If cell is blank delete entire row [duplicate] - vba

Question

This question already has answers here:
Excel VBA - Delete Rows Based on Criteria
(2 answers)
Closed 4 years ago.
In Excel, I want to delete entire row if a cell is blank.
This should count for A17:A1000.
Running the script it returns the error:
Run-time 1004 error
Method Range of object global failed
If I replace A17:A1000 with A it deletes some rows.
Sub DeleteBlanks()
Dim r As Long
Dim m As Long
Application.ScreenUpdating = False
m = Range("A17:A1000" & Rows.Count).End(xlUp).Row
For r = m To 1 Step -1
If Range("A17:A1000" & r).Value = "" Or Range("A17:A1000" & r).Value = 0 Then
Range("A17:A1000" & r).EntireRow.Delete
End If
Next r
Application.ScreenUpdating = True
End Sub

Answer 1

The main issue in your code is that it is counting wrong.
"A17:A1000" & r does not count the rows up but appends the number r to that string. So eg if r = 500 it will result in "A17:A1000500" but not in "A17:A1500" as you might expected.
To delete all rows where column A has a blank cell you can use
Option Explicit
Public Sub DeleteRowsWithBlankCellsInA()
Worksheets("Sheet1").Range("A17:A1000").SpecialCells(xlCellTypeBlanks).EntireRow.Delete
End Sub
This one deletes all blank lines at once and therefore is pretty fast. Also it doesn't need to disable ScreenUpdating because it is only one action.
Or if blank and zero cells need to be deleted use
Option Explicit
Public Sub DeleteRowsWithBlankOrZeroCellsInA()
Dim ws As Worksheet
Set ws = ThisWorkbook.Worksheets("Sheet1") 'define which worksheet
Dim LastRow As Long
LastRow = ws.Cells(ws.Rows.Count, "A").End(xlUp).Row
Dim iRow As Long
For iRow = LastRow To 1 Step -1
If ws.Cells(iRow, "A").Value = vbNullString Or ws.Cells(iRow, "A").Value = 0 Then
ws.Rows(iRow).Delete
End If
Next iRow
End Sub
This one deletes line by line. Each delete action takes its time so it takes longer the more lines you delete. Also it might need to disable ScreenUpdating otherwise you see the line-by-line action.
An alternative way is to collect all the rows you want to delete with Union() and then delete them at once.
Option Explicit
Public Sub DeleteRowsWithBlankOrZeroCellsInA()
Dim ws As Worksheet
Set ws = ThisWorkbook.Worksheets("Sheet1") 'define which worksheet
Dim LastRow As Long
LastRow = ws.Cells(ws.Rows.Count, "A").End(xlUp).Row
Dim DeleteRange As Range
Dim iRow As Long
For iRow = LastRow To 1 Step -1 'also forward looping is possible in this case: For iRow = 1 To LastRow
If ws.Cells(iRow, "A").Value = vbNullString Or ws.Cells(iRow, "A").Value = 0 Then
If DeleteRange Is Nothing Then
Set DeleteRange = ws.Rows(iRow)
Else
Set DeleteRange = Union(DeleteRange, ws.Rows(iRow)) 'collect rows to delete
End If
End If
Next iRow
DeleteRange.Delete 'delete all at once
End Sub
This is also pretty fast because you have again only one delete action. Also it doesn't need to disable ScreenUpdating because it is one action only.
In this case it is also not necessary to loop backwards Step -1, because it just collects the rows in the loop and deletes at once (after the loop). So looping from For iRow = 1 To LastRow would also work.

Answer 2

There are multiple errors in your code.
First of all, your procedure should have it's scope declared.
Presumably in your case Private
You are incorrectly defining your Range() Please look at its definition
Range.Value = 0 is not the same as Range = "" or better yet IsEmpty(Range)
Looping from beginning to end when deleting individual rows will cause complications (given their indexes [indices(?)] change) - or to better word myself - it is a valid practice, but you should know what you're doing with the indexes. In your case it seems much easier to them them in the LIFO order.
Last but not least, you're unnecessarily complicating your code with certain declarations (not an error so to say, but something to be improved upon)
With all the considered, your code should look something like this:
Option Explicit
Private Sub remove_empty_rows()
Dim ws as Worksheet: Set ws = Sheets("Your Sheet Name")
Dim lr as Long
lr = ws.Cells(Rows.Count, 1).End(xlUp).Row
Dim i as Long
For i = lr to 1 Step -1
If IsEmpty(ws.Cells(i, 1)) Then
ws.Rows(i).Delete
End If
Next i
End Sub
In general, without meaning to sound condescending, it looks like you have some learning gaps in your coding practice. I'd refer properly reading some documentation or tutorial first, before actually doing coding like this yourself.

Answer 3

Taking into account that A17 cell is a header, you could use AutoFilter instead of iterating over cells:
Sub FastDeleteMethod()
Dim rng As Range, rngFiltered As Range
Set rng = Range("A17:A" & Cells(Rows.Count, "A").End(xlUp).Row)
With rng
.AutoFilter Field:=1, Criteria1:=0, Operator:=xlOr, Criteria2:="="
On Error Resume Next
Set rngFiltered = rng.SpecialCells(xlCellTypeVisible)
If Err = 0 Then rngFiltered.EntireRow.Delete
On Error GoTo 0
End With
End Sub