ASP.NET MasterPageFile causing error_问答_开发者

开发者 https://www.devze.com 2023-01-11 11:58 出处：网络

I\'m trying to use a master page in my website.I created a page and then created the master.I then added the tag MasterPageFile=\"~/master\".I\'m guessing that I need to do s开发者_JAVA技巧omething to

I'm trying to use a master page in my website. I created a page and then created the master. I then added the tag MasterPageFile="~/master". I'm guessing that I need to do s开发者_JAVA技巧omething to my main page, because I've now started getting the error:

The page contains markup that is not valid when attached to a master page

My main page is as follows:

<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" MasterPageFile="~/my.master" %>

<!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">
<body>
     <form id="form1" runat="server">
     <div>

     </div>
     </form>
</body>
</html>

I tried deleting the tag thinking that this might be the issue. Can anyone point me in the right direction?

You need to change your body to content sections. The master page works with contentplaceholders: your content pages need to provide the content for these placeholders. See the msdn page on this topic.

Quoted from that link above, your master page could contain the following:

<td><asp:contentplaceholder id="Main" runat="server" /></td>

Which the content page would fill by supplying the following

<% @ Page Language="C#" MasterPageFile="~/Master.master" Title="Content Page 1" %>
<asp:Content ID="Content1" ContentPlaceHolderID="Main" Runat="Server">
    Main content.
</asp:Content>

Note that I included the main declaration at the top of the content page.

the pages inhering master page should have a <asp:Content as their root. this means no html tag no doctype etc.