Excel Insert formula in column A & B for any row where column D is not null/blank

I have a formula in A2 and B2 and I am currently using the following to auto-fill the formula from A2 "=M2-7" into column A and "=L2" into column B of any row where column D is not blank/null.  The problem is that it's not very consistent. sometimes it works and sometimes it doesn't.

Seems like it would be better to just write the formula into each cell where D is not blank/null?

This is how I am doing it now.

Sub Autofill ()

    Sheets("Engines").Select
    Range("A2").Select
   
    Dim lastrow As Long
    lastrow = Worksheets("Engines").Cells(Rows.Count, "D").End(xlUp).Row
    Selection.AutoFill Destination:=Range("A2:A" & lastrow)
    Range("B2").Select
    Selection.AutoFill Destination:=Range("B2:B" & lastrow)

End Sub

Thanks,

swjtx99
swjtx99Asked:
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NorieConnect With a Mentor VBA ExpertCommented:
If the formulas are as simple as you posted.
Sub MyAutofill ()
Dim lastrow As Long

    With Worksheets("Engines")
           lastrow = .Cells(Rows.Count, "D").End(xlUp).Row
           .Range("A2:B" & LastRow).Formula = Array("=M2-7", "=L2")
    End With
End Sub

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Saqib Husain, SyedEngineerCommented:
In what way does it NOT work?
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NorieVBA ExpertCommented:
Does this work any better?
Sub MyAutofill ()
Dim lastrow As Long

    With Worksheets("Engines")
           lastrow = .Cells(Rows.Count, "D").End(xlUp).Row
           .Range("A2:B2").Copy .Range("A2:B" & lastrow)
    End With
End Sub

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swjtx99Author Commented:
Hi ssaqibh,

Very strange sometimes it just deletes everything in columns a and b. I've messed with it for hours and can't figure out why. Thought maybe just doing something like formula.r1c1? but I've been googling for examples how to do that and haven't found anything close enough yet.

Hi imnorie,

I think the problem is that the formula I have put into A2 and B2 gets deleted for some unknown reason so not sure your solution would work either. Funny it doesn't happen every time.
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Saqib Husain, SyedEngineerCommented:
Can you send us a small sample workbook?
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swjtx99Author Commented:
Hi,

Ok, I just figured out why the formulas in A2 and B2 are getting deleted.

In a section above, I'm deleting all rows that match a certain criteria in column G. The reason why sometimes it worked and sometimes it didn't is because sometimes the value in G2 matched (and thus got deleted) and sometimes it didn't. I suppose I could have that search/delete happen AFTER I populate columns A and B. Might be simpler than trying to insert the formula and copy it down?

swjtx99
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swjtx99Author Commented:
Hi,

Ok, I moved the code and all is well.

Thanks for taking a look at my question.

swjtx99
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swjtx99Author Commented:
I think moving the code as I did solved the problem but your solution also works and I can archive and save for later. Populating a formula into a Cell is a good solution to have.

Thanks for the help.

swjtx99
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