主题：指定用户为“入库员”、“开单员”时，对2个窗口控件"选择出库", "删除出库明细"，不可见，应该怎么写？

For Each c As WinForm.Control In e.Form.Controls
    If Typeof c Is WinForm.Button Then
        Select Case c.name
            Case "选择出库", "删除出库明细"
                If User.Name = "入库员" Then
                    c.Visible = False
                End If
            Case Else
                c.Visible = True
        End Select
    End If
Next