DataList嵌套的重点是要在外层DataList的ItemDataBound事件中用e.Item.FindControl方法来找到嵌套层DataList的id,编写嵌套层DataList的绑定数据源事件，具体代码如下：
'--------前台代码DLNested.aspx：
<%@ Page language="c#" Codebehind="DLNested.aspx.cs" AutoEventWireup="false" Inherits="Example.DateListNested" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>DateListNested</title>
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
<style type="text/css">TD { FONT-SIZE: 12px; COLOR: #000000; FONT-FAMILY: "宋体" }
</style>
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<TABLE id="Table1" style="Z-INDEX: 101; LEFT: 8px; POSITION: absolute; TOP: 8px" cellSpacing="1"
cellPadding="1" width="100%" border="1" bordercolordark=white>
<tr>
<td><a href="Default.aspx">DataList分页、编辑实例</a></td>
</tr>
<TR>
<TD>
<asp:DataList id="DataList1" runat="server" RepeatColumns="3">
<ItemTemplate>
<FONT face="宋体">
<TABLE cellSpacing="1" cellPadding="1" width="100%" border="1" bordercolordark=white>
<TR>
<TD><FONT face="宋体" color="red">
<asp:Label id=Label1 runat="server" Text='<%# Container.ItemIndex + ":" + DataBinder.Eval(Container.DataItem,"C_TypeName")%>' >
</asp:Label>
<asp:Label id="lblTypeId" runat="server" Visible=False Text='<%# DataBinder.Eval(Container.DataItem,"I_TypeID")%>' >
</asp:Label>
</FONT></TD>
</TR>
<TR>
<TD>
<asp:DataList id="DataList2" runat="server">
<ItemTemplate>
<TABLE cellSpacing="1" cellPadding="1" width="100%" border="1" bordercolordark=white>
<TR>
<TD>
<asp:Label id=Label2 runat="server" Text='<%# DataBinder.Eval(Container.DataItem,"C_Name") %>'>
</asp:Label></TD>
</TR>
</TABLE>
<FONT face="宋体"&
