Question

I have three combo boxes: cbo_prefRoom1, cbo_prefRoom2, cbo_prefRoom3.

On form initialisation cbo_prefRoom2 and cbo_prefRoom3 are disabled.

When the user selects an option in cbo_prefRoom1 then it enables cbo_prefRoom2.
When the user selects an option in cbo_prefRoom2 then it enables cbo_prefRoom3.

What I would like to do is add an instance in which if the user selects the option No Preference in cbo_prefRoom1 then what happens is cbo_prefRoom2 and cbo_prefRoom3 are updated with the same value of No Preference. Then cbo_prefRoom2 and cbo_prefRoom3 are disabled until the user changes the option of No Preference in cbo_prefRoom1.

There is also a second instance of this, if the user selects the option No Preference in cbo_prefRoom2 then cbo_prefRoom3 is updated with the same value of No Preference and disabled. Then cbo_prefRoom3 is disabled until the user changes the option of No Preference in cbo_prefRoom2.

How do I go about achieving this?

Private Sub cbo_prefRoom1_Change()

' When user selects an option in cbo_prefRoom1 then cbo_prefRoom2 is enabled
    With cbo_prefRoom2
        .Enabled = Len(cbo_prefRoom1.Value) > 0
            If Not .Enabled Then
                .ListIndex = -1
            End If
    End With

End Sub

Private Sub cbo_prefRoom2_Change()

' When user selects an option in cbo_prefRoom2 then cbo_prefRoom3 is enabled
    With cbo_prefRoom3
        .Enabled = Len(cbo_prefRoom2.Value) > 0
            If Not .Enabled Then
                .ListIndex = -1
            End If
    End With

End Sub

Answer 1

Something like this? You could also take the same idea and move it to the event for cbo_prefRoom2 click event.

If cbo_prefRoom1.Value = "No Preference" Then
  cbo_prefRoom2.value = "No Preference"
  cbo_prefRoom3.value = "No Preference"
Else
  With cbo_prefRoom2
    .Enabled = Len(cbo_prefRoom1.Value) > 0
    If Not .Enabled Then
      .ListIndex = -1
    End If
  End With
End If