Mega Code Archive
Nested master page
<![CDATA[
<%@ page language="C#" MasterPageFile="~/Default.master" %>
<asp:content id="Content1" contentplaceholderid="Content1" runat=server>
<asp:label runat="server" id="Label1"
text="Child label1" font-bold="true"/>
<br>
</asp:content>
<asp:content id="Content2" contentplaceholderid="Content2" runat=server>
<asp:label runat="server" id="Label2"
text="Child label2" font-bold="true"/>
</asp:content>
File: Default.master
<%@ master language="C#" MasterPageFile="~/MasterDefault.master" %>
<asp:content id="Content1" contentplaceholderid="MainContent" runat="server">
<asp:panel runat="server" id="panelMain" backcolor="lightyellow">
<h2>Child master</h2>
<asp:panel runat="server" id="panel1" backcolor="lightblue">
<p>This is childmaster content.</p>
<asp:contentplaceholder id="Content1" runat="server" />
</asp:panel>
<asp:panel runat="server" id="panel2" backcolor="pink">
<p>This is childmaster content.</p>
<asp:contentplaceholder id="Content2" runat="server" />
</asp:panel>
</asp:panel>
</asp:content>
File: MasterDefault.master
<%@ Master Language="C#" %>
<HTML>
<BODY>
<form id="Form1" runat=server>
<h1>Parent Master</h1>
<p>
<font color=red>This is Parent-master content.</font>
</P>
<asp:contentplaceholder id="MainContent" runat=server/>
</form>
</HTML>
</BODY>
]]>