ASP.NET - Checking if request is authenticated in master page

Question

In my master page's Page_Load event, I have the following code:

if(!Request.IsAuthenticated)
{
   FormsAuthentication.RedirectToLoginPage();
} else 
{
   // Do something. Note: Any work here gets performed when request is authenticated.
}

However, when I load a content page (which uses the master) while not authenticated, I do not get redirected to the login page. To get the desired behavior, I also need to add the above check in the Page_Load event in my content page.

Not a huge issue but is just annoying having the above check in every content page.

So I am curious, what is the reason for the master page not redirecting to login page when request isn't authenticated?

Answer 1

If all you want is FormsAuthentication to redirect to login page, when user has not logged in why don't you use config file to do this?

<system.web>
  <authorization>
    <deny users="?" />
  </authorization>
</system.web>

This should automatically send all 'anonymous' users to the configured login page for FormAuth.