Transfer large size of image file using udp

Question

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Threading;
using System.Runtime.Serialization.Formatters.Binary;
namespace WindowsPicSend_Test
{
public partial class Form1 : Form
{
UdpClient send, receive;
IPEndPoint sendpt, receivept;

public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
//OpenFileDialog mydialog = new OpenFileDialog();
//if (mydialog.ShowDialog() == DialogResult.OK)
//{
//string path = mydialog.FileName;
string path = "c:\\3.jpg";
FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read);
BinaryReader br = new BinaryReader(fs);
byte[] data = br.ReadBytes(Convert.ToInt16(fs.Length));
send = new UdpClient();
sendpt = new IPEndPoint(IPAddress.Parse("192.168.1.4"), 3333);
send.Send(data, data.Length, sendpt);
send.Close();
//}
}
That is my code It is able to send the images up to 50kb but if image size is greaterthan 50kb it is giving error
The error is: Value was either too large or too small for an Int16(over flow exception was unhandled)
please help me on this i want to send images with size upto 200kb to 500kb