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Running Code every 10 Minutes

Posted on 2008-06-25
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Last Modified: 2010-05-18
I want to execute a piece of code every ten minutes or so.  How can I do that in VB.NET 1.1?  The code will send an E-mail to roughly 100 people.  I don't need assistance on the E-mailing, just the piece that manages the timing.  If it helps, as an example, let's say I have 500 people to send a message to.  I need to send the message to the first 100, wait 10 minutes, then send it to 101-200, wait ten minutes, and so on until I have sent it to all 100.  I need to be able to set this code to start at a particular time as well.
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Question by:ftbadolato
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LVL 3

Expert Comment

by:GHCS_Mark
ID: 21870732
Use a Timer object and set the interval to 600 seconds or 60000 milliseconds.  I can not remember which it is based upon.

If you want to start it at a specific time, you could simply use the same routine to see if the current time is beyond an "Alarm" time and then run the code.  You may need two timer objects though.
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LVL 86

Assisted Solution

by:Mike Tomlinson
Mike Tomlinson earned 100 total points
ID: 21870946
The Timer Interval is in Milliseconds.

So you can do:  (in the Form Load event)

    Timer1.Interval = TimeSpan.FromMinutes(10).TotalMilliseconds
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Author Comment

by:ftbadolato
ID: 21871222
Sorry...this is really new to me.  Can you provide an entire snippet of how to set the start time and then make it run every ten minutes....or maybe I should just make it run every ten minutes all the time.  Any objections to that?
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LVL 86

Expert Comment

by:Mike Tomlinson
ID: 21871339
Is this WinForms or WebForms?
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Author Comment

by:ftbadolato
ID: 21871666
web
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LVL 86

Expert Comment

by:Mike Tomlinson
ID: 21871702
Ah...sorry then.  I have nooooooooooooo clue how to do it properly in a webform.  =\

I'm a WinForms guy...  ;)
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Expert Comment

by:GHCS_Mark
ID: 21872653
About the only way I can see you doing this would be to utilise a javascript which implements setTimeout()
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Accepted Solution

by:
Bruce_1975 earned 320 total points
ID: 21873514
If it's running on the server, you can use the following example

Regards,
Bruce
Public Class TimerExample
    Dim WithEvents timer As System.Timers.Timer
 
    Public Sub New(ByVal Interval As Integer)
        timer = New System.Timers.Timer(TimeSpan.FromMinutes(Interval).TotalMilliseconds)
        timer.AutoReset = True
        timer.Start()
    End Sub
 
    Private Sub timer_Elapsed(ByVal sender As Object, ByVal e As System.Timers.ElapsedEventArgs) Handles timer.Elapsed
        'do the mailing stuff here
    End Sub
 
End Class

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LVL 48

Assisted Solution

by:jpaulino
jpaulino earned 80 total points
ID: 21879688
Why don't you do that using AJAX ?

How Do I: Use the ASP.NET AJAX Timer Control?
http://www.asp.net/learn/ajax-videos/video-99.aspx
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Author Comment

by:ftbadolato
ID: 23114584
I don't get it....points have been awarded....why delete it?
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