我的母版页中出现内容控件错误。我没有打开任何标签,但仍然收到此错误。有人可以查看我的代码并指出我的错误以进行更正吗?有人可以通过这个例子解释我的错误吗?
<%@ Master Language="C#" MasterPageFile="~/Data.master" AutoEventWireup="true" CodeFile="IMS.master.cs" Inherits="ims_IMS" %>
<%@ MasterType VirtualPath="~/AData.master" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="contenttop" Runat="Server">
</asp:Content>
<asp:Content ID="Content3" ContentPlaceHolderID="content" Runat="Server">
<div id="section-header" class="clear">
<h2 id="section-title">IMS </h2>
</div>
<de:PageSecurity ID="ps1" runat="server" ContentControlId="contentwrapper" AllowdeStaff="True" AllowTechss="False" AllowPeoples="False" AllowDistrict="True" ErrorMessage="You cannot access this page." />
<div id="section-content">
<asp:ContentPlaceHolder ID="sectioncontent" Runat="Server">
</asp:ContentPlaceHolder>
</div>
</asp:Content>