RoleStore and Role management in Asp.NET Identity Without Entity Framework - entity-framework

Question

I am writing WCF Services, I authenticate User who will have access to my WCF Services through ASP.NET Identity without Entity Framework. Now I got an issue on Role Authorization. I am using custom way without Entity Framework so for it to achieve authentication I created User class and UserStore Class. And how could I authorize the role?
[Note:I have Role in Database table (ASPNetRoles and ASPNetUserRoles) that can only access WCF Services and I know I have to decorate the method with principalpermission.]
namespace CalculatorService
{
public class IdentityValidator : UserNamePasswordValidator
{
public override void Validate(string UserName, string Password)
{
using (var userManager = new UserManager<User>(new UserStore("data=source=pcb-sql01;initial catalog=InsitePCB;integrated security=True;MultipleActiveResultSets=True")))
{
var user = userManager.Find(UserName, Password);
if (user == null)
{
var msg = string.Format("Unknown Username {0} or incorrect password {1}", UserName, Password);
Trace.TraceWarning(msg);
throw new FaultException(msg);
// //the client actually will receive MessageSecurityException. But if I throw MessageSecurityException, the runtime will give FaultException to client without clear message.
}
}
}
}
public class RoleAuthorizationManager : ServiceAuthorizationManager
{
protected override bool CheckAccessCore(OperationContext operationContext)
{
using (var userStore = new UserStore("data source=pcb-sql01;initial catalog=InsitePCB;integrated security=True;MultipleActiveResultSets=True"))
{
using (var userManager = new UserManager<User>(userStore))
{
var identity = operationContext.ServiceSecurityContext.PrimaryIdentity;
var user = userManager.FindByName(identity.Name);
if (user == null)
{
var msg = string.Format("Unknown Username {0} .", user.UserName);
Trace.TraceWarning(msg);
throw new FaultException(msg);
}
//Assign roles to the Principal property for runtime to match with PrincipalPermissionAttributes decorated on the service operation.
var roleNames = userManager.GetRoles(user.Id).ToArray();//users without any role assigned should then call operations not decorated by PrincipalPermissionAttributes
operationContext.ServiceSecurityContext.AuthorizationContext.Properties["Principal"] = new GenericPrincipal(operationContext.ServiceSecurityContext.PrimaryIdentity, roleNames);
return true;
}
}
}
}
}