ASP.NET browser shows “web page has expired” for back button (after a post back)

Question

I\'m having trouble with a simple ASP.NET application and the back button after a post back.

The page in question has a simple form on it, some text fields etc, and

Answer 1

Depending on a situation you might get away with this hack/workaround:

 private void Page_PreRender(object sender, System.EventArgs e)
    {
        if (IsPostBack && !IsCallback)
        {

            Response.Write("\n");

            Response.End();

        }

    }