C#

private void WebBrowser1_ProgressChanged(object sender, WebBrowserProgressChangedEventArgs e)
       {
           this.cboSP_Site.Focus();
       }

private void webBrowser1_ProgressChanged(object sender, WebBrowserProgressChangedEventArgs e) {
    if (e.CurrentProgress == e.MaximumProgress) {
        textBox1.Focus();
    }
}

Proto  Local Address           Foreign Address        State
TCP    workstation:1161        localhost:2323         ESTABLISHED
TCP    workstation:1162        localhost:2323         ESTABLISHED
TCP    workstation:1163        localhost:2323         ESTABLISHED
TCP    workstation:2323        localhost:1161         ESTABLISHED
TCP    workstation:2323        localhost:1162         ESTABLISHED
TCP    workstation:2323        localhost:1163         ESTABLISHED

[STAThread]
public static void Main(string[] Args) {
  TcpListener listener = null;
  try {
    listener = new TcpListener(IPAddress.Loopback, 2323);
    listener.Start();
    int connection_count = 0;
    while(connection_count<10) {
      if(listener.Pending()) {
        TcpClient connection = listener.AcceptTcpClient();
        ThreadPool.QueueUserWorkItem(new WaitCallback(Communicate), connection);
        Console.WriteLine("Connection Accepted ({0})", connection_count++);
      }
      Thread.Sleep(1);
    }
    Console.WriteLine("Waiting 30 seconds for last connection to close.");
    Thread.Sleep(30005);
    Console.WriteLine("Shutting Down.");
  } finally {
    if(listener!=null) {
      listener.Stop();
    }
  }
}

private static void Communicate(object Connection) {
  if(Connection==null) return;
  TcpClient client = (TcpClient)Connection;
  StreamWriter writer = null;
  try {
    if(client.Connected) {
      writer = new StreamWriter(client.GetStream());
      writer.WriteLine("Connected.  You will be disconnected in 30 seconds.");
      writer.Flush();
      Thread.Sleep(30000);
      writer.WriteLine("Bye!");
      writer.Flush();
    }
  } catch {
    if(writer!=null) {
      writer.WriteLine("Connection error.");
      writer.Flush();
    }
  } finally {
    Console.WriteLine("Closing Client.");
    if(client.Connected) {
      client.Close();
    }
  }
}