Forms Issue Cross-Domain Posting to MVC Controller using JQuery

Question

I have a very strange issue on my hands.

• I have two IIS websites using host headers.

I have some simple code using JQuery and JQuery.forms to post a simple form to a controller. The controller returns JSON. It works great as long as the client code is present on the web site that has the controller code.

The moment I move the form over to the second IIS website and try to post to the first website where the controller is present it stops working.

Does anyone know why this might be happening? Is there some cross-domain setting I am not aware of?

Thanks

Answer 1

Yes there is indeed a cross domain issue. You will need to return JSONP rather than JSON. I actually blogged about this once http://stimms.blogspot.com/2009/04/aspnet-mvc-returning-jsonp.html.