Allow Duplicate Entries in a Combo Box

[AXESMI59]

have a project in which I am entering Serial Numbers and Date codes into a Combo box. Serial numbers are all different. However, they could each have the same Date Code. Each Serial Number has a corresponding Date Code which I then write to a table using VBA. When I try to enter a duplicate date code, it automatically finds the duplicate and will not allow me to add it again to that combo box. How do I configure that combo box so I can enter the same date code multiple times?

I use a Command button to Add the data to both combo boxes which also adds the values to 2 listboxes.

' 9-26-2008
' Modified: 1-19-2009 , Combined two buttons
Dim frm As Form
' SN
Dim ctl As Control
Dim ctl1 As Control
' DC
Dim ctl2 As Control
Dim ctl3 As Control

On Error GoTo cmdAddSNErr

Set frm = Forms!frmPrimary_User_Interface '!frmPrimary_User_Interface.Form
' SN
Set ctl = frm!lstSN
Set ctl1 = frm!cboOrigSerialNum
' DC
Set ctl2 = frm!lstDC
Set ctl3 = frm!cboOrigDateCodes

'intSNDCct = ctl.ListCount
' 2-14-2009
' Did the user enter the Quantity Rejected?
If txtOrigQtyRej.Value <> "" Then
    ' Yes
    ' Did the user enter both a SN & DC
    If ctl1.Value <> "" And ctl3.Value <> "" Then
        ' Yes
        ' Data entry for all of the serial numbers in this rejection notice
        If intQtyRej <> ctl.ListCount And intQtyRej <> ctl2.ListCount Then             ' Make sure user doesn't add more serial numbers than Quantity Rejected
            
            'Me.lstSN.SetFocus
            ' SN
            ctl.AddItem ctl1.Value
            ctl1.Value = ""
            
            'ctl1.Value = ""    ' Clear for next entry
            ' DC
            
            ctl2.AddItem ctl3.Value
            
            ctl3.Value = ""                  ' Clear for next entry
        
            lblSNCount.Caption = "SN: " & ctl.ListCount & "/" & ctl2.ListCount & " of REJ: " & intQtyRej
            intSNDCct = ctl.ListCount
        Else                                                ' User exceeded Quantity Rejected
            
            MsgBox "Serial Numbers or Date Codes entered Exceeds Quantity Rejected value [" & intQtyRej & "]" & vbCrLf & "This last Serial Number or Date Code is ignored!", vbExclamation, "Serial Number(s) entry"
            Exit Sub
        End If
    Else ' No
            MsgBox "You must enter a Serial Number and a Date Code or enter '0' if none exists!" & vbCrLf & "Please make sure you enter both before attempting to add!", vbExclamation, "SN/DC entry: Missing Data"
            cboOrigSerialNum.Value = ""
            cboOrigDateCodes.Value = ""
            cboOrigSerialNum.SetFocus
            Exit Sub
    End If
Else ' No
        MsgBox "You must enter the Quantity Rejected before you can add Serial Numbers and Date Codes!" & vbCrLf & "Please the Quantity Rejected!", vbExclamation, "SN/DC entry: Missing Data"
        txtOrigQtyRej.SetFocus
        Exit Sub
End If

Set frm = Nothing
' SN
Set ctl = Nothing
Set ctl1 = Nothing
' DC
Set ctl2 = Nothing
Set ctl3 = Nothing

ExitcmdAddSN:
    On Error GoTo 0
    Exit Sub
    
cmdAddSNErr:
    Select Case err.Number
        Case Else
            MsgBox err.Description & strErrSect, vbCritical, "Error " & err.Number & " in cmdAddSN"
    End Select
    Resume ExitcmdAddSN

[ChipR]

What's the control source for your combo box?

[NeoPa]

It sounds like you may have designed the table with a unique index on the date field.

If this isn't the case then please try to explain your problem more clearly with relevant error messages where appropriate.

[AXESMI59]

I resolved the issue by creating a table to place those values in. We also went with just text boxes. If the user needs to view what they entered, I have a button that will load it into a ListView control. I found a great Function for populating a ListView Control. All you have to do is call it and send an SQL Statement to it. Real slick.

Thanks for your reply.

[AXESMI59]

My project has many tables. I did not initially design the table structure. They use a Primary Key and Foreign Key. I split the database for Multi User usage.