Security

Hi,

I have web site, and based on login i am showing some links to other pages. after login user can directly enter the URL of the page and can access the page (I want to avoid this senario).

So i want to check on every page load, whether the user is authenticated or No, to achieve this i have to call a method on every page load, this is ok if i have one or two pages, but i have more then 50 pages in my web site,

So can anybody tell me that how to achive authorization in this senario?

 Regrds

Sharan
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