IIS 7 中带有 EF 6.1.3 的 ASP.NET 应用程序

Question

我们刚刚设置了一个新的 PCI 兼容服务器，当我将我的 asp.net 应用程序部署到它时，我收到以下错误消息：

具有不变名称“System.Data.SqlClient”的 ADO.NET 提供程序未在计算机或应用程序配置文件中注册，或者无法加载。有关详细信息，请参阅内部异常。

我仔细检查了我的配置文件，卸载了 EF 并在所有项目中重新安装了它。部署后我在 bin 文件夹中看到了 DLL（我们将 CI 与团队城市和章鱼一起使用）。我检查了几乎所有在线帖子，以寻找没有成功的解决方案。

当我将此应用程序部署到不符合 PCI 的服务器时，它可以正常工作。我不知道是什么原因造成的！

web.config

<configSections>
  <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false"/>
    </configSections>

<!-- Connection String -->
<add name="BondedBuilderModel" connectionString="data source=SqlServer;initial catalog=mydb;integrated security=false;User Id=user; Password =pass;MultipleActiveResultSets=True;App=EntityFramework" providerName="System.Data.SqlClient"/>
     

<!-- Provider -->
    <entityFramework>
        <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework">
            <parameters>
                <parameter value="System.Data.SqlClient"/>
            </parameters>
        </defaultConnectionFactory>
        <providers>
            <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer"/>
        </providers>
    </entityFramework>

** 异常 **

The ADO.NET provider with invariant name 'System.Data.SqlClient' is either not registered in the machine or application config file, or could not be loaded. See the inner exception for details.
  at System.Data.Entity.Infrastructure.DependencyResolution.DefaultProviderFactoryResolver.<GetService>b__0(ArgumentException e, String n)
  at System.Data.Entity.Infrastructure.DependencyResolution.DefaultProviderFactoryResolver.GetService(Type type, Object key, Func`3 handleFailedLookup)
  at System.Data.Entity.Infrastructure.DependencyResolution.DefaultProviderFactoryResolver.GetService(Type type, Object key)
  at System.Data.Entity.Infrastructure.DependencyResolution.CachingDependencyResolver.<>c__DisplayClass1.<GetService>b__0(Tuple`2 k)
  at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
  at System.Data.Entity.Infrastructure.DependencyResolution.CachingDependencyResolver.GetService(Type type, Object key)
  at System.Data.Entity.Infrastructure.DependencyResolution.ResolverChain.<>c__DisplayClass3.<GetService>b__0(IDbDependencyResolver r)
  at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext()
  at System.Linq.Enumerable.FirstOrDefault[TSource](IEnumerable`1 source, Func`2 predicate)
  at System.Data.Entity.Infrastructure.DependencyResolution.ResolverChain.GetService(Type type, Object key)
  at System.Data.Entity.Infrastructure.DependencyResolution.RootDependencyResolver.GetService(Type type, Object key)
  at System.Data.Entity.Infrastructure.DependencyResolution.ResolverChain.<>c__DisplayClass3.<GetService>b__0(IDbDependencyResolver r)
  at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext()
  at System.Linq.Enumerable.FirstOrDefault[TSource](IEnumerable`1 source, Func`2 predicate)
  at System.Data.Entity.Infrastructure.DependencyResolution.ResolverChain.GetService(Type type, Object key)
  at System.Data.Entity.Infrastructure.DependencyResolution.CompositeResolver`2.GetService(Type type, Object key)
  at System.Data.Entity.Infrastructure.DependencyResolution.DbDependencyResolverExtensions.GetService[T](IDbDependencyResolver resolver, Object key)
  at System.Data.Entity.Internal.LazyInternalConnection.CreateConnectionFromProviderName(String providerInvariantName)
  at System.Data.Entity.Internal.LazyInternalConnection.InitializeFromConnectionStringSetting(ConnectionStringSettings appConfigConnection)
  at System.Data.Entity.Internal.LazyInternalConnection.TryInitializeFromAppConfig(String name, AppConfig config)
  at System.Data.Entity.Internal.LazyInternalConnection.Initialize()
  at System.Data.Entity.Internal.LazyInternalConnection.get_ProviderName()
  at System.Data.Entity.Internal.LazyInternalContext.get_ProviderName()
  at System.Data.Entity.Internal.DefaultModelCacheKeyFactory.Create(DbContext context)
  at System.Data.Entity.Internal.LazyInternalContext.InitializeContext()
  at System.Data.Entity.Internal.InternalContext.GetEntitySetAndBaseTypeForType(Type entityType)
  at System.Data.Entity.Internal.Linq.InternalSet`1.Initialize()
  at System.Data.Entity.Internal.Linq.InternalSet`1.get_InternalContext()
  at System.Data.Entity.Internal.Linq.InternalSet`1.ActOnSet(Action action, EntityState newState, Object entity, String methodName)
  at System.Data.Entity.Internal.Linq.InternalSet`1.Add(Object entity)
  at System.Data.Entity.DbSet`1.Add(TEntity entity)
  at BondedBuilders.Data.LoggerData.LogError(String errorType, String errorMessage, String stackTrace) in c:\TeamCity\buildAgent\work\f206d6cc22a03ea8\source\web\BondedBuilders.Data\LoggerData.cs:line 31
  at BondedBuilders.Data.LoggerData.LogError(Exception exception) in c:\TeamCity\buildAgent\work\f206d6cc22a03ea8\source\web\BondedBuilders.Data\LoggerData.cs:line 11
  at BondedBuilders.WebClient.Templates.Main.HandleSystemError(Exception ex) in c:\TeamCity\buildAgent\work\f206d6cc22a03ea8\source\web\BondedBuilders.WebClient\Templates\Main.Master.cs:line 18
  at BondedBuilders.WebClient.Default.ButtonContinue_Click(Object sender, EventArgs e) in c:\TeamCity\buildAgent\work\f206d6cc22a03ea8\source\web\BondedBuilders.WebClient\Default.aspx.cs:line 95
  at System.Web.UI.WebControls.LinkButton.OnClick(EventArgs e)
  at System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument)
  at System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument)
  at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument)
  at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)
  at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

Answer 1

对于遇到此问题的任何人，终于想通了。
在 machine.config 文件中：

32 位

%windir%\Microsoft.NET\Framework\[version]\config\machine.config 

64 位

%windir%\Microsoft.NET\Framework64\[version]\config\machine.config 

定义了一个 dbproviders 部分，但紧随其后又定义了一个像这样<DbProviderFactories/>

删除第二个后，应用程序开始运行，并且上述错误停止显示。
问题仍然是为什么机器配置会定义这两个部分。没有人手动编辑过这个文件！！