: false,
        beforeSend: function (result) {
        },
        success: function (result) {