问EntityFramework错误:提供程序没有返回ProviderManifest实例
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提问于 2014-10-24 07:53:06

回答 9查看 28.8K关注 0票数 17

我的项目是在VisualStudio2012forWebExpress的ASP.NET MVC4中使用C#。

在编译我的项目时，我有以下错误：

提供程序没有返回ProviderManifest实例。无法确定存储版本；需要有效的存储连接或版本提示。

经过几个小时的搜索，我相信错误与实体框架有某种联系。我还在这里找到了一个解决此错误的方法：http://forums.devart.com/viewtopic.php?f=32&t=25748

解决方法建议我将ProviderManifestToken="2012"字段更改为ProviderManifestToken="2008"文件中的.edmx文件。

这样做之后，错误就消失了。但是，当我运行该项目时，我遇到了另一个问题，一个运行时错误：

无法加载文件或程序集“Microsoft.Data.Edm”或其依赖项之一。所定位的程序集的清单定义与程序集引用不匹配。(HRESULT例外: 0x80131040) ===预绑定状态信息=== 日志: DisplayName = Microsoft.Data.Edm (部分) WRN:为程序集提供了部分绑定信息： WRN:程序集名称: Microsoft.Data.Edm @ Domain :2 WRN:当只提供程序集显示名称的一部分时，会发生部分绑定。 WRN:这可能会导致绑定程序加载错误的程序集。 WRN:建议为程序集提供完整的文本标识， WRN:这包括简单的名称、版本、区域性和公钥令牌。 WRN:有关此问题的更多信息和常见解决方案，请参见白皮书http://go.microsoft.com/fwlink/?LinkId=109270。 LOG: Appbase = file:///C:/Users/Pedro/Documents/Visual Studio 2012/Projects/Dockis/Development/Dockis/Dockis/ 日志:初始2012\Projects\Dockis\Development\Dockis\Dockis\bin =C：\ PrivatePath \Pedro\Documents\Visual 调用程序集：(未知)。LOG:此绑定在默认加载上下文中启动。日志:使用应用程序配置文件: C:\Users\Pedro\Documents\Visual 2012\Projects\Dockis\Development\Dockis\Dockis\web.config 日志:使用主机配置文件: C:\Users\Pedro\Documents\IISExpress\config\aspnet.config 日志:使用C:\Windows\Microsoft.NET\Framework\v4.0.30319\config\machine.config.中的机器配置文件日志:此时未应用于引用的策略(私有、自定义、部分或基于位置的程序集绑定)。日志:尝试下载新的URL file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/Temporary ASP.NET Files/vs/78aa89a1/af9f01eb/Microsoft.Data.Edm.DLL. 日志:尝试下载新的URL file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/Temporary ASP.NET Files/vs/78aa89a1/af9f01eb/Microsoft.Data.Edm/Microsoft.Data.Edm.DLL. 日志:尝试下载新的URL file:///C:/Users/Pedro/Documents/Visual Studio 2012/Projects/Dockis/Development/Dockis/Dockis/bin/Microsoft.Data.Edm.DLL. 日志:使用应用程序配置文件: C:\Users\Pedro\Documents\Visual 2012\Projects\Dockis\Development\Dockis\Dockis\web.config 日志:使用主机配置文件: C:\Users\Pedro\Documents\IISExpress\config\aspnet.config 日志:使用C:\Windows\Microsoft.NET\Framework\v4.0.30319\config\machine.config.中的机器配置文件 LOG:在应用程序配置文件中找到重定向: 5.6.0.0重定向到5.6.1.0。日志:政策后参考: Microsoft.Data.Edm，Version=5.6.1.0，Culture=neutral，PublicKeyToken=31bf3856ad364e35 日志:尝试下载新的URL file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/Temporary ASP.NET Files/vs/78aa89a1/af9f01eb/Microsoft.Data.Edm.DLL. 日志:尝试下载新的URL file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/Temporary ASP.NET Files/vs/78aa89a1/af9f01eb/Microsoft.Data.Edm/Microsoft.Data.Edm.DLL. 日志:尝试下载新的URL file:///C:/Users/Pedro/Documents/Visual Studio 2012/Projects/Dockis/Development/Dockis/Dockis/bin/Microsoft.Data.Edm.DLL. WRN:比较程序集名称导致不匹配:生成编号错误:未能完成程序集的设置(hr = 0x80131040)。探测结束了。

堆栈跟踪：

[FileLoadException: Could not load file or assembly 'Microsoft.Data.Edm' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)]

[FileLoadException: Could not load file or assembly 'Microsoft.Data.Edm, Version=5.6.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)]
   System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +0
   System.Reflection.RuntimeAssembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +34
   System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, RuntimeAssembly reqAssembly, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +152
   System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean forIntrospection) +77
   System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +16
   System.Reflection.Assembly.Load(String assemblyString) +28
   System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +38

[ConfigurationErrorsException: Could not load file or assembly 'Microsoft.Data.Edm, Version=5.6.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)]
   System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +752
   System.Web.Configuration.CompilationSection.LoadAllAssembliesFromAppDomainBinDirectory() +218
   System.Web.Configuration.CompilationSection.LoadAssembly(AssemblyInfo ai) +130
   System.Web.Compilation.BuildManager.GetReferencedAssemblies(CompilationSection compConfig) +170
   System.Web.Compilation.BuildManager.GetPreStartInitMethodsFromReferencedAssemblies() +91
   System.Web.Compilation.BuildManager.CallPreStartInitMethods(String preStartInitListPath, Boolean& isRefAssemblyLoaded) +285
   System.Web.Compilation.BuildManager.ExecutePreAppStart() +153
   System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters, PolicyLevel policyLevel, Exception appDomainCreationException) +521

[HttpException (0x80004005): Could not load file or assembly 'Microsoft.Data.Edm, Version=5.6.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)]
   System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +9950728
   System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +101
   System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +254