母版页代码：
<%@ Master Language="C#" AutoEventWireup="true" CodeBehind="user.master.cs" Inherits="母版页.user" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title></title> <asp:ContentPlaceHolder ID="head" runat="server"> </asp:ContentPlaceHolder> </head> <body style="margin:20px auto;width:50%"> <div id="header" style="background: bisque"> <span style="font-size: 30px">网页#header区域（非内容区）</span> </div> <div id="main"> <div id="leftbar" style="float: left; width: 30%; background: azure"> <div>导航菜单（非内容区）</div> <ul> <li>C++ </li> <li>JAVA </li> <li>ASP.NET </li> </ul> </div> <div id="right" style="border:2px solid blue;float: left; width: 70%; background: #eee;box-sizing: border-box;"> <asp:ContentPlaceHolder ID="TestContentPlaceHolder" runat="server"> <%--此处为内容填充区--%> </asp:ContentPlaceHolder> </div> </div> </body> </html>
内容页代码：
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="default.aspx.cs" Inherits="母版页._default" MasterPageFile="~/user.Master" %> <asp:Content ID="Content1" ContentPlaceHolderID="TestContentPlaceHolder" runat="server"> <div> 内容区 <ul> <li>C++是一门优秀的语言 </li> </ul> </div> </asp:Content>
效果如下：
