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WorcseFlag for United States of America

asked on

Pause Button

I have code which loops through a customer database table and emails each customer via Outlook 07.
This code is fired from a form with a command button.
Is there anyway I can manually pause this code (either by clicking a command button or perhaps a keystroke) and then resume the code at the point it stopped?
~Worcse
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David Lee
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Hi, Worcse.

You can set a breakpoint in the code.  that will pause execution at that point until you tell it to resume.  To set a breakpoint, open the code editor. click on the line you want to break on, and press F9.  The line will turn red.
you can also set a hard breakpoint using "Stop" it will pause execution and could be programmed to your button
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ASKER

BlueDevilFan -
Thank you for the response.  What I am looking for is a way (if possible) to pause the code after it has fired.  
If my table contains 3000 emails and I fire the code... it starts the looping and email process.  Lets say that after a random number of loops I want to pause the code....  is this possible?
yes set a counter and use "stop" when appropriate
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ASKER

cmrobertson -
Thank you... could you give me a little more in-depth information behind you answer?
yes, but what would you want to do during the pause?

I would probably do something like add another button to the form (call it cmd_Pause_Resume).  I would set its Caption to "Pause" and the Tag property to -1.

When you click the button to start this email process, I woud enable cmd_Pause_Resume, and the Click event of this button would look like:

Private sub cmd_Pause_Resume_Click

    Me.cmd_Pause_Resume.Tag = Not Me.cmd_Pause_Resume.Tag
    Me.cmd_Pause_Resume.Caption = IIf(Me.cmd_Pause_Resume.Tag = 0, "&Resume", "&Pause")
    if me.cmd_Pause_Resume.Tag = - 1 then Call SendEmail(False)    
End Sub

In the code module that actually sends your email, I would add a declaration to indicate whether you are starting this process from scratch or resuming.  It might look like below.

Public Sub SendEmail(Optional Reset as Boolean = True)

With this declaration statement, you can tell the function whether to reset the static variable described below.

If Reset then lngAbsRec = 0

I would also insert a line in the declaration section of this same code module which sends your email.  This line would declare a static variable (lngAbsRec) which will be used to determine what record to start on if you resume the email process.

Static lngAbsRec as Long

At the bottom of your loop, I would add a line of code that checks the Tag property of cmd_Pause_Resume.  If the Tag property changes to 0, the I would exit the loop and close the recordset.  In total, that code module would look something like:

Public Sub SendEmail(Optional Reset as Boolean = True)

    Static lngAbsRec as Long
    Dim strSQL as string
 
    strSQL = "SELECT [email] from [your table]"
    Set rs = currentdb.openrecordset (strsql,, dbfailonerror)

    'If you are resuming the process, skip to the next record in the recordset
    if Reset = False AND lngAbsRec > 0 Then
        docmd.GoToRecord ,,acGoTo, lngAbsRec + 1
    End if

    'Loop through the records in the recordset
    Do while not rs.eof
        'send your email here

        lngAbsRec = rs.absolutePosition
        if me.cmd_Pause_Resume.Tag = 0 then Exit Do
        rs.movenext
    Loop

    rs.close
    set rs = nothing

End Sub

Hope this helps.
Dale
If you use the command "Stop" it is just like setting a break point in code, the major difference being it is saved when you close and reopen your project, so yoiu could say:
ictr = 0
Do for whatever your condition is
    ictr = ictr + 1
    if ictr = 100 then
        stop
    endif
loop
See sample attached.

All you would need to do is modify the SendMail subroutine to open your recordset that contains email addresses.
PauseLoop.accdb
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ASKER

So sorry for the delay ~ Family... can't live with em - cant' give em away

fyed:  your suggestion looks like a possible solution... unfortunately, my parameters have changed so I don't know if I will need to open a new question or if I can continue with this one.  I guess the EE gods will let me know.

What I need to accomplish is for my code to loop through and email the first 200 emails in my table
I then need a 15 minute pause
Then I need to email the next 200 emails in the table
And then pause for 15 minutes....  until EOF

How would I accomplish this...?
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Dale Fye
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fyed ~
Sorry for my delay in getting back to you.
Your suggestion/answer was spot on...!!!
U Da Man
Thank your again for your help.
worcse~