asp.net mvc 3 - Ajax.BeginForm check if request was redirected -

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how determine if async request form ajax form redirected? in case request redirected login page if user's session closed.

i tried check arguments of oncomplete, onsuccess , onbegin events (onfailure not called) no 1 helped.

currently have entire login page embaded in div of current page in case of session closing.

the way see how awoid - code this:

function onsuccesspost(a,b,c) {    if (a.indexof("<!doctype html>") == 0) {       window.location = window.location;    }    // ... }

but solution seems bit ugly.

any ideas?

don't redirect controller actions invoked through ajax. use json:

public actionresult foo() {     var url = url.action("bar", "baz");     return json(new { location = url }, jsonrequestbehavior.allowget); }

and in ajax success callback:

success: function(result) {     window.location.href = result.location; }

obviously if intend redirect client side after ajax request, kills benefit ajax. invoke controller action using standard link => it's meaningless use ajax in case.

update:

it seems trying intercept redirect logon page when forms authentication cookie has expired. phil haack blogged this: http://haacked.com/archive/2011/10/04/prevent-forms-authentication-login-page-redirect-when-you-donrsquot-want.aspx

in article illustrates how prevent forms authentication module automatically redirect logon page instead send 401 status code intercepted ajax request , perform redirect on client.


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