Hi,

I don't know what kind of value/data I have to write instead of my ???

.......
m_ScanForDongle.Elapsed += System.EventHandler(ScanForDongle_Elapsed(???, ???));
......
......
......

private void ScanForDongle_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
{
CheckDongle();
}

ps:could you give me an exemple please.

thanks.