MasterPage事件使用

1。创建一个MasterPage 命名为MasterPage2.master，并在页面中放入测试控件 DropDownList1 和XmlDataSource1

代码

<%@ Master Language="C#" AutoEventWireup="true" CodeFile="MasterPage2.master.cs" Inherits="MasterPage2" %>

<!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></title>
    <asp:ContentPlaceHolder id="head" runat="server">
    </asp:ContentPlaceHolder>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        母版页中的内容  <asp:ContentPlaceHolder id="ContentPlaceHolder1" runat="server"> </asp:ContentPlaceHolder>
         <asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="True"
                DataSourceID="XmlDataSource1" DataTextField="text"
            DataValueField="value"
           >
            </asp:DropDownList>
        <asp:XmlDataSource ID="XmlDataSource1" runat="server"
            DataFile="~/DropDownListData.xml"></asp:XmlDataSource>
    </div>
    </form>
</body>
</html>

2.创建一个内容页面Default.aspx,并放入测试控件DropDownList1，XmlDataSource1

代码

<%@ Page Title="" Language="C#" MasterPageFile="~/MasterPage2.master" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<%@ MasterType VirtualPath="~/MasterPage2.master" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
    <asp:XmlDataSource ID="XmlDataSource2" runat="server"
    DataFile="~/DropDownListData.xml"></asp:XmlDataSource>
内容页：<asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="True"
    DataSourceID="XmlDataSource2" DataTextField="text" DataValueField="value"
        onselectedindexchanged="DropDownList1_SelectedIndexChanged">
</asp:DropDownList>
</asp:Content>

以上值得注意的是要加上<%@ MasterType VirtualPath="~/MasterPage2.master" %>, 这样内容页面就可以使用Master类中自定义的方法、属性。。

3.MasterPage2.aspx.cs

代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class MasterPage2 : System.Web.UI.MasterPage
{
    protected override void OnInit(EventArgs e)
    {
        base.OnInit(e);
        DropDownList1.SelectedIndexChanged += new EventHandler(DropDownList1_SelectedIndexChanged); //注册SelectedIndexChanged事件
    }

    void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
    {
        OnContentChange(this,new CommandEventArgs(DropDownList1.SelectedItem.Text,DropDownList1.SelectedItem.Value)); //触发内容页面注册事件
    }

    protected void Page_Load(object sender, EventArgs e)
    {

    }

    public void ChangeIndex(int index)  //
    {
        DropDownList1.SelectedIndex = index;
    }

    public event CommandEventHandler OnContentChange;  //定义事件，供内容页面注册

}

4.Default.aspx.cs

代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected override void OnInit(EventArgs e)
    {
        base.OnInit(e);
        Master.OnContentChange += new CommandEventHandler(ChangeDropDownList); //注册事件
    }

    protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
    {
        Master.ChangeIndex(DropDownList1.SelectedIndex);//调用MasterPage页面方法
    }

    void ChangeDropDownList(object send, CommandEventArgs e)  //当MasterPage中 DropDownList1的SelectIndexChanage触发此方法
    {
        string selectvalue = e.CommandArgument.ToString();
        DropDownList1.SelectedValue = selectvalue;
    }
}

附XML文件：

代码

<?xml version="1.0" encoding="utf-8" ?>
<root>
  <Empolyer value="1" text="lirong"/>
  <Empolyer value="2" text="aaaaaa"/>
  <Empolyer value="3" text="bbbbbb"/>

posted on 2010-01-11 14:18 泡泡饭阅读(313) 评论(0) 编辑收藏举报

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MasterPage事件使用