将上下文相关帮助添加到现有Windows窗体应用程序的好方法？

Private _ToolTipList As New List(Of ToolTip)

<Extension()> _
Public Function CreateForm(ByVal formType As Type) As Form
  If (formType Is Nothing) Then
    Throw New ArgumentNullException("formType")
  End If
  If (Not GetType(Form).IsAssignableFrom(formType)) Then
    Throw New InvalidOperationException _
        (String.Format("The type '{0}' is not a form.", formType.FullName))
  End If

  Dim ctor = formType.GetConstructor(New Type() {})
  If (ctor Is Nothing) Then
    Throw New InvalidOperationException _
        (String.Format _
            ("The type '{0}' does not have a public default constructor.", _
            formType.FullName))
  End If

  Dim frm As Form = ctor.Invoke(New Object() {})
  Dim toolTip As New ToolTip(New Container())
  LoadToolTipData(toolTip, frm)
  _ToolTipList.Add(toolTip)

  Return frm

End Function

Private Sub LoadToolTipData(ByVal toolTip As ToolTip, _
                            ByVal ctrl As Control, _
                   Optional ByVal parentHierarchy As String = "")

  Dim currentHierarchy = parentHierarchy & "." & ctrl.Name
  Dim toolTipText = LoadDataFromDb(currentHierarchy)
  If Not String.IsNullOrEmpty(toolTipText) Then
    toolTip.SetToolTip(ctrl, toolTipText)
  End If

  For Each c As Control In ctrl.Controls
    LoadToolTipData(toolTip, c, currentHierarchy)
  Next

End Sub

Private Function LoadDataFromDb(ByVal key As String) As String
  Return String.Empty
End Function