Before the update of the dll\'s in the Entity Framework i was able to do this
user.Roles.Where(r => r.Role.Name == \"Admin\").FisrtOrDefault(); >
user.Roles.Where(r => r.Role.Name == \"Admin\").FisrtOrDefault();
Ask the RoleMananger?
RoleManager.Roles. // or RoleManager.FindByIdAsync() // or RoleManager.FindByNameAsync()
You may want to take some time and learn the new security features in Asp.Net Security and Asp.Net Identity.