DataList嵌套实例
DataList嵌套实例 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'></FONT>
</ItemTemplate>
<AlternatingItemTemplate>
<TABLE cellSpacing='1' cellPadding='1' width='100%' border='1' bordercolordark=white>
<TR>
<TD><FONT face='宋体' color=#003333>
<asp:Label id='Label6' runat='server' Text='<%# DataBinder.Eval(Container.DataItem,'C_Name') %>'>
</asp:Label></font></TD>
</TR>
</TABLE>
<FONT face='宋体'></FONT>
</AlternatingItemTemplate>
</asp:DataList></TD>
</TR>
</TABLE>
</FONT>
</ItemTemplate>
<AlternatingItemTemplate>
<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=Label3 runat='server' Text='<%# Container.ItemIndex + ':' + DataBinder.Eval(Container.DataItem,'C_TypeName') %>'>
</asp:Label>
<asp:Label id='lblTypeID1' runat='server' Visible=False Text='<%# DataBinder.Eval(Container.DataItem,'I_TypeID')%>' >
</asp:Label>
</FONT></TD>
</TR>
<TR>
<TD>
<asp:DataList id='Datalist3' runat='server'>
<ItemTemplate>
<TABLE cellSpacing='1' cellPadding='1' width='100%' border='1' bordercolordark=white>
<TR>
<TD>
<asp:Label id='Label4' runat='server' Text='<%# DataBinder.Eval(Container.DataItem,'C_Name') %>'>
</asp:Label></TD>
</TR>
</TABLE>
<FONT face='宋体'></FONT>
</ItemTemplate>
<AlternatingItemTemplate>
<TABLE cellSpacing='1' cellPadding='1' width='100%' border='1' bordercolordark=white>
<TR>
<TD><FONT face='宋体' color='#003333'>
<asp:Label id='Label5' runat='server' Text='<%# DataBinder.Eval(Container.DataItem,'C_Name') %>'>
</asp:Label></font></TD>
</TR>
</TABLE>
<FONT face='宋体'></FONT>
</AlternatingItemTemplate>
</asp:DataList></TD>
</TR>
</TABLE>
</FONT>
</AlternatingItemTemplate>
</asp:DataList></TD>
</TR>
</TABLE>
</form>
</body>
</HTML>
'--------后台代码DLNested.aspx.cs：
/*----------------------------------------------------------------
// 版权所有: 亿思维软件工作室
// 网站地址: Http://www.easewe.com
// 联系方式: 87015203(QQ),easewe@126.com(Email)
// 整理日期: 2005.09.14
//----------------------------------------------------------------*/
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Data.OleDb;
namespace Example
{
/// <summary>
/// DateListNested 的摘要说明。
/// </summary>
public class DateListNested : System.Web.UI.Page
{
protected System.Web.UI.WebControls.DataList DataList1;
protected string connString;
private void Page_Load(object sender, System.EventArgs e)
{
// 在此处放置用户代码以初始化页面
connString = @'Provider=Microsoft.Jet.OleDb.4.0;Data Source=' + Request.PhysicalApplicationPath + 'DataList.mdb';
if ( !Page.IsPostBack )
{
BindData();
//BindArticle();
}
}
private void BindData()
{
string commandText = 'select * from ArticleType';
//----------
OleDbConnection conn = new OleDbConnection();
conn.ConnectionString = connString;
conn.Open();
OleDbDataAdapter da = new OleDbDataAdapter(commandText,conn);
DataSet ds = new DataSet();
da.Fill(ds,'ArticleType');
conn.Close();
//----------
DataList1.DataSource = ds.Tables['ArticleType'];
DataList1.DataBind();
}
#region Web 窗体设计器生成的代码
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.DataList1.ItemDataBound += new System.Web.UI.WebControls.DataListItemEventHandler(this.DataList1_ItemDataBound);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void DataList1_ItemDataBound(object sender, System.Web.UI.WebControls.DataListItemEventArgs e)
{
if ( e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem )
{
DataList dl = null;
Label lblTypeID = null;
if ( e.Item.ItemType == ListItemType.Item )
{
dl = (DataList)e.Item.FindControl('DataList2');
lblTypeID = (Label)e.Item.FindControl('lblTypeID');
}
else
{
dl = (DataList)e.Item.FindControl('DataList3');
lblTypeID = (Label)e.Item.FindControl('lblTypeID1');
}
string typeID = lblTypeID.Text.ToString();
string commandText = 'select * from Article';
commandText = commandText + ' Where I_TypeID=' + typeID;
//------------
OleDbConnection conn = new OleDbConnection();
conn.ConnectionString = connString;
conn.Open();
OleDbDataAdapter da = new OleDbDataAdapter(commandText,conn);
DataSet ds = new DataSet();
da.Fill(ds,'Article');
conn.Close();
//------------
dl.DataSource = ds.Tables['Article'];
dl.DataBind();
}
}
}
}
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