File Directory Stream C# Tutorial

using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.IO;
using System.IO.Compression;
using System.Net;
using System.Net.Mail;
using System.Net.Sockets;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
public class MainClass
{
    public static void Main()
    {
        Stream s = new FileStream("c:\\test.txt", FileMode.Open);
        using (StreamReader sr = new StreamReader(s, Encoding.UTF8))
        {
            string line;
            while ((line = sr.ReadLine()) != null)
            {
                Console.WriteLine(line);
            }
        }
    }
}