Repeater显示主从表(父子表)
因为现在这个项目有很多个下拉框供客户选择的,如果是静态的添加这么多个下拉框的话,我想这是一项很大的工程,为了证明我不是有空口说白话,有图为证
这那只是一小部分的,还有n多个类似的下拉框,所以我想到了用主从表的形式把这个显示出来。主从表这个家伙之前没有用过,不知道如何用,园子里找了一下,发现Kangaroo 仁兄的这篇文章写的不错repeater显示主从表关系
在这里我想对里面的小小地方作个小小的注释,以便更好的让各位看客看明白,特别新手朋友。
Code
<%@ Page language="c#" Codebehind="WebForm1.aspx.cs" AutoEventWireup="false" Inherits="WebForm1" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>WebForm1</title>
</HEAD>
<body>
<form id="Form1" method="post" runat="server">
<FONT face="宋体">
<!-- 父Repeater开始 -->
<asp:Repeater id="Repeater1" runat="server">
<itemtemplate>
<b>
<br>
CustomerID:
<%#Eval("CustomerID") %>
</b>
<!-- 子Repeater开始 -->
<asp:repeater id="childRepeater" runat="server"
datasource='<%# ((DataRowView)Container.DataItem).Row.GetChildRows("CustOrder") %>'>
<itemtemplate>
<%#Eval("[\"ORDERID\"]")%>
<%--如果不是这样写的话,可能会出现DataBinding:“System.Data.DataRow”不包含名为“ORDERID”的属性--%>
<br>
</itemtemplate>
</asp:repeater>
<hr>
<!-- 子Repeater结束 -->
</itemtemplate>
</asp:Repeater>
<!-- 父Repeater结束 -->
</FONT>
</form>
</body>
</HTML>
<%@ Page language="c#" Codebehind="WebForm1.aspx.cs" AutoEventWireup="false" Inherits="WebForm1" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>WebForm1</title>
</HEAD>
<body>
<form id="Form1" method="post" runat="server">
<FONT face="宋体">
<!-- 父Repeater开始 -->
<asp:Repeater id="Repeater1" runat="server">
<itemtemplate>
<b>
<br>
CustomerID:
<%#Eval("CustomerID") %>
</b>
<!-- 子Repeater开始 -->
<asp:repeater id="childRepeater" runat="server"
datasource='<%# ((DataRowView)Container.DataItem).Row.GetChildRows("CustOrder") %>'>
<itemtemplate>
<%#Eval("[\"ORDERID\"]")%>
<%--如果不是这样写的话,可能会出现DataBinding:“System.Data.DataRow”不包含名为“ORDERID”的属性--%>
<br>
</itemtemplate>
</asp:repeater>
<hr>
<!-- 子Repeater结束 -->
</itemtemplate>
</asp:Repeater>
<!-- 父Repeater结束 -->
</FONT>
</form>
</body>
</HTML>
cs页面代码:
Code
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.SqlClient;
namespace HibernateTest
{
/**//// <summary>
/// WebForm1 的摘要说明。
/// </summary>
public class WebForm1 : System.Web.UI.Page
{
protected System.Web.UI.WebControls.Repeater Repeater1;
private void Page_Load(object sender, System.EventArgs e)
{
// 在此处放置用户代码以初始化页面
if(!Page.IsPostBack)
{
this.GetData();
}
}
Web 窗体设计器生成的代码#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.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void GetData()
{
SqlConnection con = new SqlConnection("server=(local);database=Northwind;uid=sa;pwd=;");
System.Data.SqlClient.SqlDataAdapter da = new SqlDataAdapter("SELECT * FROM Customers",con);
System.Data.SqlClient.SqlDataAdapter da1 =new SqlDataAdapter("SELECT * FROM ORDERS",con);
DataSet ds= new DataSet();
try
{
con.Open();
//将主表Customer添加到DataSet中
da.Fill(ds,"Customers");
//将子表Orders添加到DataSet中
da1.Fill(ds,"Orders");
//添加表Customer和表Orders之间的关系CustOrder;关联字段CustomerID
ds.Relations.Add("CustOrder",ds.Tables["Customers"].Columns["CustomerID"],ds.Tables["Orders"].Columns["CustomerID"]);
this.Repeater1.DataSource = ds;
this.Repeater1.DataBind();
}
catch(Exception ex)
{
throw ex;
}
finally
{
con.Close();
con.Dispose();
}
}
}
}
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.SqlClient;
namespace HibernateTest
{
/**//// <summary>
/// WebForm1 的摘要说明。
/// </summary>
public class WebForm1 : System.Web.UI.Page
{
protected System.Web.UI.WebControls.Repeater Repeater1;
private void Page_Load(object sender, System.EventArgs e)
{
// 在此处放置用户代码以初始化页面
if(!Page.IsPostBack)
{
this.GetData();
}
}
Web 窗体设计器生成的代码#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.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void GetData()
{
SqlConnection con = new SqlConnection("server=(local);database=Northwind;uid=sa;pwd=;");
System.Data.SqlClient.SqlDataAdapter da = new SqlDataAdapter("SELECT * FROM Customers",con);
System.Data.SqlClient.SqlDataAdapter da1 =new SqlDataAdapter("SELECT * FROM ORDERS",con);
DataSet ds= new DataSet();
try
{
con.Open();
//将主表Customer添加到DataSet中
da.Fill(ds,"Customers");
//将子表Orders添加到DataSet中
da1.Fill(ds,"Orders");
//添加表Customer和表Orders之间的关系CustOrder;关联字段CustomerID
ds.Relations.Add("CustOrder",ds.Tables["Customers"].Columns["CustomerID"],ds.Tables["Orders"].Columns["CustomerID"]);
this.Repeater1.DataSource = ds;
this.Repeater1.DataBind();
}
catch(Exception ex)
{
throw ex;
}
finally
{
con.Close();
con.Dispose();
}
}
}
}
另外一种方法实现:
Code
<asp:Repeater ID="rptLogList" runat="server">
<ItemTemplate>
<tr>
<td>
<%#Eval("title") %>
</td>
<td>
<table>
<asp:Repeater ID="rptDllList" runat="server">
<ItemTemplate>
<tr>
<td>
<%#Eval("dllname")%>
</td>
</tr>
</ItemTemplate>
</asp:Repeater>
</table>
</td>
</tr>
</ItemTemplate>
</asp:Repeater>
<asp:Repeater ID="rptLogList" runat="server">
<ItemTemplate>
<tr>
<td>
<%#Eval("title") %>
</td>
<td>
<table>
<asp:Repeater ID="rptDllList" runat="server">
<ItemTemplate>
<tr>
<td>
<%#Eval("dllname")%>
</td>
</tr>
</ItemTemplate>
</asp:Repeater>
</table>
</td>
</tr>
</ItemTemplate>
</asp:Repeater>
cs页面
Code
foreach (RepeaterItem selectitem in rptLogList.Items)
{
Repeater chld = (Repeater)selectitem.FindControl("rptDllList");
if (!daDllLog.ListDllInfoAndDLLNameByLogId(int.Parse(litLogId.Text)))
return;
chld.DataSource = daDllLog.DataTable;
chld.DataBind();
}
foreach (RepeaterItem selectitem in rptLogList.Items)
{
Repeater chld = (Repeater)selectitem.FindControl("rptDllList");
if (!daDllLog.ListDllInfoAndDLLNameByLogId(int.Parse(litLogId.Text)))
return;
chld.DataSource = daDllLog.DataTable;
chld.DataBind();
}