Macro code help needed, please

I am using the code below tied to a command button at the top of the worksheet.  The code autofits all columns and puts a total line at the bottom, 1 row after the last row of data.  This worksheet receives data that is exported from access, so the amount of rows can vary.  The column headers begin in row 4.

It works great as long as there is more than 1 row of data.  If there is only 1 row of data (or no data rows)  the user receives a  "Run time error 1004, Application Defined  or Object Defined Error"  and line 27 is highlighted in code.   How can I correct this please?

Another user on this site provided me with this great macro... I am hoping a small tweak will fix this problem.

Thanks!


Sub DoTasks()

 Dim cell As Range
    Dim total As Long
    Dim rows_in_col As Long
    
    Dim header As Range
 'Find cells in header
    If Range("A4") = "" Then
        'May only be one cell in header
        Set header = Range("A4")
    Else
        Set header = Range(Range("A4"), Range("A4").End(xlToRight))
    End If
    
    'Find the max row
    For Each cell In header
        rows_in_col = Range(cell, cell.End(xlDown)).Count
        If rows_in_col > total Then
            total = rows_in_col
        End If
    Next cell
    
    'Add the sum column two rows below max
    For Each cell In header
        If cell.Column = 11 Or cell.Column = 12 Then
            Cells(cell.Row + total + 1, cell.Column).Formula = "=@subtotal(9," & Range(cell, cell.End(xlDown)).Address & ")"
        End If
    Next cell
    
    'Same command as double clicking the border.
    Range("A:M").EntireColumn.Autofit
    
    Cells(header.Row + total + 1, 1).Activate


End Sub

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snyperjAsked:
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FernandoFernandesConnect With a Mentor Commented:
change this line 26 only:
Range(Cells(header.Row + total + 1, 11), Cells(header.Row + total + 1, 12)).FormulaR1C1 = "=SUM(R5C:R[-2]C)"

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Arno KosterCommented:
snyperj,

when no data is added, the total variable (the number of rows) will be the number of available rows in the worksheet (eg. 1048573)
When you add 1 to it (as in line 34), it won't fit any more.

A better way would be to use

total = usedrange.rows.count

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instead of lines 17 up to 22.
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FernandoFernandesCommented:
I would fix the code by changing more things... but these changes below already do the job:
Sub DoTasks()

 Dim cell As Range
    Dim total As Long
    Dim rows_in_col As Long
    Dim header As Range
 'Find cells in header
    If Range("A4") = "" Then
        'May only be one cell in header
        Set header = Range("A4")
    Else
        Set header = Range(Range("A4"), Range("A4").End(xlToRight))
    End If
    
    If header Is Nothing Then Exit Sub
    
    'Find the max row
    For Each cell In header
        rows_in_col = Range(cell, cell.End(xlDown)).Count
        If rows_in_col > total And rows_in_col < Cells.Rows.Count - 5 Then
            total = rows_in_col
        End If
    Next cell
    
    If total > 1 Then
        Range(Cells(header.Row + total + 1, 1), Cells(header.Row + total + 1, header.Columns.Count)).FormulaR1C1 = "=SUM(R5C:R[-2]C)"
    End If
    
    'Same command as double clicking the border.
    Range("A:M").EntireColumn.AutoFit
    
    Cells(header.Row + total + 1, 1).Activate

End Sub

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FernandoFernandesCommented:
I am also against determining last row using a loop and the .End method of the range object from the top.
this is why I had to fix the condition inside the loop.
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snyperjAuthor Commented:

hmmm.. thanks for the efforts!

akoster - your change raises a new error, Runtime 424 Object Required and highlights the new line of code yo gave which I inserted instead of lines 17 - 22

Fernando- your change puts a total on every column.  How can I get it back to just the columns that were being totaled?  (11 & 12)

Thanks!
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snyperjAuthor Commented:
Success!   Thank you.
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