C#

private void button1_Click(object sender, EventArgs e)
        {
            for (int i = 0; i < 4; i++)
            {
                Thread thread = new Thread(new ParameterizedThreadStart(round));
                thread.Start();
                thread.Join();
                Thread.Sleep(100);
            }
        }
 private void round(object val)
        {
            System.Net.IPAddress myIP;
            System.Net.IPEndPoint  myServer;
            Socket socket;
            string ip = (string)val; 

            try
            {
                myIP = System.Net.IPAddress.Parse(ip);
                myServer = new System.Net.IPEndPoint(myIP, Int32.Parse("20000"));
                socket=new Socket(AddressFamily.InterNetwork,SocketType.Stream ,ProtocolType.Tcp);
                socket.Connect(myServer);
                NetworkStream netStream=new NetworkStream(socket);
                Byte[] byteMessage=new Byte[640];
                string sendMessage="hello server";
                byteMessage=System.Text.Encoding.Default.GetBytes( sendMessage.ToCharArray());
                netStream.Write(byteMessage,0,byteMessage.Length);
                netStream.Flush();
                netStream.Close();
                socket.Close();
            }
            catch (Exception ee)
            {
                MessageBox.Show(ee.Message);
            }
        }

g.SmoothingMode = SmoothingMode.AntiAlias;
g.TextRenderingHint = TextRenderingHint.AntiAlias;
g.InterpolationMode = InterpolationMode.HighQualityBilinear;

g.TextRenderingHint = TextRenderingHint.AntiAlias;

abbd wrote:

I would get all line where the lastname and lastname was the same, i will get two elements for exemple in arraylist :

CelestialCoder wrote:

I think I need a book to learn about the basics of windows programming.

IEnumerable<int> GetNumbers()
{
    for (int i = 0; i < 100; i++)
        yield return i;
}

foreach (int number in GetNumbers())
    Console.WriteLine(number);