Order of Controls in Controls Collection

Is it possible to predict the order of controls when looping through the controls collection.
Order on the form would be preferred or else Tab Order will suffice.
My code is attached

Public Function CheckForEmptyControls()
CheckForEmptyControls = True
With CodeContextObject
    Dim ctl As Control
    Dim strMissingEntryMessage As String
    strMissingEntryMessage = ""
    For Each ctl In .Controls
        If ctl.Visible And _
            (Left(ctl.Name, 3) = "txt" Or Left(ctl.Name, 3) = "cbo") _
            And ctl.Name <> "txtRelease" And ctl.Name <> "ID" And IsNull(ctl) Then
                strMissingEntryMessage = strMissingEntryMessage & Chr(13) & Chr(10) & " " & ctl.Tag
        End If
    Next ctl
    If strMissingEntryMessage <> "" Then
        CheckForEmptyControls = False
        If MsgBox("The following needs to be completed:" & Chr(13) & Chr(10) & strMissingEntryMessage, _
            vbRetryCancel, strMsgBoxTitle & ": Completing Form " & .Name) = vbCancel Then
                .Undo
                .cmdCloseForm.SetFocus
                .cmdSaveRecord.Enabled = False
        End If
    End If
End With
End Function