Question

For school, i have to develop a Twitter client with ASP.NET.

In the app, i have a list of tweets with a delete link. This link is created with the helper Ajax.ActionLink() and i specified a callback function for OnSuccess event.

This link is okay : the action is performed, the callback is triggered BUT i can’t access data sent in the Ajax response.

The callback receive only one argument. Here is the dump of this object :

>> Sys.Mvc.AjaxContext
$0: 0
$1: null
$2: Sys.Net.XMLHttpExecutor
$3: Sys.Net.WebRequest
$4: null

Where is my responseText ? I know that the response has a content (according to Chrome developer tools) and i really want to access it.

Bonus : can Ajax client automatically parse the response as JSON (the action returns JSON properly with the JSON method) ?

Thanks ! 😉

---

The deadline of this school project is over.
I used get_data on the response.

I’m quite disappointed by the lack of documentation for this trivial need. Even now i know the way, i can’t find that on MSDN… Such a pity. 🙁

Back to my precious Ruby on Rails, i feel better.

Good day and thanks for your help anyway ! 🙂

Answer 1

Try calling get_object() on your AjaxContext to get a javascript object or get_data() to get the text. An easier method though is to have your OnSuccess function take an argument which will be the object returned.

public ActionResult ReturnJson()
{
    return Json(new { TestMessage = "Hello, world!" }, JsonRequestBehavior.AllowGet);
}

And the view…

<script type="text/javascript">
    function AjaxSuccess(obj) {
        alert(obj.TestMessage);
    }
</script>

@Ajax.ActionLink("Say Hi", "ReturnJson", new AjaxOptions() { OnSuccess = "AjaxSuccess" })