从iPhone MonoTouch应用程序调用WCF服务时出现序列化问题

我在Windows服务器上有一个WCF服务，我正在尝试从MonoDevelopment中的iPhone应用程序调用该服务。web服务客户端是使用Silverlight服务生成实用程序生成的，并复制到MonoTouch环境中的iPhone开发项目中

所以服务非常简单。我有一个方法调用

GetCustomers（）

方法并返回

列表

。我可以在MonoTouch iPhone应用程序代码中成功创建客户端。该方法确实执行，如果我尝试对结果进行计数，它会告诉我有91条记录（Northwind数据库/客户表）。因此，我确信这项服务运作良好

问题是，当我尝试访问Customer对象的任何属性时，会出现以下错误：

CustomerName属性没有公共getter和setter

但下面的例外情况表明，情况并非如此。如果有人能告诉我我做错了什么，我需要一些帮助

Exception in async operation: System.Runtime.Serialization.InvalidDataContractException: DataMember property 'System.String CustomerName' on type 'NorthwindService.Customer' must have both getter and setter. at System.Runtime.Serialization.SharedContractMap.GetMembers (System.Type type, System.Xml.XmlQualifiedName qname, Boolean declared_only) [0x00116] in /Developer/MonoTouch/Source/mono/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/SerializationMap.cs:553 at System.Runtime.Serialization.SharedContractMap.Initialize () [0x00053] in /Developer/MonoTouch/Source/mono/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/SerializationMap.cs:516 at System.Runtime.Serialization.KnownTypeCollection.RegisterContract (System.Type type) [0x0004f] in /Developer/MonoTouch/Source/mono/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/KnownTypeCollection.cs:766 at System.Runtime.Serialization.KnownTypeCollection.TryRegister (System.Type type) [0x0002a] in /Developer/MonoTouch/Source/mono/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/KnownTypeCollection.cs:593 at System.Runtime.Serialization.KnownTypeCollection.RegisterCollection (System.Type type) [0x0000f] in /Developer/MonoTouch/Source/mono/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/KnownTypeCollection.cs:666 at System.Runtime.Serialization.KnownTypeCollection.TryRegister (System.Type type) [0x00062] in /Developer/MonoTouch/Source/mono/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/KnownTypeCollection.cs:605 at System.Runtime.Serialization.KnownTypeCollection.InsertItem (Int32 index, System.Type type) [0x00000] in /Developer/MonoTouch/Source/mono/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/KnownTypeCollection.cs:389 at System.Collections.ObjectModel.Collection`1[T].Add (.T item) [0x0000c] in /Developer/MonoTouch/Source/mono/mcs/class/corlib/System.Collections.ObjectModel/Collection.cs:72 at System.Runtime.Serialization.DataContractSerializer.ReadObject (System.Xml.XmlDictionaryReader reader, Boolean verifyObjectName) [0x0000c] in /Developer/MonoTouch/Source/mono/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/DataContractSerializer.cs:267 at System.Runtime.Serialization.XmlObjectSerializer.ReadObject (System.Xml.XmlDictionaryReader reader) [0x00000] in /Developer/MonoTouch/Source/mono/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/XmlObjectSerializer.cs:74 at System.ServiceModel.Dispatcher.DataContractMessagesFormatter.MessageToParts (System.ServiceModel.Description.MessageDescription md, System.ServiceModel.Channels.Message message) [0x000b8] in /Developer/MonoTouch/Source/mono/mcs/class/System.ServiceModel/System.ServiceModel.Dispatcher/BaseMessagesFormatter.cs:364 at System.ServiceModel.Dispatcher.BaseMessagesFormatter.DeserializeReply (System.ServiceModel.Channels.Message message, System.Object[] parameters) [0x00043] in /Developer/MonoTouch/Source/mono/mcs/class/System.ServiceModel/System.ServiceModel.Dispatcher/BaseMessagesFormatter.cs:175 at System.ServiceModel.ClientRuntimeChannel.Request (System.ServiceModel.Description.OperationDescription od, System.Object[] parameters) [0x0016a] in /Developer/MonoTouch/Source/mono/mcs/class/System.ServiceModel/System.ServiceModel/ClientRuntimeChannel.cs:500 at System.ServiceModel.ClientRuntimeChannel.DoProcess (System.Reflection.MethodBase method, System.String operationName, System.Object[] parameters) [0x00038] in /Developer/MonoTouch/Source/mono/mcs/class/System.ServiceModel/System.ServiceModel/ClientRuntimeChannel.cs:443 at System.ServiceModel.ClientRuntimeChannel.Process (System.Reflection.MethodBase method, System.String operationName, System.Object[] parameters) [0x00000] in /Developer/MonoTouch/Source/mono/mcs/class/System.ServiceModel/System.ServiceModel/ClientRuntimeChannel.cs:425 异步操作中出现异常：System.Runtime.Serialization.InvalidDataContractException:DataMember属性“System.String CustomerName”在类型“NorthwindService.Customer”上必须同时具有getter和setter。 