c# - ASP.NET : Configuration Error(Server Error in '/' Application.)

Question

这个错误使我发疯!我在registration.aspx页面上工作，突然出现此错误，我花了几天时间解决它，但没有任何效果!最后，我删除registration.aspx只是为了检查没有它的项目是否仍然有效，但没有任何改变!

错误在第15行显示为红色:

> Server Error in '/' Application.
> 
> Configuration Error
> 
> Description: An error occurred during the processing of a
> configuration file required to service this request. Please review the
> specific error details below and modify your configuration file
> appropriately. 
> 
> Parser Error Message: Unrecognized element 'authentication'.
> 
> Source Error: 
> 
> 
> Line 13:   <system.web> 
> Line 14:     <pages validateRequest="false">
> Line 15:       <authentication mode="None"/> 
> Line 16:         <compilation debug="true" targetFramework="4.5"/> 
> Line 17:            <httpRuntime targetFramework="4.5"/>

web.config页面:

<?xml version="1.0"?>
<!--
  For more information on how to configure your ASP.NET application, please visit
  http://go.microsoft.com/fwlink/?LinkId=169433
  -->
<configuration>
  <configSections>
    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false"/>
  </configSections>
  <connectionStrings>
    <add name="MyDatabase" connectionString="Data Source=(LocalDB)\v11.0;AttachDbFilename=C:\Users\user\Desktop\MyWebsite\MyWebsite\MyWebsite\App_Data\MyDatabase.mdf;Integrated Security=True" providerName="System.Data.SqlClient"/>
  </connectionStrings>
  <system.web>
    <pages validateRequest="false">
      <authentication mode="None"/>
      <compilation debug="true" targetFramework="4.5"/>
      <httpRuntime targetFramework="4.5"/>
      <namespaces>
        <add namespace="System.Web.Optimization"/>
        <add namespace="Microsoft.AspNet.Identity"/>
      </namespaces>
      <controls>
        <add assembly="Microsoft.AspNet.Web.Optimization.WebForms" namespace="Microsoft.AspNet.Web.Optimization.WebForms" tagPrefix="webopt"/>
      </controls>
    </pages>
    <membership>
      <providers>
        <!--
        ASP.NET Membership is disabled in this template. Please visit the following link http://go.microsoft.com/fwlink/?LinkId=301889 to learn about the ASP.NET Membership support in this template
        -->
        <clear/>
      </providers>
    </membership>
    <profile>
      <providers>
        <!--
        ASP.NET Membership Profile is disabled in this template. Please visit the following link http://go.microsoft.com/fwlink/?LinkId=301889 to learn about the ASP.NET Membership support in this template
        -->
        <clear/>
      </providers>
    </profile>
    <roleManager>
      <!--
          ASP.NET Membership Role is disabled in this template. Please visit the following link http://go.microsoft.com/fwlink/?LinkId=301889 to learn about the ASP.NET Membership support in this template
        -->
      <providers>
        <clear/>
      </providers>
    </roleManager>
    <!--
            If you are deploying to a cloud environment that has multiple web server instances,
            you should change session state mode from "InProc" to "Custom". In addition,
            change the connection string named "DefaultConnection" to connect to an instance
            of SQL Server (including SQL Azure and SQL  Compact) instead of to SQL Server Express.
      -->
    <sessionState mode="InProc" customProvider="DefaultSessionProvider">
      <providers>
        <add name="DefaultSessionProvider" type="System.Web.Providers.DefaultSessionStateProvider, System.Web.Providers, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" connectionStringName="DefaultConnection"/>
      </providers>
    </sessionState>
    <compilation debug="true"/>
  </system.web>
  <system.webServer>
    <modules>
      <remove name="FormsAuthentication"/>
    </modules>
  </system.webServer>
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="Newtonsoft.Json" culture="neutral" publicKeyToken="30ad4fe6b2a6aeed"/>
        <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0"/>
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="WebGrease" culture="neutral" publicKeyToken="31bf3856ad364e35"/>
        <bindingRedirect oldVersion="0.0.0.0-1.5.2.14234" newVersion="1.5.2.14234"/>
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="EntityFramework" publicKeyToken="b77a5c561934e089"/>
        <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0"/>
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Owin" culture="neutral" publicKeyToken="31bf3856ad364e35"/>
        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0"/>
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Owin.Security.OAuth" culture="neutral" publicKeyToken="31bf3856ad364e35"/>
        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0"/>
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Owin.Security.Cookies" culture="neutral" publicKeyToken="31bf3856ad364e35"/>
        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0"/>
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Owin.Security" culture="neutral" publicKeyToken="31bf3856ad364e35"/>
        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0"/>
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
  <entityFramework>
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
      <parameters>
        <parameter value="mssqllocaldb"/>
      </parameters>
    </defaultConnectionFactory>
    <providers>
      <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer"/>
    </providers>
  </entityFramework>
  <appSettings>
    <!-- Beta configuration -->
    <add key="STSHost" value="auth.beta.agiv.be"/>
    <!-- See documentation https://auth.beta.agiv.be/framework/Documentation/index.html for a list of consumable services and their realms -->
    <add key="STSRealm" value="urn:agiv.be/salvador"/>
    <add key="ApplicationRealm" value="%Application realm%"/>
    <!-- Production Configuration, uncomment for use -->
    <!--
      <add key="STSHost" value="auth.agiv.be"/> 
      <add key="STSRealm" value="urn:agiv.be/sts"/>       
      <add key="ApplicationRealm" value="%Application realm%"/>
    -->
  </appSettings>
  <system.serviceModel>
    <client/>
    <behaviors>
      <endpointBehaviors>
        <behavior name="CertificateEndpointBehavior">
          <clientCredentials>
            <!-- Change this value to your certificate, and put this behavior on your client endpoint-->
            <clientCertificate findValue="%Certificate Subject Distinguished Name%" storeLocation="LocalMachine" storeName="My" x509FindType="FindBySubjectDistinguishedName"/>
          </clientCredentials>
        </behavior>
      </endpointBehaviors>
    </behaviors>
  </system.serviceModel>
</configuration>

请帮忙吗？

Answer 1

<authentication>不是<pages>的子级，应该嵌套在<system.web>中
compilation和httpRuntime也需要移出。

尝试这个

 <authentication mode="None"/>
 <compilation debug="true" targetFramework="4.5"/>
 <httpRuntime targetFramework="4.5"/>
 <pages validateRequest="false">
      <namespaces>
        <add namespace="System.Web.Optimization"/>
        <add namespace="Microsoft.AspNet.Identity"/>
      </namespaces>
      <controls>
        <add assembly="Microsoft.AspNet.Web.Optimization.WebForms" namespace="Microsoft.AspNet.Web.Optimization.WebForms" tagPrefix="webopt"/>
      </controls>
    </pages>

您还具有两个 compilation属性。删除第二个。