If the current user is not the specified user, sets the HTTP status to 401 (Unauthorized).
This member is overloaded. For complete information about this member, including syntax, usage, and examples, click a name in the overload list.
This method will let only the specified user access the web page. The recommended way to restrict access to a web page is to create a role, and use the RequireRoles(String) method to verify that the current user is a member of that role.