Lazy-loading ghost example

gistfile1.cs

    public class User
    {
        private int _id;
        private bool _loaded = false;

        private string _firstName;
        private string _lastName;

        public User(int id)
        {
            _id = id;
        }

        private void InitializeIfNecessary()
        {
            if (!_loaded)
            {
                var user = db.Users.SingleOrDefault(u => u.UserId = _id);

                _firstName = user.FirstName;
                _lastName = user.LastName;

                _loaded = true;
            }
        }

        public string FirstName
        {
            get
            {
                this.InitializeIfNecessary();

                return _firstName;
            }
        }

        public string LastName
        {
            get
            {
                this.InitializeIfNecessary();

                return _lastName;
            }
        }
    }