我已经在这几天了，我只是不明白为什么会出现这种错误。对于log4net v1.2.10.0，它是FileLoadException，但它发生在XRM SDK linq查询期间。我在应用程序中使用log4net v1.2.12.0，我期望一个bindingRedirect来解决这个问题，但事实并非如此。 （我使用的库需要v1.2.10.0 log4net）
看起来XRM sdk会以某种方式尝试序列化/反序列化程序集。我不确定为什么会这样做，我认为the post可能是相关的。
内部异常为空
异常消息：
Could not load file or assembly 'log4net, Version=1.2.10.0, Culture=neutral, PublicKeyToken=1b44e1d426115821' or one of its dependencies.
The located assembly's manifest definition does not match the assembly reference.
(Exception from HRESULT: 0x80131040)":"log4net, Version=1.2.10.0, Culture=neutral, PublicKeyToken=1b44e1d426115821
服务器堆栈跟踪：
at System.ModuleHandle.ResolveType(RuntimeModule module, Int32 typeToken, IntPtr* typeInstArgs, Int32 typeInstCount, IntPtr* methodInstArgs, Int32 methodInstCount, ObjectHandleOnStack type)
at System.ModuleHandle.ResolveTypeHandleInternal(RuntimeModule module, Int32 typeToken, RuntimeTypeHandle[] typeInstantiationContext, RuntimeTypeHandle[] methodInstantiationContext)
at System.Reflection.RuntimeModule.ResolveType(Int32 metadataToken, Type[] genericTypeArguments, Type[] genericMethodArguments)
at System.Reflection.CustomAttribute.FilterCustomAttributeRecord(CustomAttributeRecord caRecord, MetadataImport scope, Assembly& lastAptcaOkAssembly, RuntimeModule decoratedModule, MetadataToken decoratedToken, RuntimeType attributeFilterType, Boolean mustBeInheritable, Object[] attributes, IList derivedAttributes, RuntimeType& attributeType, IRuntimeMethodInfo& ctor, Boolean& ctorHasParameters, Boolean& isVarArg)
at System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeModule decoratedModule, Int32 decoratedMetadataToken, Int32 pcaCount, RuntimeType attributeFilterType, Boolean mustBeInheritable, IList derivedAttributes, Boolean isDecoratedTargetSecurityTransparent)
at System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeAssembly assembly, RuntimeType caType)
at System.Reflection.RuntimeAssembly.GetCustomAttributes(Type attributeType, Boolean inherit)
at Microsoft.Xrm.Sdk.KnownTypesProvider.GetProxyTypesAttribute(Assembly assembly)
at Microsoft.Xrm.Sdk.KnownTypesProvider.RegisterAssembly(Assembly assembly)
at Microsoft.Xrm.Sdk.KnownTypesProvider.get_KnownAssemblies()
at Microsoft.Xrm.Sdk.KnownTypesProvider.get_KnownOrganizationRequestResponseTypes()
at Microsoft.Xrm.Sdk.KnownTypesResolver.ResolveName(String typeName, String typeNamespace, Type declaredType, DataContractResolver knownTypeResolver)
at System.Runtime.Serialization.XmlObjectSerializerContext.ResolveDataContractFromDataContractResolver(XmlQualifiedName typeName, Type declaredType)
at System.Runtime.Serialization.XmlObjectSerializerContext.ResolveDataContractFromKnownTypes(String typeName, String typeNs, DataContract memberTypeContract, Type declaredType)
at System.Runtime.Serialization.XmlObjectSerializerContext.IsKnownType(DataContract dataContract, Type declaredType)
at System.Runtime.Serialization.XmlObjectSerializerContext.IsKnownType(DataContract dataContract, Dictionary`2 knownDataContracts, Type declaredType)
at System.Runtime.Serialization.KnownTypeDataContractResolver.TryResolveType(Type type, Type declaredType, DataContractResolver knownTypeResolver, XmlDictionaryString& typeName, XmlDictionaryString& typeNamespace)
at Microsoft.Xrm.Sdk.KnownTypesResolver.TryResolveType(Type type, Type declaredType, DataContractResolver knownTypeResolver, XmlDictionaryString& typeName, XmlDictionaryString& typeNamespace)
at System.Runtime.Serialization.XmlObjectSerializerWriteContext.ResolveType(Type objectType, Type declaredType, XmlDictionaryString& typeName, XmlDictionaryString& typeNamespace)
at System.Runtime.Serialization.XmlObjectSerializerWriteContext.WriteResolvedTypeInfo(XmlWriterDelegator writer, Type objectType, Type declaredType)
at System.Runtime.Serialization.XmlObjectSerializerWriteContext.WriteTypeInfo(XmlWriterDelegator writer, DataContract contract, DataContract declaredContract)
at System.Runtime.Serialization.XmlObjectSerializerWriteContext.SerializeWithXsiTypeAtTopLevel(DataContract dataContract, XmlWriterDelegator xmlWriter, Object obj, RuntimeTypeHandle originalDeclaredTypeHandle, Type graphType)
at System.Runtime.Serialization.DataContractSerializer.InternalWriteObjectContent(XmlWriterDelegator writer, Object graph, DataContractResolver dataContractResolver)
