how to find repeater inside another repeater

I want to find repeater inside the another repeater. But i m not able to find. My code is

<asp:Repeater ID="rep_test" runat="server">
     <ItemTemplate>
           <div id='h<%# DataBinder.Eval(Container, 开发者_如何学运维"ItemIndex") %>' class="header" onclick='ToggleDisplay(<%# DataBinder.Eval(Container, "ItemIndex") %>);'>
                    <%#DataBinder.Eval(Container.DataItem, "ID")%>
           </div>
           <div id='d<%# DataBinder.Eval(Container, "ItemIndex") %>' class="details">
           <asp:Repeater ID="rep_hello" runat="server">
                <ItemTemplate>
                    <%#DataBinder.Eval(Container.DataItem, "batchid")%><br />
                    <%#DataBinder.Eval(Container.DataItem, "ts")%><br />
                </ItemTemplate>
           </asp:Repeater>
                <%--    <%#DataBinder.Eval(Container.DataItem, "batchid")%><br />
                    <%#DataBinder.Eval(Container.DataItem, "ts")%><br />--%>
            </div>
     </ItemTemplate>
</asp:Repeater>

If you put a repeater inside an item template of another repeater that means that every item of the main repeater (rep_test) will have a repeater inside it (rep_hello). So you actually need to find the repeater inside a repeaterItem. You can iterate trough all the nested repeaters like this:

foreach (RepeaterItem item in rep_test)
        Repeater rptr = (Repeater)item.FindControl("rep_hello");

Example:

In ItemDataBound event handler:

protected void rep_test_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
  if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType ==  ListItemType.AlternatingItem)
  {
    (e.Item.FindControl("rep_hello") as Repeater).DataSource = YourOtherDataSource;      
  }
}

You can try using .FindControl(). In VB, it would be something like

Dim rpt as Repeater = rep_test.FindControl("rep_hello")

Usually when I see this kind of thing, you want to perform some event on all of the inner repeaters. What I usually do is handle this kind of thing inside the ItemDataBound event.

Add an OnItemDataBound attribute to your Repeater.

<asp:Repeater ID="rep_test" runat="server" 
OnItemDataBound="rep_test_ItemDataBound">

Then in the back end, add a handler, with a FindControl call.

protected void rptBasket_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
    if (e.Item.ItemType == ListItemType.Item || 
        e.Item.ItemType == ListItemType.AlternatingItem)
    {
         Repeater innerRepeater = (Repeater)e.Item.FindControl("rep_hello");
         // Now your have your repeater...do what you want with it.
    }
}