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Impossible de charger le fichier ou l'assembly System.Web.WebPages.Razor, Version = 3.0.0.0 ou l'une de ses dépendances.

J'utilise les frameworks MVC 5, WCF et Unity dans mon application. 

Je reçois une erreur ci-dessous lorsque j'exécute le service WCF:

Server Error in '/' Application.

Could not load file or Assembly 'System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.IO.FileNotFoundException: Could not load file or Assembly 'System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.

Source Error: 

An unhandled exception was generated during the execution of the current web request. Information regarding the Origin and location of the exception can be identified using the exception stack trace below.

Assembly Load Trace: The following information can be helpful to determine why the Assembly 'System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' could not be loaded.


WRN: Assembly binding logging is turned OFF.
To enable Assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1.
Note: There is some performance penalty associated with Assembly bind failure logging.
To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].

Stack Trace: 


[FileNotFoundException: Could not load file or Assembly 'System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.]
   System.Web.Mvc.PreApplicationStartCode.Start() +0

[InvalidOperationException: The pre-application start initialization method Start on type System.Web.Mvc.PreApplicationStartCode threw an exception with the following error message: Could not load file or Assembly 'System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified..]
   System.Web.Compilation.BuildManager.InvokePreStartInitMethodsCore(ICollection`1 methods, Func`1 setHostingEnvironmentCultures) +556
   System.Web.Compilation.BuildManager.InvokePreStartInitMethods(ICollection`1 methods) +132
   System.Web.Compilation.BuildManager.CallPreStartInitMethods(String preStartInitListPath, Boolean& isRefAssemblyLoaded) +102
   System.Web.Compilation.BuildManager.ExecutePreAppStart() +153
   System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters, PolicyLevel policyLevel, Exception appDomainCreationException) +516

[HttpException (0x80004005): The pre-application start initialization method Start on type System.Web.Mvc.PreApplicationStartCode threw an exception with the following error message: Could not load file or Assembly 'System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified..]
   System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +9882460
   System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +101
   System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +254

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.33440

J'ai ajouté System.Web.WebPages.Razor, Version = 3.0.0.0 dans le projet WCF, toujours la même erreur persiste.

Est-ce que quelqu'un sait comment résoudre cette erreur?

asp.net-mvcwcfinversion-of-controlunity-container
25
user2934829

Assurez-vous que votre projet cible .net 4.5, que toutes les références sont valides et que Web AspNet.WebPages. * Se trouvent dans le dossier bin (Release/Debug).

valid refs

Vous pouvez également essayer de réinstaller les packages de nuget Microsoft.AspNet.WebPages à l'aide de cette commande dans la console du gestionnaire de packages.

> Update-Package –reinstall Microsoft.AspNet.WebPages
97
Cybermaxs

Je rencontrais l'erreur exacte ici (parmi un couple d'autres erreurs de référence manquantes) sur mon système Win10 x64. Mon problème était (je crois), a été causé par la désinstallation de quelque chose d'ajout/suppression qui a arraché d'autres DLL.

Après avoir recherché une solution sur Internet, ce qui a finalement fonctionné pour moi a été la réponse proposée: https://stackoverflow.com/a/27785999/692124

Téléchargez et installez Web Pages Version 2

0
Mike