http://ejaconsulting.com/nestedrepea...edRepeater.txt -----Original Message-----
Doh! The HTML has all been rendered . . .
Right click on this link and select 'Save target as ..'
to get the code in a text file.
Thanks - Ed
-----Original Message-----
I have created an ASP.Net page - see code below -
adaptedfrom http://support.microsoft.com/default.aspx?
scid=kb;EN-US;306154 which contains 3 repeaters nested inside of
each other.
When it executes it throws an InvalidCastExce ption when
getting the datasource of the grandchild repeater.
However this datasource is fine for the child repeater -
remove the grandchild repeater from the page and it
runsas expected.
Can anyone tell me what is wrong with the datasource of
the grandchild repeater? What should it be?
Thanks - Ed
HTML file:
==========
<code>
<%@ Page language="c#"
Codebehind="N estedRepeater.a spx.cs"
AutoEventWire up="false"
Inherits="Nes tedRepeater.Nes tedRepeater" %>
<%@ Import Namespace="Syst em.Data" %>
<html>
<head>
<title>Nest ed Repeater Example</title>
</head>
<body>
<form runat="server" id="Form1">
<!-- start parent repeater -->
<asp:repeat er id="parentRepea ter" runat="server">
<itemtemplate >
<b>Company : <%# DataBinder.Eval
(Container.Da taItem,"Company Name") %></b><br/>
<!-- start child repeater -->
<asp:repeater id="childRepeat er" datasource='<%#
((DataRowView )Container.Data Item).Row.GetCh ildRows
("Customers_O rders") %>' runat="server">
<itemtemplate >
- Order Date : <%# DataBinder.Eval
(Container.Da taItem, "[\"OrderDate\ "]")%><br/>
<!-- start grandchild repeater -->
<asp:repeater id="grandChildR epeater"
datasource='< %# ((DataRowView)
Container.Dat aItem).Row.GetC hildRows
("Orders_Orde rDetails") %>' runat="server">
<itemtemplate >
- - Product ID : <%#
DataBinder.Ev al(Container.Da taItem, "[\"ProductID\ "]")%<br>
</itemtemplate>
</asp:repeater>
<!-- end grandchild repeater -->
</itemtemplate>
</asp:repeater>
<!-- end child repeater -->
</itemtemplate>
</asp:repeater>
<!-- end parent repeater -->
</form>
</body>
</html>
</code>
Code behind file:
============= ====
<code>
using System;
using System.Data;
using System.Data.Sql Client;
using System.Web;
using System.Web.Sess ionState;
using System.Web.UI;
using System.Web.UI.W ebControls;
namespace NestedRepeater
{
public class NestedRepeater : System.Web.UI.P age
{
protected
System.Web.UI .WebControls.Re peater parentRepeater;
public NestedRepeater( )
{
Page.Init += new
System.EventH andler(Page_Ini t);
}
public void Page_Load(objec t sender,
EventArgs e)
{
//Create the connection and
DataAdapter for the Customers (parent) table.
SqlConnection cnn = new
SqlConnection ("Data Source=(local); Integrated
Security=SSPI ;Trusted_Connec tion=yes;Initia l
Catalog=North wind;");
SqlDataAdapter daCustomers = new
SqlDataAdapte r("select CustomerID, CompanyName from
Customers order by CompanyName", cnn);
//Create a second DataAdapter for
the Orders (child) table.
SqlDataAdapter daOrders = new
SqlDataAdapte r("select OrderID, CustomerID, OrderDate
from Orders order by OrderDate", cnn);
//Create a third DataAdapter for
the OrderDetails (grandchild) table.
SqlDataAdapter daOrderDetails =
new SqlDataAdapter( "select OrderID, ProductID from
[OrderDetails] order by OrderID", cnn);
//Create and fill the DataSet.
DataSet ds = new DataSet();
DataTable dtCustomers =
ds.Tables.Add ("Customers" );
DataTable dtOrders = ds.Tables.Add
("Orders");
DataTable dtOrderDetails =
ds.Tables.Add ("OrderDetails" );
daCustomers.Fil l(dtCustomers);
daOrders.Fill(d tOrders);
daOrderDetails. Fill
(dtOrderDetai ls);
//Create the relation between the
Customers and Orders tables.
ds.Relations.Ad d
("Customers_O rders", ds.Tables["Customers"].Columns
["CustomerID "], ds.Tables["Orders"].Columns
["CustomerID "]);
//Create the relation between the
Orders and OrderDetails tables.
ds.Relations.Ad d
("Orders_Orde rDetails", ds.Tables["Orders"].Columns
["OrderID"], ds.Tables["OrderDetai ls"].Columns
["OrderID"]);
//Bind the Authors table to the
parent Repeater control, and call DataBind.
parentRepeater. DataSource =
ds.Tables["Customers"];
Page.DataBind() ;
//Close the connection.
cnn.Close();
}
private void Page_Init(objec t sender,
EventArgs e)
{
InitializeCompo nent();
}
private void InitializeCompo nent()
{
this.Load += new
System.EventH andler(this.Pag e_Load);
}
}
}
</code>
.
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