C#

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        System.Timers.Timer greentimer;
        System.Timers.Timer redtimer;

        public Form1()
        {
            InitializeComponent();
            greentimer = System.Timers.Timer(3000);
            greentimer.Elapsed += new System.Timers.ElapsedEventHandler(greenTimer_Elapsed);
            greentimer.Start();

            redtimer = System.Timers.Timer(3000);
           redtimer.Elapsed += new System.Timers.ElapsedEventHandler(redTimer_Elapsed);
            redtimer.Start();

        }
        void redTimer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
        {
             button1.Invoke(new Action(() => button1.BackColor=Color.Green));

        }
        private void button1_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }

        [STAThread]
        static void Main()
        {
            
            Application.Run( Form1);
        }
    }
}

greentimer = new System.Timers.Timer(3000);
...
redtimer = new System.Timers.Timer(3000);

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        System.Timers.Timer greentimer;
        System.Timers.Timer redtimer;

        public Form1()
        {
            InitializeComponent();
            greentimer = System.Timers.Timer(3000);
            greentimer.Elapsed += new System.Timers.ElapsedEventHandler(greenTimer_Elapsed);
            greentimer.Start();

            redtimer = System.Timers.Timer(3000);
           redtimer.Elapsed += new System.Timers.ElapsedEventHandler(redTimer_Elapsed);
            redtimer.Start();

        }
        void redTimer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
        {
             button1.Invoke(new Action(() => button1.BackColor=Color.Green));

        }
        private void button1_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }

        
    }
}

Error	1	Invalid expression term ')'	C:\Documents and Settings\XPPRESP3\My Documents\Visual Studio 2005\Projects\WindowsApplication2\WindowsApplication2\Form1.cs	30	41	WindowsApplication2

Error	1

Invalid expression term ')'	

C:\Documents and Settings\XPPRESP3\My Documents\Visual Studio 2005\Projects\WindowsApplication2\WindowsApplication2\Form1.cs	

30	

41	

WindowsApplication2

button1.Invoke(new Action(() => button1.BackColor=Color.Green));

button1.Invoke(new Action(() => button1.BackColor=Color.Green));
                           ^
                           |

button1.BackColor=Color.Green;

Luc Pattyn wrote:

PS: I would hate an app that does all that!

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data;
using System.Data.OleDb;


static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>      
        
        private static bool listening = false;
        private static TcpListener myList;

        [STAThread]
        static void Main()
        {         
            try
            {
                Application.EnableVisualStyles();
                Application.SetCompatibleTextRenderingDefault(false);
                Application.Run(new ConnectionForm());

                IPAddress ipAd = IPAddress.Parse("localhost");
                // use local m/c IP address, and 

                // use the same in the client


                /* Initializes the Listener */
                myList = new TcpListener(ipAd, 8001);
                listening = true;

                /* Start Listeneting at the specified port */
            }
            catch (Exception e)
            {
                Console.WriteLine("Error..... " + e.StackTrace);
            }

            while (listening)
            {
                try
                {
                    Console.WriteLine("The server is running at port 8001...");
                    Console.WriteLine("The local End point is  :" +
                                      myList.LocalEndpoint);
                    Console.WriteLine("Waiting for a connection.....");

                    Socket clientSocket = myList.AcceptSocket();
                    Console.WriteLine("Connection accepted from " + clientSocket.RemoteEndPoint);


                    new Client_sThresds(clientSocket);
                    myList.Start();
                }
                catch (Exception e)
                {
                    Console.WriteLine("Error..... " + e.StackTrace);

                    /* clean up */
                    //clientSocket.Close();
                    myList.Stop();
                }
            }
        }
    }

using System;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Text;

         private static TcpListener myList;
/pre>

That is not possible.

Either the usings you posted are incorrect or you have edited your code, not pasted it directly.
<div class="signature">Henry Minute

Do not read medical books! You could die of a misprint. - Mark Twain
Girl: (staring) "Why do you need an icy cucumber?"
"I want to report a fraud. The government is lying to us all."
I wouldn't let CG touch my Abacus!
When you're wrestling a gorilla, you don't stop when you're tired, you stop when the gorilla is.</div>

using System;
using System.Windows.Forms;
using System.Net.Sockets;
using System.Net;

new Client_sThresds(clientSocket);