excel-vba Excel-VBA Optimization Row Deletion - Performance
Example
-
Deleting rows is slow, specially when looping through cells and deleting rows, one by one
-
A different approach is using an AutoFilter to hide the rows to be deleted
-
Copy the visible range and Paste it into a new WorkSheet
-
Remove the initial sheet entirely
-
With this method, the more rows to delete, the faster it will be
Example:
Option Explicit
'Deleted rows: 775,153, Total Rows: 1,000,009, Duration: 1.87 sec
Public Sub DeleteRows()
Dim oldWs As Worksheet, newWs As Worksheet, wsName As String, ur As Range
Set oldWs = ThisWorkbook.ActiveSheet
wsName = oldWs.Name
Set ur = oldWs.Range("F2", oldWs.Cells(oldWs.Rows.Count, "F").End(xlUp))
Application.ScreenUpdating = False
Set newWs = Sheets.Add(After:=oldWs) 'Create a new WorkSheet
With ur 'Copy visible range after Autofilter (modify Criteria1 and 2 accordingly)
.AutoFilter Field:=1, Criteria1:="<>0", Operator:=xlAnd, Criteria2:="<>"
oldWs.UsedRange.Copy
End With
'Paste all visible data into the new WorkSheet (values and formats)
With newWs.Range(oldWs.UsedRange.Cells(1).Address)
.PasteSpecial xlPasteColumnWidths
.PasteSpecial xlPasteAll
newWs.Cells(1, 1).Select: newWs.Cells(1, 1).Copy
End With
With Application
.CutCopyMode = False
.DisplayAlerts = False
oldWs.Delete
.DisplayAlerts = True
.ScreenUpdating = True
End With
newWs.Name = wsName
End Sub
