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c#wcfdatacontract
T Camp
T Camp

Reputation: 88

DataContract inheritance not known type

Hi my datacontract has inheritance, but the last member is not accessible when consuming the service:

namespace Services.SearchService
{

    [DataContract]
    [KnownType(typeof(LabellingSearch))]
    public class SearchResult
    {
        [DataMember]
        public int ID { get; set; }

        [DataMember]
        public string Title { get; set; }

        [DataMember]
        public DateTime Modified { get; set; }
    }

    /// <summary>
    /// Specialist Search Result for Labelling Content Data
    /// </summary>
    [DataContract]
    [KnownType(typeof(Labelling))]
    public class LabellingSearch : SearchResult
    {
        [DataMember]
        public string Region { get; set; }

        [DataMember]
        public string Country { get; set; }

        [DataMember]
        public string LabelSummary { get; set; }
    }

    /// <summary>
    /// Full Labelling Content Data
    /// </summary>
    [DataContract]
    public class Labelling : LabellingSearch
    {
        public string Content { get; set; }
   }
}

so in the consuming class I can access the type 'Labelling' but I can't get at its 'Content' property.

Upvotes: 0

Views: 640

Answers (2)

Leri
Leri

Reputation: 12535

You can't access to Content property because it's not DataMember so it's not serialized. Add [DataMember] attribute

[DataMember]
public string Content { get; set; }

From MSDN about DataMemberAttribute Class:

When applied to the member of a type, specifies that the member is part of a data contract and is serializable by the DataContractSerializer.

Upvotes: 1

Abhishek Mathur
Abhishek Mathur

Reputation: 316

You didn't put that member of the class as [DataMember]

[DataContract]
    public class Labelling : LabellingSearch
    {
        [DataMember]
        public string Content { get; set; }
   }

Upvotes: 2

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