How do I solve the error 'System.Web.UI.MasterPage' does not contain a definition for

I have two master pages and a content page. On my local machine this code works, but once I uploaded to the server I got the following error:

Compilation Error Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.

Compiler Error Message: CS1061: 'System.Web.UI.MasterPage' does not contain a definition for 'DivWidth' and no extension method 'DivWidth' accepting a first argument of type 'System.Web.UI.MasterPage' could be found (are you missing a using directive or an assembly reference?)

Source Error:

Line 84:
Line 85:
Line 86: this.Master.Master.DivWidth = 955; Line 87: SimpleElementCollection restrictedIds = new SimpleElementCollection(); Line 88: restrictedIds.Add(new SimpleElement(priceModifierPriceTypeId));

Source File: c:\Inetpub\testsite\shop\Default.aspx.cs Line: 86

Base Masterpage cocde:

public partial class global : System.Web.UI.MasterPage
{
public int DivWidth { get; set; } 

    protected void Page_Load(object sender, EventArgs e)
    {
            SetBodyClass();
          if (DivWidth < 1)
        {
            DivWidth = 768;
        }
    }

Base Masterpage aspx:

<%@ Master Language="C#" AutoEventWireup="true" CodeFile="global.master.cs" Inherits="global" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US" dir="ltr">
<head id="Head1" runat="server" dir="ltr" lang="en-us" profile="http://dublincore.org/documents/dcq-html/">
<meta http-equiv="X-UA-Compatible" content="IE=7" />
<title>page title</title>
  <meta http-equiv="content-type" content="text/html; charset=UTF-8" />
  <meta http-equiv="content-type" content="en-US" />
  <meta http-equiv="content-language" content="en-us" />

  <link rel="Bookmark" href="#content" title="Page Content" type="text/html" />
  <link rel="Bookmark" href="#primary-navigation" title="Site Navigation" type="text/html" />

  <link href="css/screen/global.css" rel="stylesheet" type="text/css" media="screen"  />
<link href="css/print/print.css" rel="stylesheet" type="text/css" media="print" />


<script src="<%=ResolveUrl("~/javascript/jquery-1.2.6.min.js")%>" type="text/javascript"></script>
<script src="<%=ResolveUrl("~/javascript/jquery.clearonfocus.js")%>" type="text/javascript"></script>
<script src="<%=ResolveUrl("~/javascript/modalControl.js")%>" type="text/javascript"></script>
<asp:ContentPlaceHolder ID="headPlaceholder" runat="server" />
  <!--[if IE]><link href="css/screen/ie/ie.css" rel="stylesheet" type="text/css" media="screen"  /><![endif]-->
  <!--[if IE 6]><link href="css/screen/ie/ie-6.css" rel="stylesheet" type="text/css" media="screen"  /><![endif]-->

] 
</head>
<body id="Body" runat="server">
<div id="main">
        <div id="main-inner">
            <div id="content" style="width:<%=DivWidth%>px;"><div id="content-top"></div><div class="content-inner"><asp:ContentPlaceHolder ID="contentPlaceHolder" runat="server" /><asp:ContentPlaceHolder ID="BelowLeftRightMainContent" runat="server" /></div> </div>

</body>
</html>

Second Master Page:

<%@ Master Language="C#" MasterPageFile="~/global.master" AutoEventWireup="false" CodeFile="shopFalcon.master.cs" Inherits="shopFalcon" %>
<%@ Register TagPrefix="FALCON" TagName="FeatureProducts" Src="~/FalconShopRightHand.ascx" %>
<%@ Register TagPrefix="FALCON" TagName="ProductSearch" Src="~/FalconProductSearch.ascx" %>
<%@ Register TagPrefix="FALCON" TagName="AbuseText" Src="~/FalconAbuseLinkDisplay.ascx" %>

<asp:Content ID="Content1" ContentPlaceHolderID="headPlaceholder" Runat="Server">
</asp:Content>

nothing in the code behind cept empty code behind

My content page:

<%@ Page Language="C#" MasterPageFile="~/shop.master" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="shopFalcon_Default" Title="Shop Homepage" %>
<%@ MasterType VirtualPath="~/shop.master"%>


<asp:Content ID="Content7" ContentPlaceHolderID="leftColPlaceHolder" Runat="Server">
<asp:Image ID="Image1" runat="server" ImageAlign="Right" ImageUrl="~/images/Free+Shipping+01.jpg" CssClass="img"/>
<h1>Shop Anytime, anywhere. </h1>

<div id="shopByBrandDiv">
    </asp:Content>

My code behind:

  protected void Page_Load(object sender, EventArgs e)
        {


            this.Master.Master.DivWidth = 955;
    }

Again this works in Visual Studio using the built in web server but delpoying to the production server running IIS6 I get that error stated above.

Any ideas?

public int DivWidth { get; set; }

Does this actually get implemented?

Ok, here is the thing, this works sometimes and then when I add another property or recompile it would give me an error. it turns out it is compiler issue. To get around the issue, I had to create a App_Code directory under the root and made a class. When I get the error telling me there is no DivWidth defined, I simple make a code change in the class I created and the site compiles in the proper order. It took opening a case with MS, who was not very helpful, for me to find this workaround. Hope this helps someone else who runs into this strange issue.

this worked for me:

<%@ MasterType VirtualPath="~/MasterPage.master" %>

in .aspx file

来源：https://stackoverflow.com/questions/4159454/how-do-i-solve-the-error-system-web-ui-masterpage-does-not-contain-a-definitio

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ASP.NET

master-pages