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对于“System.Data.Entity.Internal.AppConfig'的类型初始值引发了异常

本文介绍了对于“System.Data.Entity.Internal.AppConfig'的类型初始值引发了异常的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我和EF5在MVC 4 ASPNET网站工作。
在当地，一切都运行得很好，但是当我将它发布到IIS，并尝试进入，我得到的错误
对于'System.Data.Entity.Internal.AppConfig'的类型初始值引发了异常。

详细的异常
发生错误创建的EntityFramework配置节处理程序：对的DbContext类型GdpSoftware.Server.Data.GdpSoftwareDbContext，GdpSoftware.Server.Data应用程序配置中指定了多个配置。每个上下文一次只能配置。 （E：\\ APP \\ web.config行104）

我检查previous问题在计算器，我已经卸载并通过的NuGet的EntityFramework重新安装，并检查每个引用它在每一个项目都是EF5。我还检查了每个项目选择的框架是4.5。

任何想法，可能是什么导致了问题？
谢谢！吉列尔莫。

的web.config 

 ＆LT;？XML版本=1.0编码=UTF-8＆GT？;
＆LT;！ - 
  有关如何配置ASP.NET应用程序的更多信息，请访问：
  http://go.microsoft.com/fwlink/?LinkId=169433
   - ＆GT;
＆LT;结构＆gt;
  ＆LT; configSections＆GT;
    ＆lt;节名称=的EntityFrameworkTYPE =System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection，的EntityFramework，版本5.0.0.0 =文化=中性公钥= b77a5c561934e089requirePermission =FALSE/＆GT;  ＆LT;！ - 有关Entity Framework的配置的详细信息，请访问http://go.microsoft.com/fwlink/?LinkID=237468  - ＆GT;＆LT; / configSections＆GT;
  ＆LT;＆是connectionStrings GT;
    ＆LT;添加名称=GdpSoftwareConnectionString的connectionString =持续安全信息= FALSE;用户ID =用户;密码=密码;初始目录=数据库名;数据源=服务器的providerName =System.Data.SqlClient的/＆GT;
    ＆LT;添加名称=GdpSoftware.Server.Data.GdpSoftwareDbContext的connectionString =GdpSoftware.Server.Data.GdpSoftwareDbContext_ConnectionString的providerName =System.Data.SqlClient的/＆GT;
    ＆LT;添加名称=GdpSoftware.Server.Ui.Web.Models.UsersContext的connectionString =GdpSoftware.Server.Ui.Web.Models.UsersContext_ConnectionString的providerName =System.Data.SqlClient的/＆GT;
  ＆LT; /＆是connectionStrings GT;
  ＆LT;＆的appSettings GT;
    ＆LT;添加键=网页：版本值=2.0.0.0/＆GT;
    ＆LT;添加键=网页：启用VALUE =FALSE/＆GT;
    ＆LT;添加关键=preserveLoginUrlVALUE =真/＆GT;
    ＆LT;添加键=ClientValidationEnabledVALUE =真/＆GT;
    ＆LT;添加键=UnobtrusiveJavaScriptEnabledVALUE =真/＆GT;
  ＆LT; /的appSettings＆GT;
  ＆LT;＆的System.Web GT;
    ＆LT;编译调试=真targetFramework =4.5/＆GT;
    ＆LT;的httpRuntime targetFramework =4.5/＆GT;
    ＆LT;身份验证模式=表格＆GT;
      ＆LT;形式loginUrl =〜/帐号/登录超时=2880/＆GT;
    ＆LT; /认证＆GT;
    ＆LT;网页和GT;
      ＆LT;＆命名空间GT;
        ＆LT;添加命名空间=System.Web.Helpers/＆GT;
        ＆LT;添加命名空间=System.Web.Mvc/＆GT;
        ＆LT;添加命名空间=System.Web.Mvc.Ajax/＆GT;
        ＆LT;添加命名空间=System.Web.Mvc.Html/＆GT;
        ＆LT;添加命名空间=System.Web.Optimization/＆GT;
        ＆LT;添加命名空间=System.Web.Routing/＆GT;
        ＆LT;添加命名空间=System.Web.WebPages/＆GT;
      ＆LT; /命名空间＆GT;
    ＆LT; /页＆GT;
    ＆LT;！ -  BEGIN  - 看错误的部署 - ＆GT;
    ＆LT;的customErrors模式=关/＆GT;
    ＆LT;！ - 完 - 看错误的部署 - ＆GT;
  ＆LT; /system.web>
  ＆LT; system.webServer＆GT;
    ＆LT;！ -  BEGIN  - 看错误的部署 - ＆GT;
    ＆LT; httpErrors errorMode =详细/＆GT;
    ＆LT; ASP scriptErrorSentToBrowser =真/＆GT;
    ＆LT;！ - 完 - 看错误的部署 - ＆GT;
    ＆LT;验证validateIntegratedModeConfiguration =FALSE/＆GT;
    ＆LT;＆处理GT;
      ＆LT;清除NAME =ExtensionlessUrlHandler-ISAPI-4.0_32bit/＆GT;
      ＆LT;清除NAME =ExtensionlessUrlHandler-ISAPI-4.0_64bit/＆GT;
      ＆LT;清除NAME =ExtensionlessUrlHandler  - 集成 -  4.0/＆GT;
      ＆LT;添加名称=ExtensionlessUrlHandler-ISAPI-4.0_32bitPATH =*。动词=GET，HEAD，POST，DEBUG，PUT，DELETE，PATCH，OPTIONS模块=IsapiModulescriptProcessor ​​=％WINDIR％\\ Microsoft.NET \\框架\\ v4.0.30319 \\ ASPNET_ISAPI.DLLpreCondition = classicMode，runtimeVersionv4.0，bitness32responseBufferLimit =0/＆GT;
