与KnownType字典的WCF问题 [英] WCF issues with KnownType for Dictionary

问题描述

我有一个服务实现以下DataMember：

  [DataMember] 
 public Dictionary< string，List< ; IOptionQueryResult>> QueryResultItems {get;组;我有从IOQueryQueryResult继承的类OptionQuerySingleResult。现在，我明白，我需要使OptionQueryResult类型已知到服务，因此尝试以各种方式添加KnownType：
  [KnownType（typeof（Dictionary< string，OptionQuerySingleResult []>））] 
 [KnownType（typeof（Dictionary< string，List< OptionQuerySingleResult>））] 
 [KnownType （OptionQuerySingleResult）] 
  
然而，这些方法中没有一个工作，在客户端，我要么反序列化失败或服务器简单地中止请求，导致连接中止错误。
 
 
 
有没有人知道什么是正确的方式来使其工作？
我想补充一点，如果我更改QueryResultItems定义来使用具体的类型，而不是接口，一切都很正常。
 
 
 
谢谢， p> 
 
 
 Tom 
 
 
 
编辑：
我得到的例外是：
 
 
 
行1中的错误元素' http://schemas.microsoft.com/2003/10 /序列化/数组：anyType '包含映射到名称：OptionQuerySingleResult的类型的数据。解串器没有任何类型的知识，映射到这个名字。考虑使用DataContractResolver或将对应于OptionQuerySingleResult的类型添加到已知类型的列表中，例如使用KnownTypeAttribute属性或将其添加到传递给DataContractSerializer的已知类型列表。
 
 
 
但是，当我查看svcutil生成的客户端代理时，OptionQuerySingleResult被定义在其中：
  [System.Diagnostics.DebuggerStepThroughAttribute（）] 
 [System.CodeDom.Compiler.GeneratedCodeAttribute（System.Runtime.Serialization，4.0.0.0）] 
 [System.Runtime.Serialization .DataContractAttribute（Name =OptionQuerySingleResult，Namespace =）] 
 [System.SerializableAttribute（）] 
 public partial class OptionQuerySingleResult：Object，System.Runtime.Serialization.IExtensibleDataObject，System.ComponentModel.INotifyPropertyChanged 
  
 
 
解决方案
我想你会使用：
  [已知类型（typeof（OptionQuerySingleResult）] 
  
但是你还需要一个 [DataContract（您的OptionQuerySingleResult类上的名称=OptionQuerySingleResult）]  
 
 
 
我认为这也依赖于SVCUTIL生成的客户端代理类。 EXE util。
 
I have a service that implements the following DataMember:
[DataMember]
public Dictionary<string, List<IOptionQueryResult>> QueryResultItems { get; set; }
I have the class "OptionQuerySingleResult" which inherits from IOptionQueryResult. Now, I understand that I need to make the OptionQueryResult type "known" to the Service and thus tried to add the KnownType in various ways:
[KnownType(typeof(Dictionary<string, OptionQuerySingleResult[]>))]
[KnownType(typeof(Dictionary<string, List<OptionQuerySingleResult>>))]
[KnownType(typeof(OptionQuerySingleResult)]
However, none of those approaches worked and on the client side I'm either getting that deserialization failed or the server simply aborted the request, causing a connection aborted error.

Does anyone have an idea on what's the proper way to get this to work?
I'd like to add that if I change the QueryResultItems definition to use the concrete type, instead of the interface, everything works just fine.

Thanks,

Tom

Edit:
The exception that I am getting is:

Error in line 1 position 524. Element 'http://schemas.microsoft.com/2003/10/Serialization/Arrays:anyType' contains data from a type that maps to the name ':OptionQuerySingleResult'. The deserializer has no knowledge of any type that maps to this name. Consider using a DataContractResolver or add the type corresponding to 'OptionQuerySingleResult' to the list of known types - for example, by using the KnownTypeAttribute attribute or by adding it to the list of known types passed to DataContractSerializer.

However, when I look at the client proxy that svcutil generates, "OptionQuerySingleResult" is definitely defined in it:
[System.Diagnostics.DebuggerStepThroughAttribute()]
[System.CodeDom.Compiler.GeneratedCodeAttribute("System.Runtime.Serialization", "4.0.0.0")]
[System.Runtime.Serialization.DataContractAttribute(Name="OptionQuerySingleResult", Namespace="")]
[System.SerializableAttribute()]
public partial class OptionQuerySingleResult : object, System.Runtime.Serialization.IExtensibleDataObject, System.ComponentModel.INotifyPropertyChanged 

解决方案
I think you would use:
[KnownType(typeof(OptionQuerySingleResult)]
But you also need a [DataContract(Name = "OptionQuerySingleResult")] on your OptionQuerySingleResult class.

I think this also relies on your client proxy classes being generated by the SVCUTIL.EXE util.

                        
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