C#

for (int i = 0; i < textfieldNo; i++)
        {
             
            TextBox tb = new TextBox();
            tb.ID = "txtChoice" + s;        
            Form.Controls.Add(tb);
            s++;
        }

;
Socket socket;
IPEndPoint hostEndPoint;
string packet;
 
public void run()
{
  TCPConnect();

  packet = SendReceive("/signin.aspx", "GET");
  if (GetReturnCode(packet) == "400")
    TCPReset();

  packet = SendReceive("/index.html", "GET");

  TCPClose();  
}
 
private void TCPConnect()
{
  // Make sure there is a connection
  if (socket == null)
  {
    socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
    hostEndPoint = new IPEndPoint(ipaddr, port);
  }

  socket.Connect(hostEndPoint);
}
 
// My problem is getting this function working properly
private void TCPReset()
{
  socket.Disconnect(true); // Close the socket connection and allow reuse of the socket
  socket.Connect(hostEndPoint); // This is ignored according to Ethereal,
                                // nothing is sent even using socket.Send()
}
 
private void TCPClose()
{
  socket.Shutdown(SocketShutdown.Both);
  socket.Close();
}
 
private string SendReceive(string strURI, strMethod)
{
  string pcAppend = " HTTP/1.1\r\nConnection: Keep-Alive\r\n\Content-Length: 0\r\n" +
      "User-Agent: Mozilla/4.0 (Compatible; MSIE 7.0; Windows NT 5.2; .NET CLR " +
      "2.0.50727; .NET CLR 3.0.04506.30; InfoPath.1; .NET CLR 3.5.21022)\r\n" +
      "Content-Type: application/x-www-form-urlencoded\r\nHost: " + strIPAddress + "\r\n\r\n";
  byte[] pcSend = System.Text.ASCIIEncoding.ASCII.GetBytes(strMethod + strURI + pcAppend);
  byte[] bfBuffer = new byte[10240];

  socket.Send(pcSend, pcSend.Length, 0);
  socket.Receive(bfBuffer, bfBuffer.Length, SocketFlags.None);

  return System.Text.ASCIIEncoding.ASCII.GetString(bfBuffer);
}

public class PictureBoxEx : ScrollableControl
    {
        private Image _image;
        private Single _zoom;
        private InterpolationMode _interpolationMode;
        private Point lastPos;        

        #region Properties

        [Category("Appearance"), Description("The image to be displayed.")]
        public Image Image
        {
            get { return _image; }
            set 
            { 
                _image = value;
                this.UpdateScaleFactor();
                this.Invalidate();
            }
        }

        [Category("Appearance"), Description("The zoom factor. Less than 1 to reduce. More than 1 to magnify.")]
        public Single Zoom
        {
            get { return _zoom; }
            set
            {
                _zoom = value;
                this.UpdateScaleFactor();
                this.Invalidate();
            }
        }

        [Category("Appearance"), Description("The interpolation mode used to smooth the drawing.")]
        public InterpolationMode InterpolationMode
        {
            get { return _interpolationMode; }
            set { _interpolationMode = value; }
        }

        public Point LastPosition
        {
            get { return lastPos; }
            set { lastPos = value; }
        }

        #endregion

        public PictureBoxEx()
        {
            this.SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint | ControlStyles.ResizeRedraw | ControlStyles.UserPaint | ControlStyles.OptimizedDoubleBuffer, true);
            this.AutoScroll = true;
            this.Zoom = 1f;
        }

        private void UpdateScaleFactor()
        {
            if (this.Image == null)
                this.AutoScrollMargin = this.Size;
            else
                this.AutoScrollMinSize = new Size(Convert.ToInt32(this.Image.Width * this.Zoom + .5f), Convert.ToInt32(this.Image.Height * this.Zoom + .5f));
        }

        protected override void OnPaintBackground(PaintEventArgs e)
        {
            // Do nothing
        }

        protected override void OnPaint(PaintEventArgs e)
        {
            if (this.Image == null)
            {
                this.OnPaintBackground(e);
                return;
            }
            Matrix mx = new Matrix(this.Zoom, 0, 0, this.Zoom, 0, 0);
            mx.Translate(this.AutoScrollPosition.X / this.Zoom, this.AutoScrollPosition.Y / this.Zoom);
            e.Graphics.Transform = mx;
            e.Graphics.InterpolationMode = this.InterpolationMode;
            e.Graphics.DrawImage(this.Image, new Rectangle(0, 0, this.Image.Width, this.Image.Height), 0, 0, this.Image.Width, this.Image.Height, GraphicsUnit.Pixel);
            base.OnPaint(e);
        }        
    }