at System.Runtime.Serialization.DataContractSerializer.InternalWriteObject(XmlWriterDelegator writer, Object graph, DataContractResolver dataContractResolver)
at System.Runtime.Serialization.XmlObjectSerializer.WriteObjectHandleExceptions(XmlWriterDelegator writer, Object graph, DataContractResolver dataContractResolver)
at System.Runtime.Serialization.XmlObjectSerializer.WriteObject(XmlDictionaryWriter writer, Object graph)
at System.ServiceModel.Dispatcher.DataContractSerializerOperationFormatter.SerializeParameterPart(XmlDictionaryWriter writer, PartInfo part, Object graph)
at System.ServiceModel.Dispatcher.DataContractSerializerOperationFormatter.SerializeParameter(XmlDictionaryWriter writer, PartInfo part, Object graph)
at System.ServiceModel.Dispatcher.DataContractSerializerOperationFormatter.SerializeParameters(XmlDictionaryWriter writer, PartInfo[] parts, Object[] parameters)
at System.ServiceModel.Dispatcher.DataContractSerializerOperationFormatter.SerializeBody(XmlDictionaryWriter writer, MessageVersion version, String action, MessageDescription messageDescription, Object returnValue, Object[] parameters, Boolean isRequest)
at System.ServiceModel.Dispatcher.OperationFormatter.SerializeBodyContents(XmlDictionaryWriter writer, MessageVersion version, Object[] parameters, Object returnValue, Boolean isRequest)
at System.ServiceModel.Dispatcher.OperationFormatter.OperationFormatterMessage.OperationFormatterBodyWriter.OnWriteBodyContents(XmlDictionaryWriter writer)
at System.ServiceModel.Channels.BodyWriterMessage.OnWriteBodyContents(XmlDictionaryWriter writer)
at System.ServiceModel.Security.SecurityAppliedMessage.OnWriteBodyContents(XmlDictionaryWriter writer)
at System.ServiceModel.Security.SecurityAppliedMessage.OnWriteMessage(XmlDictionaryWriter writer)
at System.ServiceModel.Channels.BufferedMessageWriter.WriteMessage(Message message, BufferManager bufferManager, Int32 initialOffset, Int32 maxSizeQuota)
at System.ServiceModel.Channels.TextMessageEncoderFactory.TextMessageEncoder.WriteMessage(Message message, Int32 maxMessageSize, BufferManager bufferManager, Int32 messageOffset)
at System.ServiceModel.Channels.HttpOutput.SerializeBufferedMessage(Message message)
at System.ServiceModel.Channels.HttpOutput.Send(TimeSpan timeout)
at System.ServiceModel.Channels.HttpChannelFactory`1.HttpRequestChannel.HttpChannelRequest.SendRequest(Message message, TimeSpan timeout)
at System.ServiceModel.Channels.RequestChannel.Request(Message message, TimeSpan timeout)
at System.ServiceModel.Channels.SecurityChannelFactory`1.SecurityRequestChannel.Request(Message message, TimeSpan timeout)
at System.ServiceModel.Dispatcher.RequestChannelBinder.Request(Message message, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)
Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
at Microsoft.Xrm.Sdk.IOrganizationService.Execute(OrganizationRequest request)
at Microsoft.Xrm.Sdk.Client.OrganizationServiceProxy.ExecuteCore(OrganizationRequest request)
at Microsoft.Xrm.Sdk.Client.OrganizationServiceProxy.Execute(OrganizationRequest request)
at Microsoft.Xrm.Sdk.Client.OrganizationServiceContext.Execute(OrganizationRequest request)
at Microsoft.Xrm.Sdk.Linq.QueryProvider.RetrieveEntityCollection(OrganizationRequest request, NavigationSource source)
at Microsoft.Xrm.Sdk.Linq.QueryProvider.Execute(QueryExpression qe, Boolean throwIfSequenceIsEmpty, Boolean throwIfSequenceNotSingle, Projection projection, NavigationSource source, List`1 linkLookups, String& pagingCookie, Boolean& moreRecords)
at Microsoft.Xrm.Sdk.Linq.QueryProvider.Execute[TElement](QueryExpression qe, Boolean throwIfSequenceIsEmpty, Boolean throwIfSequenceNotSingle, Projection projection, NavigationSource source, List`1 linkLookups)
at Microsoft.Xrm.Sdk.Linq.QueryProvider.Execute[TElement](Expression expression)
at Microsoft.Xrm.Sdk.Linq.QueryProvider.GetEnumerator[TElement](Expression expression)
at Microsoft.Xrm.Sdk.Linq.Query`1.GetEnumerator()
at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
at ClassLibrary.Class1.Method1() in C:\Users\Greg.tarr\Documents\Visual Studio 2010\Projects\RestService\ClassLibrary\Class1.cs:line 36
答案 0 :(得分：1)
这可能是由项目中对log4net的错误/过时引用（使用更新版本时）引起的，引用被编译到程序集中，然后尝试加载。取自here
还要确保您的PublicKeyToken正确无误。
如果您通过NuGet进行了更新，则令牌可能不正确/无法更新... as per this SO post