gistfile1.cs

            var buffer = new byte[1024];
            this.networkStream.BeginRead(
                buffer,
                0,
                1024,
                new AsyncCallback(ReceivedMessage),
                buffer);
                
                        private void ReceivedMessage(IAsyncResult ar)
        {
            var buffer = ar.AsyncState as byte[];

            int bytesReceived = this.networkStream.EndRead(ar);
            ar.AsyncWaitHandle.WaitOne();

            if (bytesReceived == 0)
            {
                return;
            }

            string result = System.Text.Encoding.Default.GetString(buffer);
        }