Console.WriteLine("That program can transfer small file. I've test up to 850kb file");

IPEndPoint ipEnd = new IPEndPoint(IPAddress.Any, 5656);

Socket sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.IP);

sock.Bind(ipEnd);

sock.Listen(100);

Socket clientSock = sock.Accept();

byte[] clientData = new byte[1024 * 5000];

string receivedPath = "c:/";

int receivedBytesLen = clientSock.Receive(clientData);

int fileNameLen = BitConverter.ToInt32(clientData, 0);

string fileName = Encoding.ASCII.GetString(clientData, 4, fileNameLen);

Console.WriteLine("Client:{0} connected & File {1} started received.", clientSock.RemoteEndPoint, fileName);


BinaryWriter bWrite = new BinaryWriter(File.Open(receivedPath + fileName, FileMode.Create)); ;

bWrite.Write(clientData, 4 + fileNameLen, receivedBytesLen - 4 - fileNameLen);

Console.WriteLine("File: {0} received & saved at path: {1}", fileName, receivedPath);

bWrite.Close();

clientSock.Close();

sock.Close();

if (File.Exists("c:\\screen.jpg"))

{

FileStream temp = File.Open(@"c:\\screen.jpg", FileMode.Open);

long filelen = temp.Length;

temp.Close();

if (filelen > 15000)

{

bmpScreenShot = new Bitmap(@"c:\\screen.jpg");

pictureBox1.Image = bmpScreenShot;

}

}