Conditionally Deleting Rows

Using the Auto filter mode for the desired value in the relative column, then marking each matching row in an added column, sorting on the added marked column and deleting entirely all marked rows is quite fast.

Voluntarily, macro erases the rows containing the selected cell (used as criterion) downwards from the selected row

Macro works also for selected empty cell

If anyone is interested, here is the macro:
It may look quite long but the main part is fairly small. The length is due to the dialogs and controls


Option Explicit
Sub Fast_erase_on_selection()

'Macro written 15/3/2005 by xxxxx xxxxxx
'Revision 1 dated 22/11/2009

'Variable definition
Dim a_ As String
Dim ad As String
Dim ad1 As String
Dim msg As String
Dim F_ As String
Dim ttl As String
Dim c_ As Integer
Dim sc As Integer
Dim ec As Integer
Dim r_ As Long
Dim cc As Long
Dim fec As Long
Dim cec As Long
Dim sr As Long
Dim er As Long
Dim a1 As Long
Dim v_ As Variant

On Error Resume Next

'If set, reset auto-filter
If ActiveSheet.AutoFilterMode Then
ActiveSheet.AutoFilterMode = False
End If

'Information on active cell
With ActiveCell
r_ = .Row
c_ = .Column
v_ = .Value
a_ = .Address
F_ = .NumberFormat
End With

'Error selection processing
If IsError(ActiveCell) Then
MsgBox "Selection points to an error cell. Macro stops"
Exit Sub
End If

If F_ <> "General" Then
v_ = Format(v_, F_)
End If

'Information on used range
With ActiveSheet.UsedRange
sr = .Row
sc = .Column
er = .Rows.Count + sr
ec = .Columns.Count + sc
ad = .Address
End With

'Control for a selection outside used range
'This control can be performed by the "Union" or by the "Intersect" method
'The "Intersect" method needs the "On Error Resume Next" statement
'Therefore the "Union" method is preferred and the "Intersect" method as well as the two "On Error.." statements are commented

'Union method
ad1 = Union(Range(ad), Range(a_)).Address
If ad1 <> ad Then
ttl = "Attention.... "
msg = "Attempt to run with a selection outside used range "
msg = msg & vbCr & "Macro ends!"
MsgBox msg, vbOKOnly + vbInformation, ttl
Exit Sub
End If

''''Intersect method
''' ad1 = Intersect(Range(ad), Range(a_)).Address
''' If ad1 <> a_ Then
''' ttl = "Attention.... "
''' msg = "Attempt to run with a selection outside used range "
''' msg = msg & vbCr & "Macro ends!"
''' MsgBox msg, vbOKOnly + vbInformation, ttl
''' Exit Sub
''' End If
''' On Error GoTo 0

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

'Applying auto-filtering
Columns(c_).Autofilter Field:=1, Criteria1:="=" & v_, VisibleDropDown:=True

'Inserting sort and erase criterion
Range(Cells(r_, ec), Cells(er - 1, ec)) = 1

'Exiting auto-filter mode
ActiveSheet.AutoFilterMode = False

'Sorting to entered criterion
Range(a_).CurrentRegion.Sort _
key1:=Cells(1, ec), _
order1:=xlAscending, _
Header:=xlNo, _
OrderCustom:=1, _
MatchCase:=False, _
Orientation:=xlTopToBottom

'Counting the rows to erase
a1 = Columns(ec).SpecialCells(xlCellTypeConstants, 1).Count

'Erasing rows
Range(Cells(1, 1), Cells(a1, 1)).EntireRow.Delete

'Getting focus back to start point
With Application
.ScreenUpdating = True
.Calculation = xlCalculationAutomatic
End With

Cells.EntireRow.Hidden = False
Range(a_).Select

msg = "On this run, on active column and for the used area downwards the selection " & vbCr

If v_ = "" Then
msg = msg & "Macro erased " & a1 & " empty cell(s) row(s)"
Else
msg = msg & "Macro erased " & a1 & " cell(s) rows(s), containing: """ & v_ & """"
End If

ttl = "Thank you for using our macro."

MsgBox msg, vbOKOnly + vbInformation, ttl

End Sub