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Accesing the Autonumber in an Access Table

Posted on 1998-09-10
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Last Modified: 2010-04-30
I need to access the next number available in an autonumber field of an access table.  I could look for the last number used and incremente it by one, but if a record has been added and then deleted, my solution will not be valid.  Does anyone knows how to do this?
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Question by:gawilliam
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2 Comments
 
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Accepted Solution

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waty earned 200 total points
ID: 1434072
One solution is the following :

With Data1.Recordset
  .AddNew
  MsgBox !ID
  .CancelUpdate
End With
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LVL 14

Expert Comment

by:waty
ID: 1434073
Another solution is the following :

Public Function GetMaxSequence() As Long
   ' *** Get the las sequence
   
   Dim record        As Recordset
   Dim sSQL          As String
   
   On Error GoTo ERROR_GetMaxSequence
   
   sSQL = "Select Max(Counter) "
   sSQL = sSQL & "From Spool "
   
   Set record = DB.OpenRecordset(sSQL, DAO.dbOpenDynaset, DAO.dbSQLPassThrough + DAO.dbReadOnly)
   
   If (record.RecordCount <> 0) Then
      ' *** Infos found
      GetMaxSequence = CLng(ReadRecordSetField(record, 0))
   
   Else
      GetMaxSequence = 0
     
   End If
   
   record.Close
   Set record = Nothing
   
   Exit Function

ERROR_GetMaxSequence:
   LogString "Error in GetMaxSequence " & Error, LOG_TYPE_ERROR
   GetMaxSequence = 0
   
   Exit Function

End Function
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