      ＆LT;添加名称=ExtensionlessUrlHandler-ISAPI-4.0_64bitPATH =*。动词=GET，HEAD，POST，DEBUG，PUT，DELETE，PATCH，OPTIONS模块=IsapiModulescriptProcessor ​​=％WINDIR％\\ Microsoft.NET \\ Framework64 \\ v4.0.30319 \\ ASPNET_ISAPI.DLLpreCondition = classicMode，runtimeVersionv4.0，bitness64responseBufferLimit =0/＆GT;
      ＆LT;添加名称=ExtensionlessUrlHandler  - 集成 -  4.0PATH =*。动词=GET，HEAD，POST，DEBUG，PUT，DELETE，PATCH，OPTIONSTYPE =System.Web.Handlers.TransferRequestHandlerpreCondition =integratedMode，runtimeVersionv4.0/＆GT;
    ＆LT; /处理器＆GT;
    ＆LT; staticContent＆GT;
      ＆LT; mimeMap fileExtension =小胡子。mime类型=text / plain的/＆GT;
    ＆LT; / staticContent＆GT;
    ＆LT;安全＆GT;
      ＆LT;＆的requestFiltering GT;
        ＆LT; fileExtensions＆GT;
          ＆LT;添加fileExtension =允许=真/＆GT胡子。
        ＆LT; / fileExtensions＆GT;
      ＆LT; /＆的requestFiltering GT;
    ＆LT; /安全＆GT;
  ＆LT; /system.webServer>
  ＆LT;＆运行GT;
    ＆LT; assemblyBinding的xmlns =瓮：架构 - 微软COM：asm.v1＆GT;
      ＆LT; dependentAssembly＆GT;
        ＆LT; assemblyIdentity名称=System.Web.Helpers公钥=31bf3856ad364e35/＆GT;
        ＆LT; bindingRedirect oldVersion =1.0.0.0-2.0.0.0NEWVERSION =2.0.0.0/＆GT;
      ＆LT; / dependentAssembly＆GT;
      ＆LT; dependentAssembly＆GT;
        ＆LT; assemblyIdentity名称=System.Web.Mvc公钥=31bf3856ad364e35/＆GT;
        ＆LT; bindingRedirect oldVersion =0.0.0.0-4.0.0.0NEWVERSION =4.0.0.0/＆GT;
      ＆LT; / dependentAssembly＆GT;
      ＆LT; dependentAssembly＆GT;
        ＆LT; assemblyIdentity名称=System.Web.WebPages公钥=31bf3856ad364e35/＆GT;
        ＆LT; bindingRedirect oldVersion =1.0.0.0-2.0.0.0NEWVERSION =2.0.0.0/＆GT;
      ＆LT; / dependentAssembly＆GT;
      ＆LT; dependentAssembly＆GT;
        ＆LT; assemblyIdentity名称=Castle.Windsor公钥=407dd0808d44fbdc文化=中性/＆GT;
        ＆LT; bindingRedirect oldVersion =0.0.0.0-3.2.0.0NEWVERSION =3.2.0.0/＆GT;
      ＆LT; / dependentAssembly＆GT;
      ＆LT; dependentAssembly＆GT;
        ＆LT; assemblyIdentity名称=Newtonsoft.Json公钥=30ad4fe6b2a6aeed文化=中性/＆GT;
        ＆LT; bindingRedirect oldVersion =0.0.0.0-4.5.0.0NEWVERSION =4.5.0.0/＆GT;
      ＆LT; / dependentAssembly＆GT;
      ＆LT; dependentAssembly＆GT;
        ＆LT; assemblyIdentity名称=Microsoft.Owin.Host.SystemWeb公钥=31bf3856ad364e35文化=中性/＆GT;
        ＆LT; bindingRedirect oldVersion =0.0.0.0-1.0.0.0NEWVERSION =1.0.0.0/＆GT;
      ＆LT; / dependentAssembly＆GT;
      ＆LT; dependentAssembly＆GT;
        ＆LT; assemblyIdentity名称=Castle.Core公钥=407dd0808d44fbdc文化=中性/＆GT;
        ＆LT; bindingRedirect oldVersion =0.0.0.0-3.2.0.0NEWVERSION =3.2.0.0/＆GT;
      ＆LT; / dependentAssembly＆GT;
    ＆LT; / assemblyBinding＆GT;
  ＆LT; /运行＆GT;
  ＆LT;＆的EntityFramework GT;
    ＆LT; defaultConnectionFactory TYPE =System.Data.Entity.Infrastructure.SqlConnectionFactory，的EntityFramework/＆GT;
    ＆LT;＆上下文GT;
      ＆LT;上下文类型=GdpSoftware.Server.Data.GdpSoftwareDbContext，GdpSoftware.Server.DatadisableDatabaseInitialization =真＆GT;
        ＆LT; databaseInitializer type=\"System.Data.Entity.MigrateDatabaseToLatestVersion`2[[GdpSoftware.Server.Data.GdpSoftwareDbContext, GdpSoftware.Server.Data]，[GdpSoftware.Server.Data.Migrations.Configuration，GdpSoftware.Server.Data]，的EntityFramework/＆GT;
      ＆LT; /背景＆GT;
    ＆LT; /背景＆GT;
  ＆LT; /＆的EntityFramework GT;
＆LT; /结构＆gt;


