I am validating the users of my web app against a user database in SQL
Server.  I then store the user object in a session variable and pass it
around to the various forms.  I have a field in the user object called Role
that either holds the value "BusinessAgent" or "Administrator".  The role
type determines what forms the user can access and certain privileges in
forms.  I have menus on a master page but I don't want to hide menu items
depending on the role type.  I would like to in the page load of each form,
look at the role type and determine whether they have permission to the form
otherwise alert them to the fact that the form is for administrators only.
What is the best way to do this?

Bill