ComboBox + Ajax + WCF = 'undefined' items in Combobox

[Kevin]

I have a REST service that outputs the following json using GET:

[{"Active":true,"DisplayText":"Flyers","TemplateCategoryID":1},{"Active":true,"DisplayText":"Door Hangers","TemplateCategoryID":2},{"Active":true,"DisplayText":"Postcards","TemplateCategoryID":3},{"Active":true,"DisplayText":"Tri-Fold","TemplateCategoryID":4},{"Active":true,"DisplayText":"Facebook Graphics","TemplateCategoryID":5}]

My Combobox setup looks like this:

@(Html.Kendo().ComboBox()  

        .Name("templateCat") //The name of the combobox is mandatory. It specifies the "id" attribute of the widget.

        .DataTextField("DisplayText") //Specifies which property of the Product to be used by the combobox as a text.

        .DataValueField("TemplateCategoryID") //Specifies which property of the Product to be used by the combobox as a value.

        .Filter(FilterType.Contains)

    .DataSource(source =>

    {

     

        source.Read(read =>

        {

            read.Action("GetTemplateCategories", "Console"); //Set the Action and Controller name         

        });

    })

    .SelectedIndex(0) //Select first item.

)

My Controller:

public ActionResult GetTemplateCategories()

{

    string baseAddress = string.Format(ConfigurationManager.AppSettings["MarketingServiceAddress"] + "GetTemplateCategories");

    HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(baseAddress);

    request.Method = "GET";

    request.ContentType = "text/plain";

 

    using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)

    {

        int statusCode = (int)response.StatusCode;

        StreamReader reader = new StreamReader(response.GetResponseStream());

        string results = reader.ReadToEnd();

 

        

 

        return Json(results, JsonRequestBehavior.AllowGet);

    }

}

My combobox looks like it is binding to some sort of data, but all items in the list are 'undefined'.  What am I doing wrong?  I have verified that the controller is receiving the json string just fine from service.

[Kevin]

[SOLUTION]

So if you already have a Json string, you don't need to return JsonResults.  

Simply replace:

return Json(results, JsonRequestBehavior.AllowGet);

With:

return new ContentResult { Content = results, ContentType = "application/json" };

In hindsight, this was a 'doh' moment...