using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApplication2
{
	class Program
	{
		public class test : IEnumerable
		{
			public ArrayList tests = new ArrayList();

			public test()
			{
			}

			public IEnumerator GetEnumerator()
			{
				return new CustomEnum(tests);
			}
		}
		public class CustomEnum : IEnumerator
		{
			private ArrayList _List;
			private	int _position = -1;

			public CustomEnum(ArrayList list)
			{
				this._List = list;
			}

			public bool MoveNext()
			{
				return (++this._position < this._List.Count);
			}

			public void Reset()
			{
				this._position = -1;
			}

			public object Current
			{
				get
				{
					try
					{
						return this._List[this._position];
					}
					catch (IndexOutOfRangeException)
					{
						throw new InvalidOperationException();
					}
				}
			}
		}

		static void Main(string[] args)
		{
			test tt = new test();

			tt.tests.Add("one");
			tt.tests.Add("two");
			tt.tests.Add("three");

			foreach (object Obj in tt)
				Console.WriteLine((string)Obj);

			Console.ReadLine();
		}
	}
}