[Solved] ComboBox Autocomplete Ajax Error 500

[Steve]

Hi,

  I'm using release 2011.1.315 and I have a problem with an Ajax ComboBox filterable bound in my telerik Grid.  When the result from filter entered by user return nothing, I got an error 500.  could you help me please?

<% var controlName = ViewData.TemplateInfo.GetFullHtmlFieldName(String.Empty);
   Html.Telerik().ComboBox()
   .Name(controlName)
   .DataBinding(binding => binding.Ajax().Select("_InstructeursAjaxLoading", "RapportCours"))
    .Filterable(filtering => filtering.FilterMode(AutoCompleteFilterMode.Contains).MinimumChars(2))
        .HighlightFirstMatch(true)
        .HtmlAttributes(new { style = "width:250px" })
            .Render();
 %>

Thanks

[Steve]

Hi,

    This problem is still there with release 2011.2.712.

Help me please
Steve

[Atanas Korchev]

Hi Steve,

Error 500 means that there is a server side exception in your action method. I suggest you break with the debugger and see what went wrong.

Regards,
Atanas Korchev
the Telerik team

[Steve]

Thanks for your help.  I know it is supposed to be a server exception, but server-side code returns ok.  I just found the problem is I didn't filter in ajax loading code.  Here is the full code.

[HttpPost]
public ActionResult _InstructeursAjaxLoading(string text, string contexte)
{
    var instructeur = _container.GetInstructeurs();

    var userAuth = this.HttpContext.User.GetAsjIdentity();
    if (text != null)
    {
        instructeur = instructeur.Where((p) => p.Nom.Contains(text));
    }

    return new JsonResult
    {
        Data = new SelectList(instructeur.ToList(), "Pk",
            "Nom", contexte == "Secondaire" ? (Guid?)null : userAuth.Pk_MembreId)
    };
}

Those lines are new and has corrected the problem.

if (text != null)
{
    instructeur = instructeur.Where((p) => p.Nom.Contains(text));
}

Thanks