write to a nwtwork stream

private void button2_Click(object sender, EventArgs e)
{
    string[] files= null;
    string appPath = Path.GetDirectoryName(Application.ExecutablePath);
    //folderBrowserDialog1.RootFolder = Environment.SpecialFolder.Desktop;
    folderBrowserDialog1.SelectedPath = @"C:\MyMusic\";
    DialogResult result = folderBrowserDialog1.ShowDialog();
    if (result == DialogResult.OK)
    {
        files = Directory.GetFiles(folderBrowserDialog1.SelectedPath, "*.mp3");
        songFolderTxtbox.Text = folderBrowserDialog1.SelectedPath;
    }
    IPEndPoint serverEndPoint = new IPEndPoint(IPAddress.Parse(s), 81);
    TcpClient client = new TcpClient();
    client.Connect(serverEndPoint);
    NetworkStream targetStream = client.GetStream();
    InitializeTheConnection(targetStream, "password", null);

    if (files != null)
    {
        foreach (string filename in files)
        {
            using (Stream ms = new MemoryStream())
            {
                using (Stream stream = new FileStream(filename,FileMode.Open))
                {
                    byte[] buffer = new byte[65536];
                    int read;
                    while ((read = stream.Read(buffer, 0, buffer.Length)) > 0)
                    {
                        System.Threading.Thread.Sleep(1000);
                        //ms.Write(buffer, 0, read);
                        targetStream.Write(buffer, 0, read);
                    }

                }
                while (ms.Length < 65536 * 10)
                    System.Threading.Thread.Sleep(1000);
                targetStream.Flush();
                ms.Position = 0;
            }
        }
    }
}