How can I send digital or binary data in a client project / server in C #

tried a client single server in C # using Microsoft Visual Studio 2012 and it worked but sent data are phrases like "Message sent" I am trying to send binary data numbers for my project because I work with the spyder card that plays the role of client and the pC that acts as serveur.La spyder card is sent to the pC binary messages as RFID data or fingerprint data .It is therefore necessary to define this message size . I really need aide.Merci for the person who will help me in my project.

Yes exactly send donneées binary instead of text I 'm stuck in some of my code and I can not send numbers to the server

I want you to do a client server by sending digital data code in my project because there must be a spyder card for data sending to my pc so I had to create a client server

It just so you can send numbers instead of characters in a client server project

non il n'y'a cela dans mon code je vais vous envoyer mon code

TCP SERVER

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Threading;
using System.Net;
using System.Net.Sockets;
using System.IO;

namespace TCPserver
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e)
{

}

private void button1_Click(object sender, EventArgs e)
{

Thread tcpServerRunThread = new Thread(new ThreadStart(TcpServerRun));
tcpServerRunThread.Start();

}

private void TcpServerRun()
{
TcpListener tcpListener = new TcpListener(IPAddress.Any, 5004);
tcpListener.Start();
updateUI("Listening");
while (true)
{
TcpClient client = tcpListener.AcceptTcpClient();
updateUI("Connected");
NetworkStream stream = client.GetStream();
stream.Read(x, 0, x.Length);
//updateUI("New Message = " + Encoding.ASCII.GetString(message));
UInt32 u = (UInt32)(x[0] << 24) | (UInt32)(x[1] << 16) | (UInt32)(x[2] << 8) | (UInt32)x[3];
updateUI("u = " + u.ToString("X"));
stream.Close();
client.Close();
}

}

/*
private void TcpServerRun()
{
TcpListener tcpListener = new TcpListener(IPAddress.Any,5004);
tcpListener.Start();
updateUI("Listening");
while(true)
{
TcpClient client = tcpListener.AcceptTcpClient();
updateUI("Connected");
Thread tcpHandlerThread = new Thread(new ParameterizedThreadStart(tcpHandler));
tcpHandlerThread.Start(client);
}

}
private void tcpHandler (object client)
{
TcpClient mClient = (TcpClient)client;
NetworkStream stream = mClient.GetStream();
byte[] message = new byte[1024];
stream.Read(message, 0,message.Length);
updateUI("New Message = " + Encoding .ASCII.GetString(message));
stream.Close();
mClient.Close();

}
*/

private void updateUI(string s)
{
Func<int> del = delegate()
{
textBox1.AppendText(s + System.Environment.NewLine);
return 0;

};
Invoke(del);
}


}
}



TEST CLIENT TCP
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Net.Sockets;
using System.Net;
using System.IO;
using System.Threading;



namespace TestClientTCP
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e)
{

}

private void textBox1_TextChanged(object sender, EventArgs e)
{

}

private void button1_Click(object sender, EventArgs e)
{
Thread mThread = new Thread(new ThreadStart(ConnectAsClient));
mThread.Start();
}

private void ConnectAsClient()
{
TcpClient client = new TcpClient();
client.Connect(IPAddress.Parse("192.168.230.1"), 5004);
updateUI("Connected");
NetworkStream stream = client.GetStream();

string s = "Hello from client";
//UInt32 u = 0x41424344;
//

you would not simply a code in C # ?