在/Developer/MonoTouch/Source/mono/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/System.Runtime.Serialization/SerializationMap.cs:553中的System.Runtime.Serialization.Serialization.SharedContractMap.GetMembers（System.Type类型，System.Xml.XmlQualifiedName qname，仅声明布尔值）[0x00116] 在/Developer/MonoTouch/Source/mono/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization.SharedContractMap.Initialize（）[0x00053]中 在/Developer/MonoTouch/Source/mono/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/System.Runtime.Serialization/KnownTypeCollection.cs:766中的System.Runtime.KnownTypeCollection.RegisterContract（System.Type类型）[0x0004f]处 在/Developer/MonoTouch/Source/mono/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/System.Runtime.Serialization/KnownTypeCollection.TryRegister（System.Type类型）[0x0002a]中 在/Developer/MonoTouch/Source/mono/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/System.Runtime.Serialization/KnownTypeCollection.RegisterCollection（System.Type类型）[0x0000f]中 在/Developer/MonoTouch/Source/mono/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/KnownTypeCollection.TryRegister（System.Type类型）[0x00062]中 在/Developer/MonoTouch/Source/mono/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/System.Runtime.Serialization/KnownTypeCollection.cs中的System.Runtime.knowntypcollection.InsertItem（Int32索引，System.Type类型）[0x00000 在/Developer/MonoTouch/Source/mono/mcs/class/corlib/System.Collections.ObjectModel/Collection`1[T]中添加（.T项）[0x0000c] 在/Developer/MonoTouch/Source/mono/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/System.Serialization/DataContractSerializer.ReadObject（System.Xml.XmlDictionaryReader，布尔verifyObjectName）[0x0000c]中的System.Runtime 在/Developer/MonoTouch/Source/mono/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/System.Runtime.Serialization/XmlObjectSerializer.ReadObject（System.Xml.XmlDictionaryReader阅读器）[0x00000]中 在/Developer/MonoTouch/Source/mono/mcs/class/System.ServiceModel/System.ServiceModel.Dispatcher.MessageToParts（System.ServiceModel.Description.MessageDescription-md，System.ServiceModel.Channels.Message-Message）[0x000b8]的/Developer/MonoTouch/mcs/System.ServiceModel/System.ServiceModel.Dispatcher/basemessagesformter.cs:364 在/Developer/MonoTouch/Source/mono/mcs/class/System.ServiceModel/System.ServiceModel.Channels.Message Message，System.Object[]参数中的System.ServiceModel.Dispatcher.BaseMessagesFormatter.DeserializeReply（System.ServiceModel.Channels.Message，System.Object[]参数）[0x00043]处 在/Developer/MonoTouch/Source/mono/mcs/class/System.ServiceModel/System.ServiceModel/ClientRuntimeChannel.Request（System.ServiceModel.Description.OperationDescription od，System.Object[]参数）[0x0016a]中的System.ServiceModel 在/Developer/MonoTouch/Source/mono/mcs/class/System.ServiceModel/System.ServiceModel/System.ServiceModel/ClientRuntimeChannel.cs:443中的System.ServiceModel.ClientRuntimeChannel.DoProcess（System.Reflection.MethodBase方法、System.String操作名、System.Object[]参数）[0x00038]处 在/Developer/MonoTouch/Source/mono/mcs/class/System.ServiceModel/System.ServiceModel/System.ServiceModel/ServiceModel/ClientRuntimeChannel.cs:425中的System.ServiceModel.ClientRuntimeChannel.Process（System.Reflection.MethodBase方法，System.String操作名，System.Object[]参数）[0x00000]处

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不，服务不是很好。它似乎是一个异步方法，因此当第一次调用似乎成功时，除非关闭异步调用并获取返回值，否则可能不会成功。结果的处理和计数可能非常成功，但结果的实际序列化（要求客户类型同时具有setter和getter）并不成功

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这是WCF中为数不多的例外之一，几乎总是正确的，而且非常具体。您确定客户类型同时具有getter和setter吗？他们的访问级别一致吗？

不，服务运行不正常。它似乎是一个异步方法，因此当第一次调用似乎成功时，除非关闭异步调用并获取返回值，否则可能不会成功。结果的处理和计数可能非常成功，但结果的实际序列化需要Cust

[DataContract,
MonoTouch.Foundation.Preserve(AllMembers=true)]
public class EntityClass
{
    [DataMember]
    public string Field {get;set;}
}