static void Main(string[] args)
        {

            System.AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(UnhandledHandler);
.........


        static private void UnhandledHandler(object sender, UnhandledExceptionEventArgs args)
        {
            Exception e = (Exception)args.ExceptionObject;

            sendStatus("unhandled_error", e.Message);

        }


 public static void sendStatus(string act, string data)
        {
            Dictionary<string, string> messageObj = new Dictionary<string, string>();

            messageObj.Add("act", act);
            messageObj.Add("data", data);

            string JSONstr = "";

            try
            {
                JSONstr = new JavaScriptSerializer().Serialize(messageObj);
                Console.WriteLine(JSONstr);
            }
            catch (Exception e)
            {

            }

        }


..................

 sendStatus("error", ex.GetType().ToString());

..................


sendStatus("info", "Printer is ready");

sendStatus("paperCount", "255");

sendStatus("printStatus", "printStart");