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Making one field required based on the value of another field

Making one field required based on the value of another field

Making one field required based on the value of another field

(OP)
How do I make one field required if another field is filled in, but not required if that other field is left blank?

Thanks!

Susan M. Wagner
LAPELS
susanw@lapels.com

RE: Making one field required based on the value of another field

Add code in the On Current event procedure for the form to test the value of the control in question. If it's not null then display a message, cancel the event, and take the user to the control that must be filled in.

Private Sub Form_Current()
    If Not IsNull(Me.Control1) Then
        If IsNull(Me.Control2) Then
            MsgBox "You must enter a value for Lot #", vbInformation
            DoCmd.CancelEvent
            DoCmd.GoToControl "Control2"
            Exit Sub
        End If
    End If
End Sub

RE: Making one field required based on the value of another field

I would place any "validation Code" in an event triggered by the EXIT from the form (e.g. BEFOREUPDATE).  This allows the user to do what they want without annoying 'Stuffffff'.  If they are familiar with the requirements, they will fill in the correct (e.g. necessary) fields.  If they FAIL to do it properly, you can alert them to any/all probelms (and usually suggest crrections?) at one time.


MichaelRed
mred@duvallgroup.com
There is never time to do it right but there is always time to do it over

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