302 found response

Question

I have implemented ajax request to populate my drop down fields. It is working Fine but when I stay idle for some time and select some value in drop down the ajax request ge

Answer 1

In your code you should check whether a session is available, because when a GET/POST request is sent, there may be additional requests for images or other resources. Sessions won’t be available for those requests.

if (Context.Session != null)
{
    // your code
}

Answer 2

The 302 status code indicates that the resource you are requesting has redirected to another resource. If this is behind some authentication, or requiring a session to be active then yes, it would follow that the session timing out is responsible for the ajax resource being called to redirect to possibly a login screen maybe.

I would seriously recommend using something like Charles or Fiddler to track the requests being made.