MembershipUser inside partial class

[Pawel]

Hey, is there possibility to create MembershipUser class inside partial class of model ?

public partial class User

    {

        [Transient]

        public MembershipUser _user = Membership.GetUser();

 

        public User()

        {

        }
           public Guid GetGUID()
        {            
            return (Guid)_user.ProviderUserKey;
        }


    }

Because I got at bold line this error

"Object reference not set to an instance of an object."

[Pawel]

Ok problem solve, I just forget that my session was end...and I wasn't on my account.