TcpListener server = new TcpListener(IPAddress.Any, portNumber); server.Start(); TcpClient client = server.AcceptTcpClient();
NetworkStream stream = client.GetStream(); byte[] buffer = new byte[1024]; int bytesRead = stream.Read(buffer, 0, buffer.Length); string data = Encoding.ASCII.GetString(buffer, 0, bytesRead);
byte[] data = Encoding.ASCII.GetBytes("Hello, client!"); stream.Write(data, 0, data.Length);This code converts the string "Hello, client!" to a byte array using ASCII encoding and writes it to the client's NetworkStream. The TcpListener class is part of the System.Net.Sockets namespace, which is included in the .NET Framework.