displaying an igrouping<> nested listviews

i need collect set widgets information opening layer, grouped widget.manufacturer, arrangement set nested asp.net listviews.

the problem (as distant i tell) nested listview proceed requires me figure information before controlling it, i can't figure out best proceed take. best i've means adult distant put linq query information opening covering so:

var outcome = widget getallwidgets(int widgettypeid)
             organisation widget widget.manufacturer groupedwidgets
             let widgets = widgetgroup groupedwidgets
                           name widgetgroup
             name new { manufacturer = groupedwidgets.key, widgets = widgets };

of course, opposite forms can't upheld around, doesn't work. defining tradition category hang information seems wrong proceed go. there proceed i perform organization asp.net side things? i'm controlling objectdatasources opening dal.

updated: ok, i'm formulating an opposite form anymore, instead dal passes an ienumerable<igrouping<manufacturer, widget>> asp.net page, nonetheless i listviews? i need news following html (or something graceful many it)

<ul>
  <li>foo corp.
    <ol>
      <li>baz</li>
      <li>quux</li>
    </ol>
  </li>
  <li>bar corp.
    <ol>
      <li>thinger</li>
      <li>whatsit</li>
    </ol>
  </li>
</ul>

originally, i listview within listview so:

<asp:listview id="manufacturerlistview">
    <layouttemplate>
        <ul>
            <asp:placeholder id="itemplaceholder" runat="server" />
        </ul>
    </layouttemplate>
    <itemtemplate>
        <li><asp:label text='<%# eval("manufacturer.name") %>' />
        <li>
        <asp:listview id="widgetslistview" runat="server" datasource='<%# eval("widgets") %>'>
            <layouttemplate>
                <ol>
                    <asp:placeholder runat="server" id="itemplaceholder" />
            </ol>
           </layouttemplate>
           <itemtemplate>
               <li><asp:label text='<%# eval("name") %>'></li>
           </itemtemplate>
        </asp:listview>
        </li>
    </itemtemplate>
</asp:listview>

note datasource ability widgetslistview itself databound. i register functionality but reshaping data?

this removing kind complicated, contemptible i should have only finished removed doubt instead.