遷移的EF 5否則從EF升級後4.3

我只是想從EF 4.3升級到EF在.NET 4.0遷移的EF 5否則從EF升級後4.3

5，而當我運行使用update-database的遷移，我得到這個：

System.Data.MetadataException: Schema specified is not valid. Errors: 
(0,0) : warning 0005: Could not find schema information for the attribute 'Namespace'. 
(0,0) : warning 0005: Could not find schema information for the attribute 'Provider'. 
(0,0) : warning 0005: Could not find schema information for the attribute 'ProviderManifestToken'. 
(0,0) : warning 0005: Could not find schema information for the attribute 'Alias'. 
(0,0) : error 0010: The element Schema in namespace http://schemas.microsoft.com/ado/2009/11/edm/ssdl was unexpected for the root element. The expected Schema in one of the following namespaces: http://schemas.microsoft.com/ado/2006/04/edm/ssdl, http://schemas.microsoft.com/ado/2009/02/edm/ssdl. 
    at System.Data.Metadata.Edm.StoreItemCollection.Loader.ThrowOnNonWarningErrors() 
    at System.Data.Metadata.Edm.StoreItemCollection.Loader.LoadItems(IEnumerable`1 xmlReaders, IEnumerable`1 sourceFilePaths) 
    at System.Data.Metadata.Edm.StoreItemCollection.Init(IEnumerable`1 xmlReaders, IEnumerable`1 filePaths, Boolean throwOnError, DbProviderManifest& providerManifest, DbProviderFactory& providerFactory, String& providerManifestToken, Memoizer`2& cachedCTypeFunction) 
    at System.Data.Metadata.Edm.StoreItemCollection..ctor(IEnumerable`1 xmlReaders) 
    at System.Data.Entity.Migrations.Extensions.XDocumentExtensions.GetStoreItemCollection(XDocument model, DbProviderInfo& providerInfo) 
    at System.Data.Entity.Migrations.Infrastructure.EdmModelDiffer.Diff(XDocument sourceModel, XDocument targetModel, String connectionString) 
    at System.Data.Entity.Migrations.DbMigrator.IsModelOutOfDate(XDocument model, DbMigration lastMigration) 
    at System.Data.Entity.Migrations.DbMigrator.Upgrade(IEnumerable`1 pendingMigrations, String targetMigrationId, String lastMigrationId) 
    at System.Data.Entity.Migrations.Infrastructure.MigratorLoggingDecorator.Upgrade(IEnumerable`1 pendingMigrations, String targetMigrationId, String lastMigrationId) 
    at System.Data.Entity.Migrations.DbMigrator.Update(String targetMigration) 
    at System.Data.Entity.Migrations.Infrastructure.MigratorBase.Update(String targetMigration) 
    at System.Data.Entity.Migrations.Design.ToolingFacade.UpdateRunner.RunCore() 
    at System.Data.Entity.Migrations.Design.ToolingFacade.BaseRunner.Run() 
Schema specified is not valid. Errors: 
(0,0) : warning 0005: Could not find schema information for the attribute 'Namespace'. 
(0,0) : warning 0005: Could not find schema information for the attribute 'Provider'. 
(0,0) : warning 0005: Could not find schema information for the attribute 'ProviderManifestToken'. 
(0,0) : warning 0005: Could not find schema information for the attribute 'Alias'. 
(0,0) : error 0010: The element Schema in namespace http://schemas.microsoft.com/ado/2009/11/edm/ssdl was unexpected for the root element. The expected Schema in one of the following namespaces: http://schemas.microsoft.com/ado/2006/04/edm/ssdl, http://schemas.microsoft.com/ado/2009/02/edm/ssdl.

任何方式來獲得通過這個雖然在.NET 4.0？我知道EF 5的某些功能在.Net 4上不可用。但我無法升級到.Net 4.5或VS 2012，因爲我的SSD只有60GB，目前它只有4 GB的空閒空間，所以VS2012安裝程序獲勝不要讓我安裝（即使在其他驅動器上）。

Web.config中有參照此一：

<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=4.4.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />

來源

2013-01-03 TCM

該項目的web.config是什麼樣子的？ – IronMan84

此處的問題是，要加載的模型位於v3架構中，而.NET Framework 4中的EF組件只能理解v2架構。你是如何安裝EF5的？什麼是您使用的EntityFramework.dll的版本（我假設它是5.0.0.0，而.NET Framework 4上的EF5 EntityFramework.dll版本應該是4.4.0.0） – Pawel

@Pawel：你說得對，它是4.4。我更新了這篇文章。我通過nuget安裝它。此外，它會在第一次加載時拋出錯誤，如果我刷新頁面，它會正常工作。但是當我再次刷新頁面時，應用程序會永久掛起，我必須執行iisreset，然後循環再次重複:)。很煩人！ – TCM

看來，存儲在數據庫中的模型具有V3架構，而你使用的是.NET Framework 4的更新數據庫。 .NET Framework 4中的EF組件不理解v3（僅v2）架構，因此錯誤。我相信你需要遷移到.NET Framework 4.5和VS2012。

來源

2013-01-07 21:16:01 Pawel

遷移的EF 5否則從EF升級後4.3

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