Reloading page when user arrives from back button

Question

I have a generic error page, that any handled error will redirect to. I have an admin page that when the user invokes an error, and the user is brought to the error page, hitting the back button from the error page cause the admin page to load improperly.

So what I need, is a way to reload the admin page when I come from the error page. I have tried setting no cache and such on the admin page, and checking for a postback, but nothing works. Setting no cache seems to do nothing, and any javascript on the admin page's document.ready function does not get called either. Is there any other ways to get this to happen?

EDIT:

I should also mention that I have noticed that a table is missing 2 cells I recently added. This makes me believe that there is a old state of the page being cached somewhere, although clearing the browser cache and restarting my server do not help at all.

Edit2:

Also, setting window.onload() gets nuked when I come back to the admin page

Answer 1

You should be able to take care of that by overriding OnInit with this code:

public class ProductBrowser : Page
{
    protected override void OnInit(EventArgs e)
    {
        Response.Cache.SetCacheability(HttpCacheability.NoCache);
        Response.Cache.SetNoStore();
        Response.Cache.SetExpires(DateTime.MinValue);

        //EDIT: Set the value to FALSE
        Response.Cache.SetAllowResponseInBrowserHistory(false);

        base.OnInit(e);
    }
}

See this question for more details: Back button refresh page

EDIT

For clearing the cache, check this out:
Manually clear ASP.NET server cache for a single application/web site?