File: index.aspx
<%@ page language="C#" MasterPageFile="~/main.master" printcontent:master="~/print.master" %>
Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test
Test Test
Print
me!
File: main.master
<%@ master language="C#" %>
Untitled Page
File: print.master
<%@ master language="C#" %>
Untitled Page