TcpClient client = new TcpClient();
							client.Connect(IPAddress.Parse(this._clientdata[i-1].ToString()), 7777 );
							NetworkStream stream = client.GetStream();
							StreamReader reader = new StreamReader(this.openFileDialog1.FileName,Encoding.ASCII);
							StreamWriter writer = new StreamWriter(stream);
							writer.Write(reader.ReadToEnd());
							writer.Flush();
							writer.Close();
							reader.Close();
							client.Close();

TcpListener listener = new TcpListener(7777);
			listener.Start();
			Socket socket = listener.AcceptSocket();
			NetworkStream stream = new NetworkStream (socket, FileAccess.ReadWrite,false );
			StreamReader reader = new StreamReader(stream,Encoding.ASCII);
			StreamWriter writer = new StreamWriter(this.saveFileDialog1.FileName);
			writer.Write(reader.ReadToEnd());
			writer.Flush();
			writer.Close();
			reader.Close();
			listener.Stop();

byte[] buf = new byte[1024];

while(reader.Peek() != -1)
{
    reader.Read(buf, 0, 1024);    
    stream.Write(buf, 0, 1024);
}

NetworkStream stream = client.GetStream();
			Stream reader = File.OpenRead(this.openFileDialog1.FileName);
			byte[] buf = new byte[reader.Length];
			reader.Read(buf, 0, buf.Length);    
			stream.Write(buf, 0, buf.Length); 

using(NetworkStream ns=client.GetStream())
			{
				using (FileStream fs=File.OpenRead("test.txt"))
				{
					byte[] bytes=new byte[fs.Length];
					fs.Read(bytes,0,bytes.Length);
					ns.Write(bytes,0,bytes.Length);
				}
			}

NetworkStream stream = new NetworkStream (socket, FileAccess.ReadWrite,false);
			StreamWriter reader = new StreamWriter(this.saveFileDialog1.FileName,false,Encoding.Default);
			byte[] buf = new byte[stream.Length];
			stream.Read(buf,0,buf.Length);
			reader.Write(Encoding.Default.GetChars(buf)); 
			reader.Close();

TcpClient client = new TcpClient();
			client.Connect(ip, 7777 );
			NetworkStream stream = client.GetStream();
			Stream reader = File.OpenRead(this.openFileDialog1.FileName);
			byte[] buf = new byte[reader.Length];
			reader.Read(buf, 0, buf.Length);    
			stream.Write(buf, 0, buf.Length); 
			stream.Close();
			reader.Close();
			client.Close();