Role-based Security Authorization in web froms using Identity 2.0

I've seen not hundred but THOUSANDS of example where from scratch  to complete examples with MVC identity 2.0 are done but not a single one with bloody web forms and the one which are present are not even worth while just very basic.  I'm working on an application where I've three roles, user,admin,superUser and all these are in AspNetRoles table because I'm using identity 2.0. now when I create a user I also assign that user one of these roles too. before this role and stuff I've worked on customize roles system as we use to do on desktop applications. so here I tried all the links and articles written on CodeProject about form authentication and all that what we can do in web.config but nothing was helpful Please take a look at this screen shot http://prntscr.com/6ca09i you might get a little idea what I mean by that. ...