利用Repeater控件显示主-从关系数据表

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本文介绍了一种利用Repeater控件显示主-从关系数据表的方法。

原文参见:http://support.microsoft.com/default.aspx?scid=kb;en-us;306154

NestedRepeater.aspx

<%@ Import Namespace="System.Data" %>
<%@ Page language="c#" Codebehind="NestedRepeater.aspx.cs"
 AutoEventWireup="false" Inherits="eMeng.NestedRepeater" %>
<HTML>
<body>
<form runat="server">
<!-- 父Repeater开始 -->
<asp:repeater id="parentRepeater" runat="server">
  <itemtemplate>
    <b>
      <%# DataBinder.Eval(Container.DataItem,"au_id") %>
    </b>
    <br>
    <!-- 子Repeater开始 -->
    <asp:repeater id="childRepeater" runat="server"
     datasource='<%# ((DataRowView)Container.DataItem).Row.GetChildRows("myrelation") %>'>
      <itemtemplate>
        <%# DataBinder.Eval(Container.DataItem, "[\"title_id\"]")%>
        <br>
      </itemtemplate>
    </asp:repeater>
    <!-- 子Repeater结束 -->
  </itemtemplate>
</asp:repeater>
<!-- 父Repeater结束 -->
</form>
</body>
</HTML>


NestedRepeater.aspx.cs

using System;
using System.Data;
using System.Data.SqlClient;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace eMeng
{
///
/// NestedRepeater 的摘要说明。
/// 本文介绍如何利用Repeater控件显示主-从关系的表格
/// 原文参见:
/// http://support.microsoft.com/default.aspx?scid=kb;en-us;306154
///
public class NestedRepeater : System.Web.UI.Page
{
protected System.Web.UI.WebControls.Repeater parentRepeater;

public void Page_Load(object sender, EventArgs e)
{
  // 为Authors表创建 Connection 和 DataAdapter
  string cnnString = @"server=(local)\NetSDK;database=pubs; Integrated Security=SSPI;";
  SqlConnection cnn = new SqlConnection(cnnString);
  SqlDataAdapter cmd1 = new SqlDataAdapter("select * from authors",cnn);

  //创建填充 DataSet.
  DataSet ds = new DataSet();
  cmd1.Fill(ds,"authors");

  // 为Titles表创建 DataAdapter
  SqlDataAdapter cmd2 = new SqlDataAdapter("select * from titleauthor",cnn);
  cmd2.Fill(ds,"titles");

  // 创建 Authors 表和 Titles 表之间的关系.
  ds.Relations.Add("myrelation",
    ds.Tables["authors"].Columns["au_id"],
    ds.Tables["titles"].Columns["au_id"]);

  // 绑定Authors到父Repeater
  parentRepeater.DataSource = ds.Tables["authors"];
  Page.DataBind();

  cnn.Close();
  cnn.Dispose();
}
private void Page_Init(object sender, EventArgs e)
{
  InitializeComponent();
}
private void InitializeComponent()
{   
  this.Load += new System.EventHandler(this.Page_Load);
}
public NestedRepeater()
{
  Page.Init += new System.EventHandler(Page_Init);
}
}
}

 

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