解决方案

我需要通过defaultConnectionFactory改变是SqlConnectionFactory而不是默认的

 ＆LT;＆的EntityFramework GT;
    ＆LT; defaultConnectionFactory TYPE =System.Data.Entity.Infrastructure.SqlConnectionFactory，的EntityFramework＆GT;
      ＆LT;＆参数GT;
        ＆LT;参数值=＆LT;我的连接字符串＆gt;中/＆GT;
      ＆LT; /参数＆GT;
    ＆LT; / defaultConnectionFactory＆GT;
  ＆LT; /＆的EntityFramework GT;

http://blogs.msdn.com/b/davidobando/archive/2012/08/14/changing-ef-s-default-provider-from-localdb-to-sql-server.aspx

I'm working with EF5 in a MVC 4 aspnet website.Locally, everything works just fine, but when I publish it to the IIS and try to enter, I get the error"The type initializer for 'System.Data.Entity.Internal.AppConfig' threw an exception."

Detailed exceptionAn error occurred creating the configuration section handler for entityFramework: Configuration for DbContext type 'GdpSoftware.Server.Data.GdpSoftwareDbContext, GdpSoftware.Server.Data' is specified multiple times in the application configuration. Each context can only be configured once. (E:\App\web.config line 104)

I checked previous question in StackOverflow, and I already uninstalled and reinstalled through Nuget EntityFramework and checked that each reference to it in each project is EF5. I also checked that the selected framework in each project is 4.5.

