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Microsoft: Access Other topics FAQ

Replacing AutoNumber

What can I use besides AutoNumber by mac318
Posted: 21 Aug 01 (Edited 15 Jul 03)

Public Function Invoice() As String
    Invoice = Format(Date, "yymmdd") & Format(Time, "hhmmss")
End Function

Although I call this function from a class module, it will work as well behind a form or standard module.  I use it to generate a unique invoice number; however, it can be used to generate a unique record key for any purpose.  The trick is to carry the time out to hundreds of a second.  A 12 character text field holds the output of the function.

The best part, by setting this as a Primary Key, it can't be changed.  The date the record was created will exist as long as the record.


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