C#

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Linq;
using System.ServiceProcess;
using System.Text;
using System.Net.Mail;

namespace MyTestWindowsService
{
    public partial class MyTestWindowsService : ServiceBase
    {
        public MyTestWindowsService()
        {
            InitializeComponent();

            // if (!System.Diagnostics.EventLog.SourceExists("MyTestWindowsService"))
            // {
                // System.Diagnostics.EventLog.CreateEventSource("MySource", "MyNewLog");
            // }

            // eventLog1.Source = "MyEventLogSource";
            // eventLog1.Log = "MyNewLog Comes here!";
        }

        protected override void OnStart(string[] args)
        {
            // eventLog1.WriteEntry("In OnStart");
        }

        protected override void OnStop()
        {
            // eventLog1.WriteEntry("In onStop.");
        }

        protected override void OnContinue()
        {
            // eventLog1.WriteEntry("In OnContinue.");
        }

        private void timer1_Tick(object sender, EventArgs e)
        {

        }

        private void timer2_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
        {
            if (DateTime.Now.Minute == 30)
            {
                // eventLog1.WriteEntry("starting to send email.");

                try
                {
                    MailMessage mail = new MailMessage();
                    SmtpClient SmtpServer = new SmtpClient("smtp.gmail.com");

                    mail.From = new MailAddress("it@mydomain.com");
                    mail.To.Add("jassim@mydomain.com");
                    mail.Subject = "Test Mail";
                    mail.Body = "This is for testing SMTP mail from GMAIL";

                    SmtpServer.Port = 587;
                    SmtpServer.Credentials = new System.Net.NetworkCredential("it@mydomain.com", "mypassword");
                    SmtpServer.EnableSsl = true;

                    SmtpServer.Send(mail);

                    // eventLog1.WriteEntry("email sent.");
                }
                catch (Exception ex)
                {
                    // MessageBox.Show(ex.ToString());
                    // eventLog1.WriteEntry("failed sending email.");
                }
            }
        }
    }
}

Jassim Rahma wrote:

the same problem

Jassim Rahma wrote:

but what's the best way to do it.

Bastard Programmer from Hell
If you can't read my code, try converting it here[^]

Jassim Rahma wrote:

so if I have 10 clients then I'll need 10 dongles!

Bastard Programmer from Hell
If you can't read my code, try converting it here[^]

Eddy Vluggen wrote:

then you're going to piss of both the users and the people who have to provide support

jschell wrote:

Of course the same happens if they lose the dongle and then you tell them they
have to buy the software again.

Bastard Programmer from Hell
If you can't read my code, try converting it here[^]

0x1234 + 0x6743
is worked out in 8 bits as:
    0x34 + 0x43      == 0x77 plus a zero carry 
and 0x12 + 0x67 + 0  == 0x79

== 0x7977

OriginalGriff wrote:

how big a pair