MultiList: .NET Generic List with Multiple Sort Orders

// 
// MultiList library - Copyright 2008 by Michael Moorman / AsAbove.net
// This work is released to the public domain, and may be used for any purpose, without any conditions.
// 
using System;
using System.Collections.Generic;
using System.Text;

namespace Test
{
	public class Person : System.IEquatable<Person>
	{
		public enum Profession
		{
			Teacher,
			Nurse,
			Barber,
			Welder,
			Carpenter,
			Lawyer
		};

		private string _name;
		private int _age;
		private Profession _career;
		private static int _static_sequence = 0;
		private int _sequence;

		public Person (string name, int age, Profession career)
		{
			_name = name;
			_age = age;
			_career = career;
			lock (typeof (Person))
			{	
				_sequence = ++_static_sequence;
			}
		}

		public string Name
		{
			get { return _name; }
		}

		public int Age
		{
			get { return _age; }
		}

		public Profession Career
		{
			get { return _career; }
		}

		public int Sequence
		{
			get { return _sequence; }
		}

		public bool Equals (Person p)
		{
			return Sequence == p.Sequence;
		}

	}
}