WCF異常：無法添加到已知類型

Question

美好的一天每個人的列表...

我得到了意想不到的WCF錯誤說「已知類型」，它的名稱相似，但在不同的名稱空間（見錯誤如下）。

...請記住，我仍在試驗這一切。

也...

我已經明白常規的網絡服務，迫使你壓扁的對象層次的性質，但一切我讀過說你沒有這樣做與WCF ......這是爲什麼我正在嘗試這個。

所以我的問題是...

• 問：是否可以告訴WCF來不要忽視 名稱間距？
• 問：我是否缺少標籤？不要WCF 標籤（下面）採取名稱間距爲 帳戶？
• 問：我是否需要將我的物體 層次化？

基本錯誤是...

類型 'wcfFISH.StateManagement.Contractor.New' 自其他類型 不能被添加到已知類型 的名單「wcfFISH.StateManagement.CostDivision 。' 具有相同的數據合同名稱 'wcfFISH.StateManagement.Contractor：新的' 已存在。

錯誤看起來像...

An ExceptionDetail, likely created by IncludeExceptionDetailInFaults=true, whose value is: 
System.InvalidOperationException: An exception was thrown in a call to a WSDL export extension: System.ServiceModel.Description.DataContractSerializerOperationBehavior 
contract: http://tempuri.org/:IFishData ----> System.InvalidOperationException: Type 'wcfFISH.StateManagement.Contractor.New' cannot be added to list of known types since another type 'wcfFISH.StateManagement.CostDivision.New' with the same data contract name 'wcfFISH.StateManagement.Contractor:New' is already present. 
    at System.Runtime.Serialization.DataContract.CheckAndAdd(Type type, Dictionary`2 typesChecked, Dictionary`2& nameToDataContractTable) 
    at System.Runtime.Serialization.DataContract.ImportKnownTypeAttributes(Type type, Dictionary`2 typesChecked, Dictionary`2& knownDataContracts) 
    at System.Runtime.Serialization.DataContract.ImportKnownTypeAttributes(Type type) 
    at System.Runtime.Serialization.ClassDataContract.ClassDataContractCriticalHelper.get_KnownDataContracts() 
    at System.Runtime.Serialization.ClassDataContract.get_KnownDataContracts() 
    at System.Runtime.Serialization.DataContractSet.AddClassDataContract(ClassDataContract classDataContract) 
    at System.Runtime.Serialization.DataContractSet.Add(XmlQualifiedName name, DataContract dataContract) 
    at System.Runtime.Serialization.DataContractSet.AddClassDataContract(ClassDataContract classDataContract) 
    at System.Runtime.Serialization.DataContractSet.Add(XmlQualifiedName name, DataContract dataContract) 
    at System.Runtime.Serialization.DataContractSet.Add(Type type) 
    at System.Runtime.Serialization.XsdDataContractExporter.Export(Type type) 
    at System.ServiceModel.Description.MessageContractExporter.ExportType(Type type, String partName, String operationName, XmlSchemaType& xsdType) 
    at System.ServiceModel.Description.DataContractSerializerMessageContractExporter.ExportBody(Int32 messageIndex, Object state) 
    at System.ServiceModel.Description.MessageContractExporter.ExportMessage(Int32 messageIndex, Object state) 
    at System.ServiceModel.Description.MessageContractExporter.ExportMessageContract() 
    at System.ServiceModel.Description.DataContractSerializerOperationBehavior.System.ServiceModel.Description.IWsdlExportExtension.ExportContract(WsdlExporter exporter, WsdlContractConversionContext contractContext) 
    at System.ServiceModel.Description.WsdlExporter.CallExtension(WsdlContractConversionContext contractContext, IWsdlExportExtension extension) 
    --- End of inner ExceptionDetail stack trace --- 
    at System.ServiceModel.Description.WsdlExporter.CallExtension(WsdlContractConversionContext contractContext, IWsdlExportExtension extension) 
    at System.ServiceModel.Description.WsdlExporter.CallExportContract(WsdlContractConversionContext contractContext) 
    at System.ServiceModel.Description.WsdlExporter.ExportContract(ContractDescription contract) 
    at System.ServiceModel.Description.WsdlExporter.ExportEndpoint(ServiceEndpoint endpoint, XmlQualifiedName wsdlServiceQName) 
    at System.ServiceModel.Description.WsdlExporter.ExportEndpoints(IEnumerable`1 endpoints, XmlQualifiedName wsdlServiceQName) 
    at System.ServiceModel.Description.ServiceMetadataBehavior.MetadataExtensionInitializer.GenerateMetadata() 
    at System.ServiceModel.Description.ServiceMetadataExtension.EnsureInitialized() 
    at System.ServiceModel.Description.ServiceMetadataExtension.HttpGetImpl.InitializationData.InitializeFrom(ServiceMetadataExtension extension) 
    at System.ServiceModel.Description.ServiceMetadataExtension.HttpGetImpl.GetInitData() 
    at System.ServiceModel.Description.ServiceMetadataExtension.HttpGetImpl.TryHandleDocumentationRequest(Message httpGetRequest, String[] queries, Message& replyMessage) 
    at System.ServiceModel.Description.ServiceMetadataExtension.HttpGetImpl.ProcessHttpRequest(Message httpGetRequest) 
    at System.ServiceModel.Description.ServiceMetadataExtension.HttpGetImpl.Get(Message message) 
    at SyncInvokeGet(Object , Object[] , Object[]) 
    at System.ServiceModel.Dispatcher.SyncMethodInvoker.Invoke(Object instance, Object[] inputs, Object[]& outputs) 
    at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc) 
    at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc) 
    at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage4(MessageRpc& rpc) 
    at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage3(MessageRpc& rpc) 
    at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage2(MessageRpc& rpc) 
    at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage1(MessageRpc& rpc) 
    at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet) 

