repeater 显示三组数据，每组显示3条数据

<asp:Repeater ID="Repeater1" runat="server">
<ItemTemplate>
<%# Container.ItemIndex % 3 == 0 ? "<ul><li>" : "<li>"%>
<%#Eval("title")%></li>
<%# Container.ItemIndex % 3 == 2 ? "</ul>" : ""%>
</ItemTemplate>
<FooterTemplate>
<%#Repeater1.Items.Count % 3 == 0 ? "" : "</ul>"%>
</FooterTemplate>
</asp:Repeater>