C#, FileStream, odczytywanie z pliku

 using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading.Tasks;

namespace Do_testu
{
    class Program
    {
        static void Main(string[] args)
        {
            FileStream fs = new FileStream("C:\\Users\\Mikołaj Waśniewski\\Desktop\\Do testu\\plik.txt",FileMode.Open);
            byte[] buffer = new byte[500];
            fs.BeginRead(buffer, 0, 32, new AsyncCallback(CompleteReading),fs);
            string text = Encoding.ASCII.GetString(buffer);
            Console.WriteLine(text);
            Console.ReadKey();
        }

        private static void CompleteReading(IAsyncResult ar)
        {
            Console.WriteLine("Reading complete");
        }
    }
}

FileStream fs = new FileStream("C:\\Users\\Mikołaj Waśniewski\\Desktop\\Do testu",FileMode.Open);