Any idea, What might be causing the issue?Thanks! Guillermo.

web.config

<?xml version="1.0" encoding="utf-8"?>
<!--
  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=5.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />

  <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 --></configSections>
  <connectionStrings>
    <add name="GdpSoftwareConnectionString" connectionString="Persist Security Info=False;User ID=user;Password=password;Initial Catalog=databasename;Data Source=server" providerName="System.Data.SqlClient" />
    <add name="GdpSoftware.Server.Data.GdpSoftwareDbContext" connectionString="GdpSoftware.Server.Data.GdpSoftwareDbContext_ConnectionString" providerName="System.Data.SqlClient"/>
    <add name="GdpSoftware.Server.Ui.Web.Models.UsersContext" connectionString="GdpSoftware.Server.Ui.Web.Models.UsersContext_ConnectionString" providerName="System.Data.SqlClient"/>
  </connectionStrings>
  <appSettings>
    <add key="webpages:Version" value="2.0.0.0" />
    <add key="webpages:Enabled" value="false" />
    <add key="PreserveLoginUrl" value="true" />
    <add key="ClientValidationEnabled" value="true" />
    <add key="UnobtrusiveJavaScriptEnabled" value="true" />
  </appSettings>
  <system.web>
    <compilation debug="true" targetFramework="4.5" />
    <httpRuntime targetFramework="4.5" />
    <authentication mode="Forms">
      <forms loginUrl="~/Account/Login" timeout="2880" />
    </authentication>
    <pages>
      <namespaces>
        <add namespace="System.Web.Helpers" />
        <add namespace="System.Web.Mvc" />
        <add namespace="System.Web.Mvc.Ajax" />
        <add namespace="System.Web.Mvc.Html" />
        <add namespace="System.Web.Optimization" />
        <add namespace="System.Web.Routing" />
        <add namespace="System.Web.WebPages" />
      </namespaces>
    </pages>
    <!-- BEGIN - TO SEE THE ERRORS ON THE DEPLOYMENT-->
    <customErrors mode="Off" />
    <!-- END - TO SEE THE ERRORS ON THE DEPLOYMENT-->
  </system.web>
  <system.webServer>
    <!-- BEGIN - TO SEE THE ERRORS ON THE DEPLOYMENT-->
    <httpErrors errorMode="Detailed" />
    <asp scriptErrorSentToBrowser="true" />
    <!-- END - TO SEE THE ERRORS ON THE DEPLOYMENT-->
    <validation validateIntegratedModeConfiguration="false" />
    <handlers>
      <remove name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" />
      <remove name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" />
      <remove name="ExtensionlessUrlHandler-Integrated-4.0" />
      <add name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness32" responseBufferLimit="0" />
      <add name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness64" responseBufferLimit="0" />
      <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
    </handlers>
    <staticContent>
      <mimeMap fileExtension=".mustache" mimeType="text/plain" />
    </staticContent>
    <security>
      <requestFiltering>
        <fileExtensions>
          <add fileExtension=".mustache" allowed="true" />
        </fileExtensions>
      </requestFiltering>
    </security>
  </system.webServer>
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-4.0.0.0" newVersion="4.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Castle.Windsor" publicKeyToken="407dd0808d44fbdc" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-3.2.0.0" newVersion="3.2.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-4.5.0.0" newVersion="4.5.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Owin.Host.SystemWeb" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-1.0.0.0" newVersion="1.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Castle.Core" publicKeyToken="407dd0808d44fbdc" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-3.2.0.0" newVersion="3.2.0.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
  <entityFramework>
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" />
    <contexts>
      <context type="GdpSoftware.Server.Data.GdpSoftwareDbContext, GdpSoftware.Server.Data" disableDatabaseInitialization="true">
        <databaseInitializer type="System.Data.Entity.MigrateDatabaseToLatestVersion`2[[GdpSoftware.Server.Data.GdpSoftwareDbContext, GdpSoftware.Server.Data], [GdpSoftware.Server.Data.Migrations.Configuration, GdpSoftware.Server.Data]], EntityFramework" />
      </context>
    </contexts>
  </entityFramework>
</configuration>
解决方案

I needed to change by defaultConnectionFactory to be SqlConnectionFactory instead of the default

<entityFramework>
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework">
      <parameters>
        <parameter value="<My Connection String>" />
      </parameters>
    </defaultConnectionFactory>
  </entityFramework>

http://blogs.msdn.com/b/davidobando/archive/2012/08/14/changing-ef-s-default-provider-from-localdb-to-sql-server.aspx

这篇关于对于“System.Data.Entity.Internal.AppConfig'的类型初始值引发了异常的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！

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