tcp socket server application

Guys,

I am trying to create a GUI socket server.

The goal is simple.

1.Open a port
2.keep sending data to the port
3.the data is given from a textbox in the gui and must be sent after the button is pressed.
4.Do NOT CLOSE THE CONNECTION to the port until a button is pressed in the GUI.

I have done some part of it but the problem i m facing with my code is i am not able to split the accept client connection part from the send data to client part.

Hence each time i click my button to send the data i have to close the connection and open a new connection again. Please help me with this. The code below executes on button press. As you can see each time i have to close the socket and redo everything on each button press. I am not able to split it into parts. Please help me.


Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

IPEndPoint ip = new IPEndPoint(IPAddress.Any, 9999);

socket.Bind(ip);
socket.Listen(10);
Console.WriteLine("Waiting for a client...");

Socket client = socket.Accept();
IPEndPoint clientep = (IPEndPoint)client.RemoteEndPoint;
cliStatusLbl.Text = "Connected with Client";


string sndCmd = "|" + this.keyTxt + "|" + this.valTxt + "\n";

byte[] data = new byte[1024];
data = Encoding.ASCII.GetBytes(sndCmd);

client.Send(data, data.Length, SocketFlags.None);
Thread.Sleep(2000);

client.Close();
socket.Close();