Code jumps to WS_Calculate on a different sheet

  • Thread starter Thread starter JMay
  • Start date Start date
J

JMay

I'm stepping through a Standard module on my Sheet2, but suddenly my code
jumps to a Private Sub Worksheet_Calculate which is a part of my Worksheet7.
Why is that?
 
If you changed a cell value that would trigger a recalc, then that happens
all the time.

It is best to preceed your code with this is you make and changes to cell in
code:

Dim myCalc As Excel.XlCalculation
With Application
.EnableEvents = False
myCalc = .Calculation
.Calculation = xlCalculationManual
.ScreenUpdating = False
End With

'and finish with
With Application
.EnableEvents = True
.Calculation = myCalc 'xlCalculationAutomatic is the usual setting
.ScreenUpdating = True
End With

HTH,
Bernie
MS Excel MVP
 
E-X-P-A-N-D-I-N-G on your comment
"If you changed a cell value that would trigger a recalc, then that happens
all the time" -

might I embellish your statement by saying:

If you change a cell value ON ANY WORKSHEET - that triggers a recalc, AND
IF you have a Worksheet_Calculate on ANY Code-Sheet in your ActiveBook, This
Event Code Module Fires - and that happens all the time.

Right?????

Thanks, Jim

:
 
Nope.

Try a small experiment.

Create a new workbook with 3 sheets.

Put this behind each worksheet:

Option Explicit
Private Sub Worksheet_Calculate()
MsgBox Me.Name
End Sub


Then go back to one sheet and type this in any cell:
=rand()
and hit enter.

Excel is pretty smart when it thinks, er, knows that it has to recalculate a
sheet.
 
I know it has been a while since this was posted, but I had the same problem
as you were describing (WS_Calculate is occurring even when a change is made
on another WS that should not trigger the event) and after searching I found
the following response from Jim Thomlinson which helped me out greatly. As
Jim describes, I had "volatile" functions on the sheet with the WS_Change
event and these volatile functions would calculate anytime a change was made
on the sheet or on any other sheet. Try an experiment similar to the one
Dave Peterson mentioned in this post and you will see that a =Now() or
=Today() function will calculate when any change on any sheet is made.
Hopefully it is helpful to someone else with the same problem.

Copied message as follows (from 8/30/2005)...

---------------------------------------------------------------------------------------

=Now() is a volatile function, meaning that it calculates every time that a
calculation is executed. If you can, try to find a way to replace the now
function with a constant. You can update the constant base on some other
event such as a sheet activate or workbook open or... Otherwise you can also
add a criteria to the calculation event that ThisWorkbook is the active
workbook. If it isn't then abort the rest of the procedure.
 
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