Hi, folk

 I am having a weird problem now, when I use MVC Action to return a JSON string like following.

public ActionResult SearchSegment(string keyword)
        {
            return Json(new {foo = "bar", baz = "Blech"});
        }

But when I try to retrieve the return value using following code , I get the object not defined error. Can anyone help me out? Thanks.  

 function SearchCompleteHandler(data) {
        alert(data.foos);
       
    }

C# code: foo
JavaScript code: foos

sorry, this is the typo, I am using following code. Still get the "undefinied" error

    function SearchCompleteHandler(data) {
        alert(data.foo);   
    }

I don't know how to you handle AJAX and Json in JavaScript - do you use jQuery or pure JavaScript?
I would like to recommend to use jQuery getJSON function.
These articles could help: http://www.ajaxprojects.com/ajax/tutorialdetails.php?itemid=399 http://geekswithblogs.net/michelotti/archive/2008/06/28/mvc-json---jsonresult-and-jquery.aspx

Here is the code I used to issue the request.

OK. OnSucces callback function is called with one parameter and type of this parameter is System.Mvc.AjaxContext. So you should call something like "data.get_data().foo" in your JavaScript code.