Postgre Notification example ASP.Net Core 2.0

        private void PostgresNotification(object sender, NpgsqlNotificationEventArgs e)
        {
            Console.WriteLine("HELLO");
            Console.WriteLine("HELLO");
            Console.WriteLine("HELLO");
            Console.WriteLine("HELLO");
            Console.WriteLine("HELLO");
            Console.WriteLine("HELLO");
            Console.WriteLine("HELLO");
            Console.WriteLine("HELLO");
            Console.WriteLine("HELLO");
            Console.WriteLine("HELLO");
            Console.WriteLine("HELLO");
            Console.WriteLine("HELLO");
            Console.WriteLine("HELLO");
            Console.WriteLine("HELLO");
            Console.WriteLine("HELLO");
        }

        private static NpgsqlConnection _notificationConnection;

        private void StartListening()
        {
            _notificationConnection =
                new NpgsqlConnection(@"Host=35.188.31.108;Database=maniakids;Username=postgres;Password=88134165");
            _notificationConnection.Open();

            var sql = "listen mynotification";

            using (var command = new NpgsqlCommand(sql, _notificationConnection))
            {
                command.ExecuteNonQuery();
            }

            _notificationConnection.Notification +=
                PostgresNotification;

            Task.Factory.StartNew(() =>
            {
                while (true)
                    _notificationConnection.Wait();
            });
        }