I would like to use a GroupTemplate to separate a list of items into groups. However, I need each Group to be numbered sequentially so I can link to them and implement some JS paging. I'm binding to an IEnumerable

Here's some pseudo code. I would like the output to look like this:

<a href="#group1">Go to Group 1<a>
<a href="#group2">Go to Group 2<a>
<a href="#group3">Go to Group 3<a>

<ul id="group1">
    <li>Item</li>
    <li>Item</li>
    <li>Item</li>
</ul>
<ul id="group2">
    <li>Item</li>
    <li>Item</li>
    <li>Item</li>
</ul>
<ul id="group3">
    <li>Item</li>
    <li>Item</li>
    <li>Item</li>
</ul>

Is this easy to do in a ListView, using GroupTemplate and ItemTemplate?

<asp:ListView ID="lv" runat="server" GroupPlaceholderID="groupPlaceholder">
    <LayoutTemplate>
        <asp:PlaceHolder ID="groupPlaceholder" runat="server"></asp:PlaceHolder>
    </LayoutTemplate>
    <GroupTemplate>
        <ul id="<!-- group-n goes here -->">
            <asp:PlaceHolder ID="itemPlaceholder" runat="server"></asp:PlaceHolder>
        </ul>
    </GroupTemplate>
    <ItemTemplate>
        <li>Item</li>
    </ItemTemplate>
</asp:ListView>

I can get the number of groups to do the links at the top from the Datasource and basic math, but how do I get id="groupN" number into the template?