母版页.aspx代码如下：
<%@ Master Language="C#" AutoEventWireup="true" CodeFile="MasterPage.master.cs" Inherits="MasterPage" %>
<!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>
<asp:TextBox ID="txt_result" runat="server"></asp:TextBox>
<asp:Button ID="btn_mst" runat="server" Text="Master" οnclick="btn_mst_Click" />
<asp:ContentPlaceHolder id="ContentPlaceHolder1" runat="server">
</asp:ContentPlaceHolder>
</div>
</form>
</body>
</html>
母版页.aspx.cs代码如下：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class MasterPage : System.Web.UI.MasterPage
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btn_mst_Click(object sender, EventArgs e)
{
string s1 = ((TextBox)ContentPlaceHolder1.FindControl("txt_1")).Text;
string s2 = ((TextBox)ContentPlaceHolder1.FindControl("txt_2")).Text;
txt_result.Text = s1 + s2;
}
}
子页.aspx
<%@ Page Title="" Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<asp:TextBox ID="txt_1" runat="server"></asp:TextBox><asp:TextBox ID="txt_2"
runat="server"></asp:TextBox><asp:Button ID="btn_sub" runat="server"
Text="sub" οnclick="btn_sub_Click" />
</asp:Content>
子页.aspx.cs代码如下：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class Default2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btn_sub_Click(object sender, EventArgs e)
{
((TextBox)Master.FindControl("txt_result")).Text = txt_1.Text + txt_2.Text;
}
}
效果如下：
会出现如下ID问题，在CSS控制中不方便。
解决办法：
母版页.aspx代码如下：
<%@ Master Language="C#" AutoEventWireup="true" CodeFile="MasterPage3.master.cs" Inherits="MasterPage3" %>
<!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>
<style type="text/css">
div.model{ border:1px solid black; padding:4px; margin:3px;}
</style>
</head>
<body>
<form id="form1" runat="server">
<div>
<div id="yetou" class="model" runat="server">页头</div>
<div id="daohang" class="model" runat="server">导航</div>
<div id="xinwen" class="model" runat="server">新闻</div>
<asp:ContentPlaceHolder id="ContentPlaceHolder1" runat="server">
</asp:ContentPlaceHolder>
<div id="yewei" class="model" runat="server">页尾</div>
</div>
</form>
</body>
</html>
子页.aspx代码如下：
<%@ Page Title="" Language="C#" MasterPageFile="~/MasterPage3.master" AutoEventWireup="true" CodeFile="Default4.aspx.cs" Inherits="Default4" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<p>子页内容</p>
</asp:Content>
效果如下：
将子页.aspx.cs代码修改为：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class Default4 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
Master.FindControl("xinwen").Visible = false;
}
}
效果如下：
上述例子的理念是母版页中尽可能的考虑全面，可以通过子页设置是否显示某些模块
