1

我们刚刚将我们所有的实体转移到一个新的解决方案中，以便我们可以开始开发 EF5/MVC4/net4.5。但是，我遇到了一个让我非常困惑的问题，我一直在不懈地寻找可能的原因，但一无所获。

使用 Code-First，创建了迁移，没有问题地填充了数据库表。

问题是，无论我尝试查询什么实体，我都会收到以下错误： System.Data.EntityCommandCompilationException {"The given key was not present in the dictionary."}

这是堆栈跟踪：

   at System.Collections.Generic.Dictionary`2.get_Item(TKey key)
   at System.Data.Mapping.ViewGeneration.Structures.MemberDomainMap.GetDomainInternal(MemberPath path)
   at System.Data.Mapping.ViewGeneration.QueryRewriting.FragmentQueryKB.CreateIsOfTypeCondition(MemberPath currentPath, IEnumerable`1 derivedTypes, MemberDomainMap domainMap)
   at System.Data.Mapping.ViewGeneration.QueryRewriting.FragmentQueryKB.CreateVariableConstraintsRecursion(EdmType edmType, MemberPath currentPath, MemberDomainMap domainMap, EdmItemCollection edmItemCollection)
   at System.Data.Mapping.ViewGeneration.QueryRewriting.FragmentQueryKB.CreateVariableConstraintsRecursion(EdmType edmType, MemberPath currentPath, MemberDomainMap domainMap, EdmItemCollection edmItemCollection)
   at System.Data.Mapping.ViewGeneration.ViewgenContext..ctor(ViewTarget viewTarget, EntitySetBase extent, IEnumerable`1 extentCells, CqlIdentifiers identifiers, ConfigViewGenerator config, MemberDomainMap queryDomainMap, MemberDomainMap updateDomainMap, StorageEntityContainerMapping entityContainerMapping)
   at System.Data.Mapping.ViewGeneration.ViewGenerator.CreateViewgenContext(EntitySetBase extent, ViewTarget viewTarget, CqlIdentifiers identifiers)
   at System.Data.Mapping.ViewGeneration.ViewGenerator.GenerateQueryViewForExtentAndType(StorageEntityContainerMapping entityContainerMapping, CqlIdentifiers identifiers, KeyToListMap`2 views, EntitySetBase entity, EntityTypeBase type, ViewGenMode mode)
   at System.Data.Mapping.ViewGeneration.ViewGenerator.GenerateQueryViewForSingleExtent(KeyToListMap`2 views, CqlIdentifiers identifiers, EntitySetBase entity, EntityTypeBase type, ViewGenMode mode)
   at System.Data.Mapping.ViewGeneration.ViewgenGatekeeper.GenerateTypeSpecificQueryView(StorageEntityContainerMapping containerMapping, ConfigViewGenerator config, EntitySetBase entity, EntityTypeBase type, Boolean includeSubtypes, Boolean& success)
   at System.Data.Mapping.StorageMappingItemCollection.ViewDictionary.TryGenerateQueryViewOfType(EntityContainer entityContainer, EntitySetBase entity, EntityTypeBase type, Boolean includeSubtypes, GeneratedView& generatedView)
   at System.Data.Mapping.StorageMappingItemCollection.ViewDictionary.SerializedGeneratedViewOfType(Pair`2 arg)
   at System.Data.Common.Utils.Memoizer`2.<>c__DisplayClass2.<Evaluate>b__0()
   at System.Data.Common.Utils.Memoizer`2.Result.GetValue()
   at System.Data.Common.Utils.Memoizer`2.Evaluate(TArg arg)
   at System.Data.Mapping.StorageMappingItemCollection.ViewDictionary.TryGetGeneratedViewOfType(MetadataWorkspace workspace, EntitySetBase entity, EntityTypeBase type, Boolean includeSubtypes, GeneratedView& generatedView)
   at System.Data.Metadata.Edm.MetadataWorkspace.TryGetGeneratedViewOfType(EntitySetBase extent, EntityTypeBase type, Boolean includeSubtypes, GeneratedView& generatedView)
   at System.Data.Query.PlanCompiler.PreProcessor.ExpandView(Node node, ScanTableOp scanTableOp, IsOfOp& typeFilter)
   at System.Data.Query.PlanCompiler.PreProcessor.ProcessScanTable(Node scanTableNode, ScanTableOp scanTableOp, IsOfOp& typeFilter)
   at System.Data.Query.PlanCompiler.PreProcessor.Visit(FilterOp op, Node n)
   at System.Data.Query.InternalTrees.FilterOp.Accept[TResultType](BasicOpVisitorOfT`1 v, Node n)
   at System.Data.Query.InternalTrees.BasicOpVisitorOfT`1.VisitNode(Node n)
   at System.Data.Query.PlanCompiler.SubqueryTrackingVisitor.VisitChildren(Node n)
   at System.Data.Query.PlanCompiler.SubqueryTrackingVisitor.VisitRelOpDefault(RelOp op, Node n)
   at System.Data.Query.PlanCompiler.PreProcessor.Visit(ProjectOp op, Node n)
   at System.Data.Query.InternalTrees.ProjectOp.Accept[TResultType](BasicOpVisitorOfT`1 v, Node n)
   at System.Data.Query.InternalTrees.BasicOpVisitorOfT`1.VisitNode(Node n)
   at System.Data.Query.PlanCompiler.SubqueryTrackingVisitor.VisitChildren(Node n)
   at System.Data.Query.PlanCompiler.SubqueryTrackingVisitor.VisitRelOpDefault(RelOp op, Node n)
   at System.Data.Query.PlanCompiler.PreProcessor.Visit(ProjectOp op, Node n)
   at System.Data.Query.InternalTrees.ProjectOp.Accept[TResultType](BasicOpVisitorOfT`1 v, Node n)
   at System.Data.Query.InternalTrees.BasicOpVisitorOfT`1.VisitNode(Node n)
   at System.Data.Query.PlanCompiler.SubqueryTrackingVisitor.VisitChildren(Node n)
   at System.Data.Query.InternalTrees.BasicOpVisitorOfNode.VisitDefault(Node n)
   at System.Data.Query.InternalTrees.BasicOpVisitorOfNode.VisitPhysicalOpDefault(PhysicalOp op, Node n)
   at System.Data.Query.InternalTrees.BasicOpVisitorOfT`1.Visit(PhysicalProjectOp op, Node n)
   at System.Data.Query.InternalTrees.PhysicalProjectOp.Accept[TResultType](BasicOpVisitorOfT`1 v, Node n)
   at System.Data.Query.InternalTrees.BasicOpVisitorOfT`1.VisitNode(Node n)
   at System.Data.Query.PlanCompiler.PreProcessor.Process(Dictionary`2& tvfResultKeys)
   at System.Data.Query.PlanCompiler.PreProcessor.Process(PlanCompiler planCompilerState, StructuredTypeInfo& typeInfo, Dictionary`2& tvfResultKeys)
   at System.Data.Query.PlanCompiler.PlanCompiler.Compile(List`1& providerCommands, ColumnMap& resultColumnMap, Int32& columnCount, Set`1& entitySets)
   at System.Data.EntityClient.EntityCommandDefinition..ctor(DbProviderFactory storeProviderFactory, DbCommandTree commandTree)

起初我以为这可能是我们对枚举或其他复杂类型的新实现，但由于即使是最简单的没有关系的实体也会抛出相同的错误，我不知所措。提前感谢您的任何意见。

4

0 回答 0