Hello everyone.
I'm using vb 2005. I'm creating program that run as service on windows.
And in my program I need to use timer, so I'm using timer object from
component. I try my source code on another project that use windows
form and it work. But when I implement my source code on my program
that run as service on windows (I have change the code so it would work
on service but I still use timer object from component), and it doesn't
work. I'm suspecting that the problem is because I use timer object
from component. I need some suggestion here. Thanks in advances.

Lemune wrote:
System.Threading.Timer?
System.Timers.Timer?
System.Windows.Forms.Timer?

As ever, /please/ define "doesn't work".

The Service doesn't start [properly]?
The Timer never seems to fire?
The Timer fires initially, then "gives up" after a while?

System.Timers.Timer is the one you want.

Better still, only use this Timer to "side-step" the OnStart method's
call/return sequence (allowing Windows to tell that your service has
started properly), then kick off your main processing loop and, within
that, use System.Threading.Thread.Sleep() /instead/ of a Timer,
something like:

Imports System.Threading

Private bRunService as Boolean = True
Private bStopped as Boolean = False

Sub OnStart()
    tmrStarter.Start()
End Sub

Sub OnStop()
     ' If you have a long-running process that /must/ finish cleanly,
     '   don't allow OnStop to return until you've cleaned up.
     ' Windows will kill your Service process as soon as OnStop returns.
     bRunService = False
     Do While Not bStopped
         Thread.Sleep( 1000 )
     Loop
End Sub

Sub tmrStarter_Elapsed( ... ) _
     Handles tmrStarter.Elapsed

     tmrStarter.Stop()
     Me.Run()
End Sub

Sub Run()
     Do While bRunService
         DoSomethingUseful()
         Thread.Sleep( 100 )
     Loop
     bStopped = True
End Sub

HTH,
    Phill  W.

Thank you for your advice.

I think I use System.Windows.Forms.Timer. :))

My service start just fine, but it seem that the timer  never fire.

I will try using System.Threading.Timer. And I will inform you again.

Thank you Phill  W.
I have use your suggestion. And my service work. Know i use
System.Timers.Timer and System.Threading.
Once again thanks Phill

Thank you Phill  W.
I have use your suggestion. And my service work. Now i use
System.Timers.Timer and System.Threading.
Once again thanks Phill

Multithread Revisted
ulong vs UInt64
Live multi-user debugging? Help!
Can I use an asterisk in the "Imports" statement?
Accessing existing Excel instance
CheckedListbox backcolor question
File.Exists not working.
Transferring data between datatables and between datareader and datatable
Confused About Dispose and Finalize in VS.Net
How to use DataGridComboColumnStyle