using System;

using NUlid;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

         IEnumerable<Employee> empEnum = new Employee[]

        {

            new Employee

            {

                FirstName = "Nigel",

                LastName = "Oliveros",

                ID = Ulid.NewUlid()

            },

              new Employee

            {

                FirstName = "Nigel",

                LastName = "Oliveros",

                ID = Ulid.NewUlid()

            },

              new Employee

            {

                FirstName = "Nigel",

                LastName = "Oliveros",

                ID = Ulid.NewUlid()

            },

              new Employee

            {

                FirstName = "Nigel",

                LastName = "Oliveros",

                ID = Ulid.NewUlid()

            },

              new Employee

            {

                FirstName = "Nigel",

                LastName = "Oliveros",

                ID = Ulid.NewUlid()

            },

              new Employee

            {

                FirstName = "Nigel",

                LastName = "Oliveros",

                ID = Ulid.NewUlid()

            }

        };

        foreach(Employee emp in empEnum)

            Console.WriteLine($" {emp.FirstName} \t {emp.LastName} \n ID: {emp.ID} \n GUID: {emp.GUID}");

    }

}

public class Employee {

 public string FirstName {get;set;}

 public string LastName {get;set;}

 public Ulid ID {get;set;}

 public Guid? GUID {get{ return GetGuid();}}

    private Guid GetGuid() { return Guid.NewGuid();}

​

}