Question

I am having trouble passing my array via a $.post.

The Javascript

var privIDs = [1,2,4,5];
$.post("/Home/GrantPrivilegesToUser", { privilegeIDs: privIDs }, function (data) {
     alert("Data Loaded: " + data.success);
});  

The Action

public ActionResult GrantPrivilegesToUser(int[] privilegeIDs)       
{
    return Json(new {success=true});
}

The action sees privilegeIDs as null. Any ideas?

Answer 1

You need to set jQuery.ajaxSettings.traditional = true; for you jQuery ajax setting. In jQuery 1.4 they changed the way items are serialized in a form post.

please see:

http://forum.jquery.com/topic/nested-param-serialization

And:
How can I post an array of string to ASP.NET MVC Controller without a form?