<asp:ListView runat="server" ID="RightMenuItems"
  ItemPlaceholderID="PlaceHolder2">
  <LayoutTemplate>
      <asp:PlaceHolder runat="server" ID="PlaceHolder2" /> 
  </LayoutTemplate>

  <ItemTemplate>
    <h1><%# Eval("Title") %></h1>

      <asp:ListView runat="server" ID="subMenu"
        ItemPlaceholderID="PlaceHolder3"
          DataSource='<%# Eval("Links") %>'>
          <LayoutTemplate>
            <ul>
              <asp:PlaceHolder runat="server" ID="PlaceHolder3" /> 
            </ul>
          </LayoutTemplate>
          <ItemTemplate>
            <li>
              <a href='<%# Eval("Url") %>'><%# Eval("Text") %></a>
            </li>
          </ItemTemplate>
      </asp:ListView>
  </ItemTemplate>
</asp:ListView>

Public Class DataCache
{
    public IEnumerable GetCustomers()
    {
        NorthwindDataContext db = new NorthwindDataContext();
        DataLoadOptions opt = new DataLoadOptions();
        opt.LoadWith<Customer>(c => c.Orders);
        opt.LoadWith<Order>(o => o.Order_Details);
        db.LoadOptions = opt;

        var data = from c in db.Customers
                   select new { c.CompanyName, c.Orders };

        return data.ToList();
    }

    public int GetCustomersCount()
    {
        // Return the number of customers
        NorthwindDataContext db = new NorthwindDataContext();
        return db.Customers.Count();  
    }

    public IEnumerable GetCustomers(int maxRows, int startRowIndex)
    {
        if (maxRows < 0)
            return GetCustomers();

        NorthwindDataContext db = new NorthwindDataContext();
        DataLoadOptions opt = new DataLoadOptions();
        opt.LoadWith<Customer>(c => c.Orders);
        opt.LoadWith<Order>(o => o.Order_Details);
        db.LoadOptions = opt;

        var data = (from c in db.Customers
                    select new { 
                      c.CompanyName, 
                      c.Orders 
                    }).Skip(startRowIndex).Take(maxRows);
        return data.ToList();
    }
}
NorthwindDataContext db = new NorthwindDataContext();
DataLoadOptions opt = new DataLoadOptions();
opt.LoadWith<Customer>(c => c.Orders);
opt.LoadWith<Order>(o => o.Order_Details);
db.LoadOptions = opt;

<asp:ListView ID="ListView1" runat="server" 
  DataSourceID="ObjectDataSource1"
  ItemPlaceholderID="lvItemPlaceHolder">

  <LayoutTemplate>
    <asp:PlaceHolder runat="server" ID="lvItemPlaceHolder" />
  </LayoutTemplate>

  <ItemTemplate>
    <asp:Panel runat="server" ID="panelCustomerInfo"
      cssclass="customerInfo"> 
      <%# Eval("CompanyName") %>
    </asp:Panel>    
    <asp:panel runat="server" ID="panelCustomerDetails"
      cssclass="customerDetails">
      <asp:ListView runat="server" 
        DataSource='<%# Eval("Orders") %>' 
        ItemPlaceholderID="lvOrdersItemPlaceHolder">

        <LayoutTemplate>
          <ul>
            <asp:PlaceHolder runat="server" 
              ID="lvOrdersItemPlaceHolder" />
          </ul>
        </LayoutTemplate>

        <ItemTemplate>
          <li>
            Order #<%# Eval("OrderID") %> 
            <span class="orderDate"> 
              placed on <%#
              ((DateTime)Eval("OrderDate")).ToString
              ("ddd, dd MMM yyyy") %> 
            </span>
            <span class="orderEmployee"> 
              managed by <b><%# Eval("Employee.LastName") %></b>
            </span>
            <asp:GridView runat="server" 
              DataSource='<%# Eval("Order_Details") %>' 
              SkinID="OrderDetailsGridSkin" >
            </asp:GridView>
          </li>
        </ItemTemplate>
      </asp:ListView>
    </asp:panel>
  </ItemTemplate>
</asp:ListView>

namespace Samples.Controls
{
  public class ListViewItemCreatingEventArgs : EventArgs
  {
    private int _dataItemIndex;
    private int _displayIndex;

    public ListViewItemCreatingEventArgs(int dataItemIndex,
                                         int displayIndex) {
      _dataItemIndex = dataItemIndex;
      _displayIndex = displayIndex;
    }

    public int DisplayIndex {
      get { return _displayIndex; }
      set { _displayIndex = value; }
    }

    public int DataItemIndex {
      get { return _dataItemIndex; }
      set { _dataItemIndex = value; }
    }
  }

  public class ListView : System.Web.UI.WebControls.ListView
  {
    public event EventHandler<ListViewItemCreatingEventArgs>
                                               ItemCreating;

    protected override ListViewDataItem CreateDataItem(int
                           dataItemIndex, int displayIndex) {
      // Fire a NEW event: ItemCreating
      if (ItemCreating != null)
        ItemCreating(this, new ListViewItemCreatingEventArgs
                             (dataItemIndex, displayIndex));

      // Call the base method
      return base.CreateDataItem(_dataItemIndex, displayIndex);
    }
  }
}

namespace Samples.Controls
{
  public class ListViewItemCreatingEventArgs : EventArgs
  {
    private int _dataItemIndex;
    private int _displayIndex;

    public ListViewItemCreatingEventArgs(int dataItemIndex,
                                         int displayIndex) {
      _dataItemIndex = dataItemIndex;
      _displayIndex = displayIndex;
    }

    public int DisplayIndex {
      get { return _displayIndex; }
      set { _displayIndex = value; }
    }

    public int DataItemIndex {
      get { return _dataItemIndex; }
      set { _dataItemIndex = value; }
    }
  }

  public class ListView : System.Web.UI.WebControls.ListView
  {
    public event EventHandler<ListViewItemCreatingEventArgs>
     ItemCreating;

    private int _displayIndex;
    private bool _shouldInstantiate = false;

    protected override void InstantiateItemTemplate(Control container,
     int displayIndex) {
      if (_shouldInstantiate) {
        base.InstantiateItemTemplate(container, displayIndex);
        _shouldInstantiate = false;
      }
    }

    protected override ListViewDataItem CreateDataItem(int
     dataItemIndex, int displayIndex) {
      // Fire a NEW event: ItemCreating
      if (ItemCreating != null)
        ItemCreating(this, new
          ListViewItemCreatingEventArgs(dataItemIndex,
          displayIndex));

      // Cache for later
      _displayIndex = displayIndex;

      // Call the base method
      return base.CreateDataItem(_dataItemIndex, displayIndex);
    }

    protected override void OnItemCreated(ListViewItemEventArgs e) {
      base.OnItemCreated(e);

      // You can proceed with template instantiation now
      _shouldInstantiate = true;
      InstantiateItemTemplate(e.Item, _displayIndex);
    }
  }
}

void ListView1_ItemCreated(object sender, ListViewItemEventArgs e)
{
    // Grab a reference to the data item
    ListViewDataItem currentItem = (e.Item as ListViewDataItem);
    Employee emp = (Employee) currentItem.DataItem;
    if (emp == null)
        return;

    // Apply your logic here
    string titleOfCourtesy = emp.TitleOfCourtesy.ToLower();
    string url = "forgentlemen.ascx";
    if (titleOfCourtesy == "ms." || titleOfCourtesy == "mrs.")
        url = "forladies.ascx";

    // Set the item template to use
    Samples.ListView ctl = (sender as Samples.Controls.ListView);
    ctl.ItemTemplate = Page.LoadTemplate(url);
}