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wcf - entlib wcf 集成在尝试通过引用传递参数时抛出异常

问题描述

在 WCF 服务应用程序中使用企业库时，当我们尝试对具有通过引用传入的参数的操作使用验证时遇到以下异常：

运营合同：

Hubs GetRoute(
    string sourceDepotId,

    [NotNullValidator(MessageTemplate = "...")]
    [RegexValidator("[a-zA-Z]", MessageTemplate = "...")]
    [StringLengthValidator(2, RangeBoundaryType.Inclusive, 2, RangeBoundaryType.Inclusive, MessageTemplate = "...")]
    string countryCode,

    string zipCode,
    DateTime shippingDate,
    DateTime? deliveryDate,
    ref RoutingCodes routingCode,
    out string errorMessage);

例外：

'RoutingCodes&' 类型不能用作类型参数。

[ArgumentException: The type 'RoutingCodes&' may not be used as a type argument.]
   System.RuntimeType.ThrowIfTypeNeverValidGenericArgument(RuntimeType type) +14240432
   System.RuntimeType.SanityCheckGenericArguments(RuntimeType[] genericArguments, RuntimeType[] genericParamters) +57
   System.RuntimeType.MakeGenericType(Type[] instantiation) +218
   Microsoft.Practices.EnterpriseLibrary.Validation.ValidatorFactory.WrapAndInstrumentValidator(Validator validator, Type type) +87
   Microsoft.Practices.EnterpriseLibrary.Validation.ValidatorFactory.FindOrCreateValidator(ValidatorCacheKey cacheKey, Func`3 wrapAndInstrument) +190
   Microsoft.Practices.EnterpriseLibrary.Validation.ValidatorFactory.CreateValidator(Type targetType, String ruleset) +176
   Microsoft.Practices.EnterpriseLibrary.Validation.Integration.WCF.ValidationParameterInspector.CreateInputParameterValidator(ParameterInfo param, String ruleSet) +99
   Microsoft.Practices.EnterpriseLibrary.Validation.Integration.WCF.ValidationParameterInspector..ctor(OperationDescription operation, String ruleSet) +221
   Microsoft.Practices.EnterpriseLibrary.Validation.Integration.WCF.ValidationBehavior.ApplyDispatchBehavior(ContractDescription contractDescription, ServiceEndpoint endpoint, DispatchRuntime dispatchRuntime) +161
   System.ServiceModel.Description.DispatcherBuilder.InitializeServiceHost(ServiceDescription description, ServiceHostBase serviceHost) +5106
   System.ServiceModel.ServiceHostBase.InitializeRuntime() +85
   System.ServiceModel.ServiceHostBase.OnOpen(TimeSpan timeout) +48
   System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout) +293
   System.ServiceModel.HostingManager.ActivateService(ServiceActivationInfo serviceActivationInfo, EventTraceActivity eventTraceActivity) +129
   System.ServiceModel.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath, EventTraceActivity eventTraceActivity) +733

所述类型是枚举类型。我知道您实际上可以在 WCF 中通过 ref 传递参数并且它可以工作，如文档中所述。

这是企业库验证块中的错误还是我们做错了什么？除了不使用验证块之外，您如何规避异常？

标签： wcfpass-by-referenceenterprise-library

解决方案

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