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Old December 10th, 2007, 01:49 AM
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Default VS2008 Master page error in <asp:contentPlaceHolde

I am using the Wrox Beginning ASP.NET 2.0 with C# book to learn ASP 2 using Visual Studio 2008 beta 2.

Using the book on page 38, I created the About.aspx page. when I switch from Source to Design mode I get the following error:

 
Quote:
quote:Master Page error
Quote:
The page has one or more <asp:Content> controls that do not correspond with <asp:ContentPlaceHolder> controls in the Master Page.
mainContent
Here is the code from the Master page named "site.master":

Code:
<%@ Master Language="C#" AutoEventWireup="true" CodeFile="site.master.cs" Inherits="MasterPage" Debug="true" %>

<!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>Wrox United</title>
    <link rel="stylesheet" type="text/css" href="site.css" runat="server" />
    <asp:ContentPlaceHolder id="head" runat="server">
    </asp:ContentPlaceHolder>
    <style type="text/css">
        .style1
        {
            font-size: x-small;
        }
    </style>
</head>
<body>
    <form id="MainForm" runat="server">
    <div id="header">
        <div style="width: 100px; height: 100px" id="logo">
            <h1>Wrox United</h1>
        </div>
    </div>
    <div id="sidebar">
        <h3>Navigation</h3>
    </div>
    <div id="content">
        <div style="width: 100px; height: 100px">
            <asp:ContentPlaceHolder id="mainContent" runat="server">

            </asp:ContentPlaceHolder>
        </div>
    <div id="footer">
        <p class="style1">Copyright &copy; JT Consulting, LLC 2007 - 2008 </p>
        <p class="style1">All content copyright &copy; Wrox Press and its subsidiaries 2006. </p>
        <p class="right">
            Website designed by
            <a href="http://www.jtconsulting.us" title="croak">JT Consulting, LLC</a>
        </p>
    </div>
    </form>
</body>
</html>
Here is the code from the About.aspx page:
Code:
<%@ Page Language="C#" MasterPageFile="~/site.master" AutoEventWireup="true" CodeFile="about.aspx.cs" Inherits="about" Title="Untitled Page" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="mainContent" Runat="Server">
</asp:Content>
I tried retyping the "mainContent" and got the same results.
I tried copying and pasting the "mainContent" and got the same results.
I tried renaming mainContent to a different name "mainContent1" in both places and got the same results.
I tried deleting the About.aspx page and recreating and got the same results.

What am I doing wrong?

Thanks in Advance,

Jesse Tutterrow
P.S. Sorry to post such long listings, but I don't know what line could be causing the problem.
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Old December 10th, 2007, 12:17 PM
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Default

Follow-up on my post.

After encountering the problem Sunday night, I exited VS2008, and shutdown the virutal machine. This morning when I booted and entered VS2008 the problem had disappeared. I can cause the problem at will, and always solve it by exiting and starting VS2008.

So, this must be a feature from Microsoft. I wonder if purchasers of Visual Studio are charged extra for this feature? Yes this is a sarcastic comment. As a beginner to ASP I don't really need to spend over 3 hours trying to debug something like this, and assuming that I had made a mistake.

Now I need to figure out how to report this to Microsoft.

Thanks, Jesse



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