Dim CoutUnitaire(10) As Variant
Dim i As Integer


Worksheets("Mold base").Activate
Range("c17").Activate

For i = 1 To 10

CoutUnitaire(i) = _
Application.VLookup(ActiveCell.Offset(i, 0).Value, _
Worksheets("ListePrix").Range("A:d"), 4, False)
Next i

for i = 1 to 10
if iserror(CoutUnitaire(i)) then
msgbox "Value was not found"
else
msgbox "Value found with results of " & CoutUnitaire(i)
End if
Next

End Sub


If you don't use WorksheetFunction as a qualifier to Vlookup, it doesn't
return a trappable error - it returns an error equivalent to those found in
Cells (#N/A as an example).

which will be shown like this:

? CVErr(xlErrNA)
Error 2042

You can examine these in your coutUnitaire array which I have Dimmed as
Variant so it can hold the error value.

--
Regards,
Tom Ogilvy


"zapatista66 " wrote in message
...
The error occurs because I have no data in some cells at this moment.
But I know that in some weeks i will fill up more cells. I don't want
to change my programmation.

mucho gracias


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