How to increment a number on a form in Access 2010


Could anyone advice the best way I could increment a number on a form, so that I can use this unique number as a job number.

LillyCDatabase DeveloperAsked:
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ste5anSenior DeveloperCommented:
Create a unique index on your job number column in the table definition. Use Nz(DMax("JobNumber", "JobsTable"), 0) + 1 to calculate the job number. Assign the value in the forms before update event:

Private Sub Form_BeforeUpdate(Cancel As Integer)

  If Me.NewRecord Then
    Me![JobNumber] = Nz(DMax("JobNumber", "JobsTable"), 0) + 1
  End If
End Sub

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LillyCDatabase DeveloperAuthor Commented:
Thank you :)
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