Error 2501 Using DCount

Dec 14, 2006

In order to prevent a duplicate values in the field TR_Tripcode (text) I put the following code in the Before Update Event of TR_Tripcode.

************************************************** ********
Dim SID As String
Dim stLinkCriteria As String
Dim rsc As DAO.Recordset

Set rsc = Me.RecordsetClone

SID = Me.TR_Tripcode.Value
stLinkCriteria = "[TR_Tripcode]=" & "'" & SID & "'"

If DCount("strTripcode", "tblTripreports", stLinkCriteria) > 0 Then
'Undo duplicate entry
Me.Undo
'Message box warning of duplication
MsgBox "Warning Tripcode " _
& SID & " has already been entered." _
& vbCr & vbCr & "You will now been taken to the record.", vbInformation _
, "Duplicate Information"
'Go to record of original Tripcode number
rsc.FindFirst stLinkCriteria
Me.Bookmark = rsc.Bookmark
End If

Set rsc = Nothing
************************************************** ********
I found this code on a site and I adjusted it for my situation.
However I keep getting Error 2501 'You canceled the previous operation'.
Even after reading all posts about this subject I still haven't figured out the problem.

All suggestions will be greatly appreciated.

Catalina

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