Custom authorization in wpf

hi

how to use  Authorization  And Permission For every Window or UserControl in wpf

The sample code in this Project uses the MVVM design pattern and the solution consists of a simple window with basic login and logout functionality and some buttons to display windows protected with the PrincipalPermissionAttribute, a simple authentication service class to authenticate users based on a supplied username and a password, the actual implementation of the interfaces and some additional helper classes and interfaces

This Link is My Project , But Not Work:

https://skydrive.live.com/redir?resid=D4C6FB0AAD8DC37E!122&authkey=!AOASbgwblhEdNZk

my Project Created according this Link:

http://blog.magnusmontin.net/2013/03/24/custom-authorization-in-wpf/

thanks for All