[Solved] Combobox - Load on demand - Ajax - Error 404

[Francis Maestri]

Hi, I have been using Telerik for more than a year and it is the first time that I am stuck in a problem that I can't solve. After one day of tests, I have to call for help :)

I am trying to use the combobox from telerik (MVC3 - Razor), example here : http://demos.telerik.com/aspnet-mvc/razor/combobox/ajaxloading

But I can't make it work. Instead of calling the correct URL in the Ajax call, it calls localhost:portnumber/Home/null with the correct data post (text : somestring) so I have a dialog message : Error! The requested URL returned 404 - Not Found

I am using version 2011.3.1115
With previous version (2011.2.914), I have the same error.

I am surely doing something wrong but I can't see what...

Here is my code

View (Test.cshtml)

@{
    ViewBag.Title = "Test";
    Layout = string.Empty;
}

<h2>Test</h2>
Search :             @(Html.Telerik().ComboBox()
                .Name("AjaxComboBox")
                .AutoFill(true)
                .DataBinding(binding => binding.Ajax().Select("_Search", "Home"))
                .Filterable(filtering =>
                    {
                        filtering.MinimumChars(3);
                    })
                .HighlightFirstMatch(true)
                )


@(Html.Telerik().ScriptRegistrar().jQuery(true).Globalization(true).DefaultGroup(group => group.Combined(true).Compress(true)))

My controller (HomeController)

    public class HomeController : Code.MyBaseController
    {

        public ActionResult Test()
        {
            return View();
        }

        [HttpPost]
        public ActionResult _Search(string text)
        {
            if (text.Length < 3)
            {
                return new JsonResult { Data = null };
            }
            Search s = new Search();
            var result = s.SearchText(text, 10);
            return new JsonResult { Data = result };
        }
    }

Base controller :

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.IO;

namespace SiteSC2.Code
{
    public abstract class MyBaseController : Controller
    {
        private string title;
        protected string Title
        {
            get
            {
                return title;
            }
            set
            {
                title = value;
                ViewBag.Title = value;
            }
        }


        protected string RenderPartialViewToString()
        {
            return RenderPartialViewToString(null, null);
        }

        protected string RenderPartialViewToString(string viewName)
        {
            return RenderPartialViewToString(viewName, null);
        }

        protected string RenderPartialViewToString(object model)
        {
            return RenderPartialViewToString(null, model);
        }

        protected string RenderPartialViewToString(string viewName, object model)
        {
            if (string.IsNullOrEmpty(viewName) == true)
            {
                viewName = ControllerContext.RouteData.GetRequiredString("action");
            }

            ViewData.Model = model;

            using (StringWriter sw = new StringWriter())
            {
                ViewEngineResult viewResult = ViewEngines.Engines.FindPartialView(ControllerContext, viewName);
                ViewContext viewContext = new ViewContext(ControllerContext, viewResult.View, ViewData, TempData, sw);
                viewResult.View.Render(viewContext, sw);

                return sw.GetStringBuilder().ToString();
            }
        }

        public MyBaseController()
        {
        }

    }
}

Global.asax

routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

routes.MapRoute(
    "Default", // Route name
    "{controller}/{action}/{id}/{language}", // URL with parameters
    new { controller = "Home", action = "Index", language=UrlParameter.Optional, id = UrlParameter.Optional } // Parameter defaults
);

Thanks in advance for your help.

Francis.

[Georgi Tunev]

Hi Francis,

Your code looks OK and at this point I cannot tell what the reason for the problem might be. Could you please provide a sample project so I can examine your exact scenario and current logic more closely? I will check it and get back to you right away.



Greetings,
Georgi Tunev
the Telerik team

[Francis Maestri]

Hi Georgi,

After making a sample project which was working fine, I finally found the bug. It was a routing problem.

so with .DataBinding(binding => binding.Ajax().Select("_Search", "Home", new {id = "something", language = "sv"} )) for the view
and public ActionResult _Search(string text, string id, string language) for the controller

everything is working fine.

sorry for the annoyance.

Francis.