Why doesn't Request.IsAjaxRequest() work in ASP.NET MVC 3?

Question

I\'m creating a new project, asp.net mvc3 with Razor, and wanting to turn the LogOn into an ajax request.

HTML

@using (Ajax.BeginForm(\"LogOn\", \"Ac         


        

Answer 1

That's because by default ASP.NET MVC 3 uses jQuery and unobtrusive AJAX instead of the MicrosoftAjax* library. This means that when you write Ajax.BeginForm you will need to include the proper scripts inside your page:

<script src="@Url.Content("~/Scripts/jquery.unobtrusive-ajax.js")" type="text/javascript"></script>

and in your web.config make sure that you have unobtrusive javascript enabled:

<add key="UnobtrusiveJavaScriptEnabled" value="true"/> 

Now you can safely throw away all MicrosoftAjax* script references on your page if you had any, they are no longer used.

This being said personally I never used any of the Ajax.* helpers. I always prefer to have control. So I would write:

@using (Html.BeginForm("LogOn", "Account"))
{
}

and then AJAXify this form using the jquery form plugin:

$(function() {
    $('form').ajaxForm(function(result) {
        alert('form successfully submitted');
    });
});