Rick,
Thanks for the reply. The firing interval indicated in my original message might have been a little high (and will be user defined i.e. the user can change it) but it probably will not be less than one second.

Have you ever created a windows service that is using a timer in this way before? Any comments would be appreciated.

Thanks again for your reply and explanation.

Sincerely,
Einar

>Einar,
>
>Timers are pretty efficient. They're basically a threading mechanism that fires off new threads (or threadpool threads really). If I remember right these timers are pretty close to underlying OS APIs so there's very little overhead for them, especially in low firing intervals as yours (many seconds).
>
>Remember too that timers fire events on a separate thread, so they don't genearlly hold up the main app. Just make sure you keep the code in the handler simple and quick and if it's not to utilize Application.DoEvents() liberally.
>
>+++ Rick ---