Hi,

I am trying to convert a numeric cell entry to time format, but I am
also checking the time is in multiples of ten minutes ie 12:10 and not
12:01.

I have written the code below, which works to a degree, but if I type
0600 i get an invalid entry prompt. I think is because of excel not
seeing the leading zero? How can I force this? I tried formatting to
"0000", but its not worked.

The msgbox's are just there to help me check the error capture

hope you can help,
Matt



Private Sub Worksheet_Change(ByVal Target As Range)

On Error GoTo ErrHandler
'Target.NumberFormat = "0000"
'MsgBox Len(Target.Value)

If Application.Intersect(Target, Range("E3:E10")) Is Nothing Then
'check the range needs to be queried
Exit Sub
End If
If Target.Cells.Count 1 Then 'check only one cell has been changed
Exit Sub
End If
If Target.Value = "" Then 'check to see if the cell is empty
Exit Sub
End If

If Target.Value 9999 Then 'check the entry is less than four digits
GoTo ErrHandler
End If

Application.EnableEvents = False

With Target
If Len(.Value) = 3 Then 'add the leading zero?
MsgBox "YES"
.Value = "0" & .Value
End If

MsgBox Left(.Value, 2) 'check the hours digits are less than 24
If Left(.Value, 2) 23 Then
GoTo ErrHandler
End If
MsgBox Right(Target.Value, 2) 'check the minutes digits are 50 or
less
If Right(Target.Value, 2) 50 Then
GoTo ErrHandler
End If

MsgBox Right(Target.Value, 1) 'check the minute is a multiple of
ten minutes
If Right(Target.Value, 1) < 0 Then
GoTo ErrHandler
End If
End With

Dim TimeStr As String 'change to time format
With Target
TimeStr = Left(.Value, 2) & ":" & _
Right(.Value, 2)
.Value = TimeValue(TimeStr)
End With

Application.EnableEvents = True

byebye:
Exit Sub

ErrHandler:
MsgBox "Invalid data entered"
Target.Value = ""
Application.EnableEvents = True
GoTo byebye

End Sub