Windows mobile login and logout code needed....need urgent for my assignemnt work (Login and Logout authentication)

Question

hi,




  i ma developing windows application...

  need how to do authentication controls for log in and log out..using my sql database..

some one please provide sample authentication code for this log in and log out .

want to check the validations before log in ..

Some one please help me to do login and log out validations for silverlight windows mobile.


It will be helpful if i get some sample code or code for both login and logout validations..


Thank you in advance