Uncaught SyntaxError: Unexpected number

[Pablo Emilio]

When inserting a new record or updating the Kendo Grid I get this error.

My Controller

using System;
using System.Linq;
using System.Web.Mvc;
using KaringBasico.Models;
using Kendo.Mvc.UI;
using Kendo.Mvc.Extensions;
using KaringHelper;

namespace KaringBasico.Controllers
{
    public class ActividadesEconomicasController : Controller
    {
        private readonly IUnitOfWork _uow;
        private readonly IRepository<actividades_economicas> selectedRepository;

        public ActividadesEconomicasController()
        {
            _uow = new UnitOfWork<BDKaringDataContext>();
            selectedRepository = _uow.GetRepository<actividades_economicas>();
        }

        public ActionResult Index()
        {
            ViewData["titulo_pagina"] = "Actividades Economicas";
            return View();
        }

        [AcceptVerbs(HttpVerbs.Post)]
        public ActionResult _Create([DataSourceRequest] DataSourceRequest request, actividades_economicas tabla)
        {
            try
            {
                if (TryUpdateModel(tabla))
                {
                    selectedRepository.Add(tabla);
                    _uow.Save();
                }
            }
            catch (Exception e)
            {
                ModelState.AddModelError(string.Empty, e.Message);
            }
            return Json(new[] { selectedRepository.GetAll() }.ToDataSourceResult(request, ModelState));
        }


        [AcceptVerbs(HttpVerbs.Post)]
        public ActionResult _Update([DataSourceRequest] DataSourceRequest request, string actividad_economica)
        {
            try
            {
                actividades_economicas tabla = selectedRepository.SearchFor(s => s.actividad_economica == actividad_economica).SingleOrDefault();
                if (tabla != null)
                {
                    if (TryUpdateModel(tabla))
                    {
                        _uow.Save();
                    }
                }
            }
            catch (Exception e)
            {
                ModelState.AddModelError(string.Empty, e.Message);
            }
            return Json(new[] { selectedRepository.GetAll() }.ToDataSourceResult(request, ModelState));
        }

        [AcceptVerbs(HttpVerbs.Post)]
        public ActionResult _Destroy([DataSourceRequest] DataSourceRequest request, string actividad_economica)
        {
            try
            {
                actividades_economicas tabla = selectedRepository.SearchFor(s => s.actividad_economica == actividad_economica).SingleOrDefault();
                if (tabla != null)
                {
                    selectedRepository.Delete(tabla);
                    _uow.Save();
                }
            }
            catch (Exception e)
            {
                ModelState.AddModelError(string.Empty, e.Message);
            }
            return Json(new[] { selectedRepository.GetAll() }.ToDataSourceResult(request, ModelState));
        }


        public ActionResult _Read([DataSourceRequest] DataSourceRequest request)
        {
            return Json(selectedRepository.GetAll().ToDataSourceResult(request));
        }
    }
}

My View

@model IEnumerable<KaringBasico.Models.actividades_economicas>

@{
    ViewBag.Title = "Actividades Economicas";
    Layout = "~/Views/Shared/_LayoutKendo.cshtml";
}

<h5><strong>@ViewBag.Title.</strong></h5>
@(Html.Kendo().Grid(Model)
    .Name("gridActividadesEconomicas")
    .Columns(columns =>
    {
        columns.Bound(p => p.actividad_economica).Width(160);
        columns.Bound(p => p.descripcion).Title("Descripción");
        
        columns.Command(command => { command.Edit(); command.Destroy(); }).Width(210);
    })
    .ToolBar(toolbar => toolbar.Create())
    .Editable(editable => editable.Mode(GridEditMode.InLine))
    .Pageable()
    .Sortable()
    .Scrollable()
    .Filterable()
    .Resizable(resize => resize.Columns(true))
    .ColumnMenu()
    .HtmlAttributes(new { style = "height:430px;" })
    .DataSource(dataSource => dataSource
        .Ajax()
        .PageSize(20)
        .Events(events => events.Error("error_handler"))
        .Model(model => model.Id(p => p.actividad_economica))

        .Create(update => update.Action("_Create", "ActividadesEconomicas"))
        .Read(read => read.Action("_Read", "ActividadesEconomicas"))
        .Update(update => update.Action("_Update", "ActividadesEconomicas"))
        .Destroy(update => update.Action("_Destroy", "ActividadesEconomicas"))
    )
)
<script type="text/javascript">
    function error_handler(e) {
        if (e.errors) {
            var message = "Errors:\n";
            $.each(e.errors, function (key, value) {
                if ('errors' in value) {
                    $.each(value.errors, function () {
                        message += this + "\n";
                    });
                }
            });
            alert(message);
        }
    }
</script>

Uncaught SyntaxError: Unexpected number

at.setter                                                                                                                                                kendo.all.min.js:9
lt.extend._set                                                                                                                                            kendo.all.min.js:11
Vt.extend.accept                                                                                                                                          kendo.all.min.js:11
lt.extend._accept                                                                                                                                        kendo.all.min.js:11
(anonymous function)                                                                                                                                      kendo.all.min.js:11
(anonymous function)                                     jquery-1.10.2.js:3218
fire                                                     jquery-1.10.2.js:3062
self.fireWith                                                                                                                                            jquery-1.10.2.js:3174
deferred.(anonymous function)                            jquery-1.10.2.js:3263
o.(anonymous function).call.X.success                    kendo.all.min.js:11
fire                                                                                                                                                      jquery-1.10.2.js:3062
self.fireWith                                                                                                                                            jquery-1.10.2.js:3174
done                                                                                                                                                      jquery-1.10.2.js:8249
callback                                                                                                                                                  jquery-1.10.2.js:8792

[Nimita]

how to resolve above error

[Eyup]

In the provided Grid code, the ID field is as follows:

.Model(model => model.Id(p => p.actividad_economica))

By default, Unique ID fields should not be editable. They are used in the database and in the Grid's CRUD operations as a unique value identifier to get the specific record to be modified.

However, in the captured screenshot it seems that the first column is not disabled from editing which can cause this issue. You can try to set the [ReadOnly(true)] Data Attribute to the ID field in your Model C# Class definition in order to remedy this problem:
https://docs.microsoft.com/en-us/dotnet/api/system.componentmodel.readonlyattribute?view=netframework-4.8