Forum Discussion

Copper Contributor

Jul 01, 2022

Solved

Help with Macro Hygiene Please

It's not that the macros run slowly, or that Excel crashes, but it just takes a while to get excel selected when coming from another program or webpage. I tend to have to cut and paste a good de...

Macros and VBA

NikolinoDE

Jul 01, 2022

CHileman

Try setting up your macro like this, it should actually be faster.

With Application
    .Calculation = xlCalculationManual
    .ScreenUpdating = False
    .EnableEvents = False
End With

'Here insert your code

With Application
    .Calculation = xlAutomatic
    .ScreenUpdating = True
    .EnableEvents = True
End With

Example according to your code specifications.

'Example with your first code

Sub Unhide_All()
With Application
    .Calculation = xlCalculationManual
    .ScreenUpdating = False
    .EnableEvents = False
End With
If (ActiveSheet.AutoFilterMode And ActiveSheet.FilterMode) Or ActiveSheet.FilterMode Then
  ActiveSheet.ShowAllData
End If

Columns.EntireColumn.Hidden = False
Rows.EntireRow.Hidden = False
With Application
    .Calculation = xlAutomatic
    .ScreenUpdating = True
    .EnableEvents = True
End With
End Sub

Hope I was able to help you :).

NikolinoDE

I know I don't know anything (Socrates)

NikolinoDE

Platinum Contributor

Jul 08, 2022

CHileman

Try to explain 🙂 in a few words why these commands could be used.

Please also consider that I do not know the formula and VBA structure of your workbook.

Calculation:

If you change cells/columns, etc. with VBA, to which functions of other cells refer, a recalculation is always started.

Depending on the functions and the associated number of calculations, it can have an impact (mostly negative) on performance.

While Excel is working on the recalculation, the processing of the program code is slowed down because the program flow only continues when the calculation has been completed for the time being.

You can avoid this problem by switching off the automatic calculation in the initial code.

EnableEvents:

The Select methods in the macro would re-invoke the macro called by moving the cursor around the worksheet. Setting the EnableEvent property to False prevents this from happening.

Disabling screen updating speeds up your macro code. While you won't be able to see what the macro is doing, it will run much faster. The ScreenUpdating property should end up being set back to True when your macro exits.

Excel VBA reference (here you can find general information about VBA)

CHileman

Copper Contributor

Jul 08, 2022

Thanks again NikolinoDE, all that makes perfect sense to me why it would help while running the macros - but why would it change anything at all for when the macros aren't being run? The only way to call them is to select them manually. Don't get me wrong, I love that they work! But I'm just baffled as to why they work.