I am using complex type as datamember of a datacontract - wcf

Question

I am using complex type as datamember of a datacontract. But the service is throwing an exception if i set [DataMember] to the complextype. What might be the reason. KIndly suggest. Below is the code snippet
[DataContract]
public class GetDetailsFromCardNumberResponseBody
{
public GetDetailsFromCardNumberResponseBody()
{
}
public GetDetailsFromCardNumberResponseBody
(PatronAccountCardValidation GetDetailsFromCardNumberResult)
{
this.GetDetailsFromCardNumberResult = GetDetailsFromCardNumberResult;
}
[DataMember]
public PatronAccountCardValidation GetDetailsFromCardNumberResult { get; set; }
}
[DataContract(Name="PatronAccountCardValidation")]
public class PatronAccountCardValidation
{
[DataMember]
public Patron Patron { get; set; }
[DataMember]
public Card Card { get; set; }
[DataMember]
public string BonusDollarLocal { get; set; }
[DataMember]
public string BonusDollarRemote { get; set; }
[DataMember]
public bool Valid { get; set; }
[DataMember]
public string MessageText { get; set; }
}
Check the parameter PatronAccountCardValidation.
Check property Card. It is causing an issue. Please help.
Error received:
An unhandled exception of type
'System.ServiceModel.CommunicationException' occurred in mscorlib.dll
Additional information: An error occurred while receiving the HTTP
response to localhost:9090/DoorAccessAndVendingMachineService. This
could be due to the service endpoint binding not using the HTTP
protocol. This could also be due to an HTTP request context being
aborted by the server (possibly due to the service shutting down). See
server logs for more details

Answer 1

Have you consider to apply Data Contract Know types? It allows you to specify, in advance, the types that should be included for consideration during deserialization. And by default during deserialization, an uninitialized object is first created, without calling any constructors on the type. Then all data members are deserialized. See more details here.
[DataContract]
[KnownType(typeof(PatronAccountCardValidation))]
public class GetDetailsFromCardNumberResponseBody
{
public GetDetailsFromCardNumberResponseBody()
{
}
public GetDetailsFromCardNumberResponseBody
(PatronAccountCardValidation GetDetailsFromCardNumberResult)
{
this.GetDetailsFromCardNumberResult = GetDetailsFromCardNumberResult;
}
[DataMember]
public PatronAccountCardValidation GetDetailsFromCardNumberResult { get; set; }
}
[KnownType(typeof(Card))]
[KnownType(typeof(Patron))]
[DataContract(Name="PatronAccountCardValidation")]
public class PatronAccountCardValidation
{
[DataMember]
public Patron Patron { get; set; }
[DataMember]
public Card Card { get; set; }
[DataMember]
public string BonusDollarLocal { get; set; }
[DataMember]
public string BonusDollarRemote { get; set; }
[DataMember]
public bool Valid { get; set; }
[DataMember]
public string MessageText { get; set; }
}