Exclude first row from macro - vba

Question

I have a macro that puts the current time into a cell upon editing any row. my problem is that this macro also executes for row 1 which are the titles. So it ends up changing the title of a column to a time.
The macro works fine but still changes the title. I tried the following:
Private Sub Worksheet_Change(ByVal Target As Range)
Application.EnableEvents = False
If ActiveCell.Row = 1 Then Exit Sub
Cells(Target.Row, "I").Value = Now
Application.EnableEvents = True
End Sub

Answer 1

The ActiveCell can change to something else after you edit, so use the Target range rather than the ActiveCell. For example, if I hit {enter} to finish my edit, the ActiveCell is now on row 2 rather than 1.
Private Sub Worksheet_Change(ByVal Target As Range)
Application.EnableEvents = False
With Target
If .Row > 1 Then
Cells(.Row, "I").Value = Now
End If
End With
Application.EnableEvents = True
End Sub
I'm using With syntax to show the same Row you are comparing is the one you are editing. You could still put these on separate lines if you wish.
Also, user Jeeped makes a good point about the Application.EnableEvents = True line. It won't run if the row is 1, so they get turned off indefinitely. Better to test for > 1 and only run your update code on that condition.

Answer 2

If you turn off event handling, provide error control that makes sure that events will be re-enabled.
Private Sub Worksheet_Change(ByVal Target As Range)
On Error GoTo Safe_Exit
Application.EnableEvents = False
Dim r As Long, rw As Long, rng As Range, newTarget As Range
For Each rng In Target
If rng.Column <> 9 Then
If newTarget Is Nothing Then
Set newTarget = rng
Else
Set newTarget = Union(newTarget, rng)
End If
End If
Next rng
For r = 1 To newTarget.Rows.Count
rw = newTarget.Rows(r).Row
If rw > 1 Then _
Cells(rw, "I").Value = Now
Next r
Safe_Exit:
Application.EnableEvents = True
End Sub
If you are pasting or filling a large number of values then Target is all of the cells that changed. You need to guard against the top row while everything else receives the timestamp. When Target is more than a single cell, you only want to timestamp once per row.
And you don't want to turn off event handling then exit without turning it back on again.