错误在asp.net主页上是什么意思？

Question

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。有人可以看一下我的代码并指出我的错误来纠正吗？有人可以通过这个例子向我解释错误吗？

<%@ 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>

Answer 1

我建议您从<asp:Content ID="Content3"内部删除所有内容，看看是否仍然出现错误。

也请尝试以/>而不是/de>结束自定义控件>

Answer 2

<asp:scriptmanager id="ScriptManager1" runat="server" xmlns:asp="#unknown"></asp:scriptmanager>

<asp:button id="Button1" runat="server" onclick="Button1_Click" text="Button" xmlns:asp="#unknown" />

<rsweb:reportviewer id="ReportViewer2" runat="server" height="261px" width="476px" xmlns:rsweb="#unknown"></rsweb:reportviewer>