title: using Windows integrated authentication with SqlRoleProvider in silverlight application
body: <p>I am working on web application that requires that users are put into roles and are given different permissions based on their roles. This can be easily done by using Forms Authentication and SqlRoleProvider. But, application will be used internally within corporate intranet, and forms authentication forces users to manually login every time they want to use application, Using Windows integrated autenthification looks much more elegant, since users are already logged on corporate domain. But there is a problem with roles here, integrated authentication by default uses roles that are built in users windows accounts (group membership and so on..). My application requires that i put users into custom made roles. So as far as roles are concerned having database i control is much more favorable solution. 
  Is there a way to use Windows integrated authentification (for authentification) together with SqlRoleProvider (for roles and user management)?</p>