title: Automatic login process in Windows Phone 7.1 application
body: <p>In my Windows Phone application(<strong>silverlight application</strong>), I want the user to automatically get logged-in to the application once he logs in successfully. I.e I don't want the user to login everytime.   </p>
  
  <p>I achieved this through a <strong>Isolated Storage file</strong> concept. I.e First I created 
  a directory and I created an <strong>isolated storage file stream</strong> and stored the email and password credentials in some file.<br>
  When I stopped debugging and start it back, my stream reader reads the email-password credentials from that file <strong>successfully.</strong>  </p>
  
  <p>My problem is <strong>when I close my emulator</strong> and open it back I could not read from that file.(particularly, the directory itself does not exist!).I also want to know my Isolated storage persists in real windows phone?  </p>
  
  <p>How could I fix this?</p>