Async File Stream : Asynchronous Input Output : File Directory Stream C# Examples

    
using  System;
using  System.Collections.Generic;
using  System.Text;
using  System.Threading;
using  System.IO;

class  Program  {
        static  void  Main(string[]  args)  {
                Console.WriteLine("Main  thread  started.  ThreadID  =  {0}",  Thread.CurrentThread.GetHashCode());
                FileStream  fs  =  new  FileStream("logfile.txt",  FileMode.Append,  FileAccess.Write,  FileShare.None,  4096,  true);
                string  msg  =  "this  is  a  test";
                byte[]  buffer  =  Encoding.ASCII.GetBytes(msg);
                fs.BeginWrite(buffer,  0,  buffer.Length,  new  AsyncCallback(WriteDone),  fs);
        }

        private  static  void  WriteDone(IAsyncResult  ar)  {
                Console.WriteLine("AsyncCallback  method  on  ThreadID  =  {0}",  Thread.CurrentThread.GetHashCode());

                Stream  s  =  (Stream)ar.AsyncState;
                s.EndWrite(ar);
                s.Close();
        }
}