DataList嵌套DataList(4. 使用SqlDataSource实现)

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aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="DataListNesting.aspx.cs" Inherits="DataListNesting" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" ><head runat="server">    <title>DataListNesting</title></head><body><form id="form1" runat="server"><div>    <asp:DataList ID="DataList1" runat="server" OnItemDataBound="DataList1_ItemDataBound" DataSourceID="SqlDataSource1">        <ItemTemplate>        <asp:Label ID="Label1" runat="server" Text='<%# Eval("OrderID") %>'></asp:Label>        <asp:Label ID="Label2" runat="server" Text='<%# Eval("CustomerID") %>'></asp:Label>        <asp:DataList ID="DataList2" runat="server" DataSourceID="SqlDataSource2">            <ItemTemplate>                <asp:Label ID="Label1" runat="server" Text='<%# Eval("ProductID") %>'></asp:Label>                <asp:Label ID="Label2" runat="server" Text='<%# Eval("UnitPrice") %>'></asp:Label>                <asp:Label ID="Label3" runat="server" Text='<%# Eval("Quantity") %>'></asp:Label>            </ItemTemplate>        </asp:DataList>        <asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="Data Source=./sqlexpress;Initial Catalog=Northwind;Integrated Security=True" ProviderName="System.Data.SqlClient" SelectCommand="select ProductID, UnitPrice, Quantity from [Order Details] where orderID = @orderID">            <SelectParameters>                <asp:Parameter Name="orderID" />            </SelectParameters>        </asp:SqlDataSource>    </ItemTemplate>    </asp:DataList>        <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="Data Source=./sqlexpress;Initial Catalog=Northwind;Integrated Security=True" ProviderName="System.Data.SqlClient" SelectCommand="select OrderID, CustomerID from Orders"></asp:SqlDataSource></div></form></body></html>

aspx.cs

using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;public partial class DataListNesting : System.Web.UI.Page{    private void Page_Load(object sender, System.EventArgs e)    {    }    protected void DataList1_ItemDataBound(object sender, DataListItemEventArgs e)    {        SqlDataSource sqlDataSource2;        if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)        {            sqlDataSource2 = e.Item.FindControl("SqlDataSource2") as SqlDataSource;            if (sqlDataSource2 != null)            {                sqlDataSource2.SelectParameters["orderID"].DefaultValue = (e.Item.DataItem as DataRowView)["orderID"].ToString();            }        }    }}