I'm making a list of employee info , i want to do the following :
Whenever i enter a value in a cell of employee code feild , excel checks if
it is duplicated or not , if yes display an error message "Value duplicated "
or any action to reject the inserted value, if no the new value is accepted

Thank you

Private Sub Worksheet_Change(ByVal Target As Range)
Dim nFound As Long

On Error GoTo ws_exit:
Application.EnableEvents = False
If Not Intersect(Target, Me.Range("A1:A100")) Is Nothing Then
With Target
If Application.CountIf(Me.Range("A1:A100"), .Value) 1 Then
MsgBox .Value & " is duplicate"
.Value = ""
End If
End With
End If

ws_exit:
Application.EnableEvents = True
End Sub

'This is worksheet event code, which means that it needs to be
'placed in the appropriate worksheet code module, not a standard
'code module. To do this, right-click on the sheet tab, select
'the View Code option from the menu, and paste the code in.





--
HTH

Bob Phillips

"Tahani" wrote in message
...
I'm making a list of employee info , i want to do the following :
Whenever i enter a value in a cell of employee code feild , excel checks
if
it is duplicated or not , if yes display an error message "Value
duplicated "
or any action to reject the inserted value, if no the new value is
accepted

Thank you

Use Data Validation.

see http://www.j-walk.com/ss/excel/usertips/tip027.htm

DM Unseen

Thank you very much
Appreciate your help

"Bob Phillips" wrote:

Private Sub Worksheet_Change(ByVal Target As Range)
Dim nFound As Long

On Error GoTo ws_exit:
Application.EnableEvents = False
If Not Intersect(Target, Me.Range("A1:A100")) Is Nothing Then
With Target
If Application.CountIf(Me.Range("A1:A100"), .Value) 1 Then
MsgBox .Value & " is duplicate"
.Value = ""
End If
End With
End If

ws_exit:
Application.EnableEvents = True
End Sub

'This is worksheet event code, which means that it needs to be
'placed in the appropriate worksheet code module, not a standard
'code module. To do this, right-click on the sheet tab, select
'the View Code option from the menu, and paste the code in.





--
HTH

Bob Phillips

"Tahani" wrote in message
...
I'm making a list of employee info , i want to do the following :
Whenever i enter a value in a cell of employee code feild , excel checks
if
it is duplicated or not , if yes display an error message "Value
duplicated "
or any action to reject the inserted value, if no the new value is
accepted

Thank you