Asynchronous Socket programming

Thank you very much for responding to my post.


I have written a code base on some articles and i am able to connect to the server from multiple clients. My client application is a windows form application and server is a console application. After connecting to few clients and try to send the data from the client to server there is a overlap error that is occurring(actually i have my desktop in my office so i am unable to explain about the exact error). And once i try to close any of the clients connected the server console is getting corrupted in a sense an error message is scrolling on the screen which is unreadable.

Server program (Console application)
using System;
using System.Threading;
using System.Net.Sockets;
using System.Text;
using System.Net;
using System.IO;

namespace ConsoleApplication
{
class Program
{
public Socket socketStream;
private BinaryWriter writer;
private BinaryReader rader;



static void Main(string[] args)
{


//IPEndPoint serverSocket = new IPEndPoint(IPAddress.Any, 1215);

Int32 port = 1215;
IPAddress localAddr = IPAddress.Parse("10.14.40.228");
TcpListener serverSocket = new TcpListener(localAddr, port);
TcpClient clientSocket = default(TcpClient);
int counter = 0;

serverSocket.Start();
Console.WriteLine(" >> " + "Server Started");

counter = 0;
while (true)
{
counter += 1;
clientSocket = serverSocket.AcceptTcpClient();
socketStream = new NetworkStream(clientSocket);
Console.WriteLine(" >> " + "Client No:" + Convert.ToString(counter) + " started!");
handleClinet client = new handleClinet();
client.startClient(clientSocket, Convert.ToString(counter));
}

clientSocket.Close();
serverSocket.Stop();
Console.WriteLine(" >> " + "exit");
Console.ReadLine();
}
}

//Class to handle each client request separatly
public class handleClinet
{
TcpClient clientSocket;
string clNo;
public void startClient(TcpClient inClientSocket, string clineNo)
{
this.clientSocket = inClientSocket;
this.clNo = clineNo;
Thread ctThread = new Thread(doChat);
ctThread.Start();
}
private void doChat()
{
int requestCount = 0;
byte[] bytesFrom = new byte[10025];
string dataFromClient = null;
Byte[] sendBytes = null;
string serverResponse = null;
string rCount = null;
requestCount = 0;

while ((true))
{
try
{
requestCount = requestCount + 1;
NetworkStream networkStream = clientSocket.GetStream();
networkStream.Read(bytesFrom, 0, (int)clientSocket.ReceiveBufferSize);
dataFromClient = System.Text.Encoding.ASCII.GetString(bytesFrom);
dataFromClient = dataFromClient.Substring(0, dataFromClient.IndexOf("$"));
Console.WriteLine(" >> " + "From client-" + clNo + dataFromClient);

rCount = Convert.ToString(requestCount);
serverResponse = "Server to clinet(" + clNo + ") " + rCount;
sendBytes = Encoding.ASCII.GetBytes(serverResponse);
networkStream.Write(sendBytes, 0, sendBytes.Length);
networkStream.Flush();
Console.WriteLine(" >> " + serverResponse);

}



catch (Exception ex)
{
Console.WriteLine(" >> " + ex.ToString());
}

finally
{
clientSocket.Close();
serverSocket.Stop();
}


}
}
}
}



Client program(windows form)

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net.Sockets;
namespace june2clnt
{
    public partial class Form1 : Form
    {
        System.Net.Sockets.TcpClient clientSocket = new System.Net.Sockets.TcpClient();
        NetworkStream serverStream;
        public Form1()
        {
            InitializeComponent();
        }

         private void Form1_Load_1(object sender, EventArgs e)
     {
             //msg("Client Started");
            clientSocket.Connect("10.14.40.228", 1215);
            //label1.Text = "Client Socket Program - Server Connected ...";
     }

        private void textBox1_TextChanged(object sender, EventArgs e)
        {
        }
        private void button1_Click_1(object sender, EventArgs e)
        {
            NetworkStream serverStream = clientSocket.GetStream();
            if (serverStream.CanWrite)
            {
                int text = System.Convert.ToInt32(textBox1.Text);
                byte[] outStream = System.Text.Encoding.ASCII.GetBytes(textBox1.Text);
                serverStream.Write(outStream, 0, outStream.Length);
                serverStream.Flush();
            }
            else
            {
                clientSocket.Close();
                serverStream.Close();
                return;
            }
            if (serverStream.CanRead)
            {
                byte[] inStream = new byte[10025];
                serverStream.Read(inStream, 0, (int)clientSocket.ReceiveBufferSize);
                string returndata = System.Text.Encoding.ASCII.GetString(inStream);
                msg("Data from Server : " + returndata);
            }
            else
            {
                clientSocket.Close();
                serverStream.Close();
                return;
            }
        }
     public void msg(string mesg)
        {
            textBox1.Text = textBox1.Text + Environment.NewLine + " >> " + mesg;
        }

    }
}

error when sending data from client
System.ArgumentOutofrangeException: Lenght cannot be less than Zero.
Parameter name: length
at system.String.InternalSubstrigWithChecks<int32 int32="" boolean="" falwayscopy="">
at System.String.Substring<int32 int32="" length="">


Can you help me solve the error !!!