Question

I’ve just started out trying MVC 2 and Ajax, and I’m wondering if I’m doing something wrong, because I was under the impression that Ajax would make changes in a webpage very fast. The example I have is with the Ajax actionlink:

<div>
  <%: Ajax.ActionLink("Dita", "AjaxView", new AjaxOptions { UpdateTargetId = "myDiv" })%>
</div>
<div id="myDiv">
    Change this text</div>

And the Action method:

public ActionResult AjaxView(string id)
{
     return Content("Text changed!"); ;

}

This is a rather short simple text string, and still it takes about 1-2 seconds before the text shows up. Maybe ajax isn’t supposed to do what I thought it would, but I was thinking I could use it for instant previews of text and images sort of like a rollover function (by the way I was wondering if the actionlink can be set to invoke the action method on mouseover rather than click?)

Is it normal that it is this slow or am I missing something?

Answer 1

It might be an IPv6 DNS resolution issue with FF and Chrome when working with localhost. Fixes described here:

Firefox and Chrome slow on localhost; known fix doesn't work on Windows 7

and here

https://superuser.com/questions/174715/is-there-a-way-to-disable-ipv6-in-googles-chrome

I would try in IE and Opera first to check if it works faster.

Note: if that’s actually the problem, this has nothing to do with AJAX.