TextReadLineIterator.cs

using System;
using System.Collections.Generic;
using System.IO;

namespace fixkeypath
{
    class TextReadLineIterator : IDisposable, IEnumerable<string>
    {
        public TextReadLineIterator(TextReader InputFile)
        {
            this.inputReader = InputFile;
        }

        private TextReader inputReader;

        #region IEnumerable<string> Members

        public IEnumerator<string> GetEnumerator()
        {
            while (true)
            {
                string nextLine = this.inputReader.ReadLine();
                if (null == nextLine) // Null on end of file
                {
                    break;
                }
                yield return nextLine;
            }
        }

        #endregion

        #region IEnumerable Members

        System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
        {
            return GetEnumerator();
        }

        #endregion

        #region IDisposable Members

        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(this);
        }

        ~TextReadLineIterator()
        {
            Dispose(false);
        }

        private void Dispose(bool Disposing)
        {
            if (Disposing)
            {
                if (null != this.inputReader)
                {
                    this.inputReader.Close();
                    this.inputReader = null;
                }
            }
            else
            {
                //Nothing here yet
            }
        }

        #endregion
    }
}