title: make use of User.Identity.Name when user first hits the site
body: <p>I want to run some code that makes use of User.Identity.Name, </p>
  
  <p>I want to run that code when the user first enters the site.
  (can be everytime they close the browser then reopen the site)</p>
  
  <p>i tried putting it in Application_Start in the global.asax, but the User.Identity.Name name was returning null;</p>
  
  <p>How can I achieve this?</p>