static void Main()
        {
            AppDomain.CurrentDomain.UnhandledException +=
              new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);
            Application.ThreadException +=
              new System.Threading.ThreadExceptionEventHandler(Application_ThreadException);
            ..............
        }

static void CurrentDomain_UnhandledException
        (object sender, UnhandledExceptionEventArgs e)
        {
            try
            {
                Exception ex = (Exception)e.ExceptionObject;
                logger.Log("sys_", "Fatal error (CurrentDomain_UnhandledException) ",ex.Message + ex.StackTrace);
            }
            finally
            {
                Application.Exit();
            }
        }

        public static void Application_ThreadException
          (object sender, System.Threading.ThreadExceptionEventArgs e)
        {
            logger.Log("sys_", "Application error (Application_ThreadException)", e.Exception.Message
                  + e.Exception.StackTrace);
        }