服務代碼看起來像...

namespace wcfFISH.StateManagement 
{ 
    [DataContract(Namespace = "wcfFISH.StateManagement")] 
    [KnownType(typeof(wcfFISH.StateManagement.C1FE.Approved))] 
    [KnownType(typeof(wcfFISH.StateManagement.C1FE.Denied))] 
    [KnownType(typeof(wcfFISH.StateManagement.C1FE.New))] 
    [KnownType(typeof(wcfFISH.StateManagement.C1FE.Pending))] 
    [KnownType(typeof(wcfFISH.StateManagement.Contractor.Authenticated))] 
    [KnownType(typeof(wcfFISH.StateManagement.Contractor.New))] 
    [KnownType(typeof(wcfFISH.StateManagement.CostDivision.Authenticated))] 
    [KnownType(typeof(wcfFISH.StateManagement.CostDivision.New))] 
    [KnownType(typeof(wcfFISH.StateManagement.ReportingPeriod.Closed))] 
    [KnownType(typeof(wcfFISH.StateManagement.ReportingPeriod.Open))] 
    public abstract class ObjectState 
    { 
     #region CONSTRUCTORS 

     protected ObjectState() 
     { } 

     #endregion 

     #region PROPERTIES & FIELDS 

     #endregion 

     #region EVENTS 
     #endregion 

     #region METHODS  
     #endregion 
    } 
} 

邊注...

另一個原因，我困惑的是原來的聲明下面列出永遠不會造成問題......它工作正常！這隻發生在我添加CostDivision時！

[KnownType(typeof(wcfFISH.StateManagement.C1FE.New))] 
[KnownType(typeof(wcfFISH.StateManagement.Contractor.New))] 

在情況下，我沒有說清楚...

我的理解是WCF應瞭解以下類之間的差異：

[KnownType(typeof(wcfFISH.StateManagement.Contractor.Authenticated))] 
[KnownType(typeof(wcfFISH.StateManagement.Contractor.New))] 
[KnownType(typeof(wcfFISH.StateManagement.CostDivision.Authenticated))] 
[KnownType(typeof(wcfFISH.StateManagement.CostDivision.New))] 

如果不明白...

我想我唯一的選擇似乎是把hiera弄平rchy一切爲：

wcfFISH.StateManagement.Authenticated 
wcfFISH.StateManagement.New 

...這是我唯一的選擇嗎？ （希望不是！）

Answer 1

我的心理能力告訴我，您的wcfFISH.StateManagement.CostDivision.New聲明是從wcfFISH.StateManagement.Contractor.New複製/粘貼的，而您更改類名稱時並未更改DataContract屬性就可以匹配。