master page implementation in asp.net

问题

i am using vb-2008 to create my application. i created master page in asp but i am not able to use it on other pages. i used :

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" MasterPageFile="~/Mail.Master" Inherits="webform1._Default" %>

i created master page as:

<%@ Master Language="C#" AutoEventWireup="true" CodeBehind="Mail.master.cs" Inherits="master1.Mail" %>

<!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>Untitled Page</title>
    <asp:ContentPlaceHolder ID="HeadContent" runat="server">
    </asp:ContentPlaceHolder>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:ContentPlaceHolder ID="MainContent" runat="server">
        <asp:Image ID="imghead" runat="server" ImageUrl="~/images/images1.jpeg" />
        </asp:ContentPlaceHolder>
    </div>
    </form>
</body>
</html>

but this is not showing master page on other page where it is implemented.. how can i implement the master page..

回答1:

Now you need to create ASPX pages that have the masterpage assigned and fill up the content placeholders

your new page called, for example, default.aspx will contain:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" MasterPageFile="~/Mail.Master" Inherits="webform1._Default" %>

<asp:ContentPlaceHolder ID="HeadContent" runat="server">
    <!-- Add code here to add to the HeadContent section -->
</asp:ContentPlaceHolder>

<asp:ContentPlaceHolder ID="MainContent" runat="server">
    <!-- Add code here to add to the MainContent section -->
    <asp:Image ID="imghead" runat="server" ImageUrl="~/images/images1.jpeg" />
</asp:ContentPlaceHolder>

A MasterPage only holds the PlaceHolders for where other pages will inject content.

There is a hole Video on MasterPages that you can see here:

ASP.NET WebForms Part 5: MasterPages

来源：https://stackoverflow.com/questions/6179125/master-page-implementation-in-asp-net

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ASP.NET

master-pages