将单个枚举值传递给WCF服务时，protobuf-net引发有关无效线型的异常

Question

在我的wcf服务上调用以下方法…。

ObservableCollection<PatientViewModel> Search(List<string> searchTerms, SearchNature nature, SearchMode mode, List<SearchField> fields)

导致以下异常…

ProtoBuf.ProtoException, protobuf-net, Version=2.0.0.627, Culture=neutral, PublicKeyToken=75e2634e27c46854

Invalid wire-type; this usually means you have over-written a file without truncating or setting the length; see http://stackoverflow.com/q/2152978/23354

ProtoBuf.ProtoReader.ReadInt32()
proto_4(Object , ProtoReader )
ProtoBuf.ServiceModel.XmlProtoSerializer.ReadObject(XmlDictionaryReader reader, Boolean verifyObjectName)
System.ServiceModel.Dispatcher.DataContractSerializerOperationFormatter.PartInfo.ReadObject(XmlDictionaryReader reader, XmlObjectSerializer serializer)
System.ServiceModel.Dispatcher.DataContractSerializerOperationFormatter.DeserializeParameterPart(XmlDictionaryReader reader, PartInfo part, Boolean isRequest)
System.ServiceModel.Dispatcher.DataContractSerializerOperationFormatter.DeserializeParameters(XmlDictionaryReader reader, PartInfo[] parts, Object[] parameters, Boolean isRequest)
System.ServiceModel.Dispatcher.DataContractSerializerOperationFormatter.DeserializeBody(XmlDictionaryReader reader, MessageVersion version, String action, MessageDescription messageDescription, Object[] parameters, Boolean isRequest)
System.ServiceModel.Dispatcher.OperationFormatter.DeserializeBodyContents(Message message, Object[] parameters, Boolean isRequest)
System.ServiceModel.Dispatcher.OperationFormatter.DeserializeRequest(Message message, Object[] parameters)
System.ServiceModel.Dispatcher.DispatchOperationRuntime.DeserializeInputs(MessageRpc& rpc)
System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc)
System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc)
System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage31(MessageRpc& rpc)
System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet)

注意：如果我删除第二个和第三个参数。 所以方法是

ObservableCollection<PatientViewModel> Search(List<string> searchTerms, List<SearchField> fields)

这很好。

参数字段是一个枚举列表，并且反序列化没有问题。

为什么单个枚举值会导致上述异常？

提前致谢。

供你参考...

[DataContract]
public enum SearchNature
{
    [EnumMember] None,
    [EnumMember] Letters,
    [EnumMember] Numbers
}

[DataContract]
public enum SearchMode
{
    [EnumMember] None,
    [EnumMember] BeginsWith,
    [EnumMember] Contains
}

[DataContract]
public enum SearchField
{
    [EnumMember] None,
    [EnumMember] FirstName,
    [EnumMember] LastName,
    [EnumMember] PatientId,
    [EnumMember] PriorId,
    [EnumMember] PhoneNumber,
    [EnumMember] DateOfBirth
}

编辑：

另外，如果当类型是枚举而不是XmlProtoSerializer时，如果我更改ProtoOperationBehavior以使用默认的序列化程序，则该服务调用会正常工作。

public override XmlObjectSerializer CreateSerializer(Type type, System.Xml.XmlDictionaryString name, System.Xml.XmlDictionaryString ns, IList<Type> knownTypes)
{
    if (type.IsEnum) return base.CreateSerializer(type, name, ns, knownTypes);
    if (model == null) throw new InvalidOperationException("No Model instance has been assigned to the ProtoOperationBehavior");
    return XmlProtoSerializer.TryCreate(model, type) ?? base.CreateSerializer(type, name, ns, knownTypes);
}

Answer 1

枚举，整数，双精度，字符串等本身都不是有效的协议缓冲区消息。 您必须使它们成为对象的字段或属性，然后序列化该对象。

Answer 2

如果您要上一堂课并将其传递到搜索中，那么您应该会得到所需的内容。 希望这会有所帮助。

如果您随后有了序列化器，它将带给您可操作的类对象。

[ProtoContract()]
public class PatientSearch
{
    public PatientSearch()
    {
        searchTerms = new List<string>();
        fields = new List<SearchField>();
    }
    [ProtoMember(1)]
    public List<string>searchTerms {get;private set;}

    [ProtoMember(2)]
    public SearchNature Nature {get; set;}
    [ProtoMember(3)]
    public SearchMode Nature {get; set;}
    [ProtoMember(4)]
    public  List<SearchField> fields {get; private set;}

}