序列化派生類

Question

當有基類連載的性質我有幾個屬性基類：

// must include any derived classes here as known types or else they will throw errors on serialization 
[KnownType(typeof(CollaborationEventMeasureDistance))] 
[DataContract] 
public partial class CollaborationEvent 
{ 
    public bool HasBeenTransported { get; set; } 
    public Guid MessageBoxGuid { get; set; } 

    public CollaborationEvent() 
    { 
     HasBeenTransported = false; 
    } 

} 

而且派生類中有自己的一些屬性：

public class CollaborationEventMeasureDistance : CollaborationEvent 
{ 
    public Geometry Geometry { get; set; } 
} 

當我序列化派生類，其所有屬性都被序列化，但它從基類繼承的屬性不是：

<CollaborationEvent i:type="CollaborationEventMeasureDistance"> 
    <Geometry xmlns:d4p1="http://schemas.datacontract.org/2004/07/ESRI.ArcGIS.Client.Geometry" 
    i:type="d4p1:Polyline"> 
    <d4p1:spatialReference> 
     <d4p1:wkid>26910</d4p1:wkid> 
    </d4p1:spatialReference> 
    <d4p1:paths> 
     <d4p1:points> 
     <d4p1:point> 
      <d4p1:spatialReference> 
      <d4p1:wkid>26910</d4p1:wkid> 
      </d4p1:spatialReference> 
      <d4p1:x>460892.23924271885</d4p1:x> 
      <d4p1:y>5367682.5572773879</d4p1:y> 
     </d4p1:point> 
     <d4p1:point> 
      <d4p1:spatialReference i:nil="true" /> 
      <d4p1:x>461001.35841108358</d4p1:x> 
      <d4p1:y>5367648.5755294543</d4p1:y> 
     </d4p1:point> 
     </d4p1:points> 
    </d4p1:paths> 
    </Geometry> 
</CollaborationEvent> 

任何人都可以指出我做錯了什麼？

我希望我的XML看起來更像：

<CollaborationEvent i:type="CollaborationEventMeasureDistance"> 
    <HasBeenTransported>True</HasBeenTransported> 
    <MessageBoxGuid>blah</MessageBoxGuid> 
    <Geometry xmlns:d4p1="http://schemas.datacontract.org/2004/07/ESRI.ArcGIS.Client.Geometry" 
    i:type="d4p1:Polyline"> 
    <d4p1:spatialReference> 
     <d4p1:wkid>26910</d4p1:wkid> 
    </d4p1:spatialReference> 
    <d4p1:paths> 
     <d4p1:points> 
     <d4p1:point> 
      <d4p1:spatialReference> 
      <d4p1:wkid>26910</d4p1:wkid> 
      </d4p1:spatialReference> 
      <d4p1:x>460892.23924271885</d4p1:x> 
      <d4p1:y>5367682.5572773879</d4p1:y> 
     </d4p1:point> 
     <d4p1:point> 
      <d4p1:spatialReference i:nil="true" /> 
      <d4p1:x>461001.35841108358</d4p1:x> 
      <d4p1:y>5367648.5755294543</d4p1:y> 
     </d4p1:point> 
     </d4p1:points> 
    </d4p1:paths> 
    </Geometry> 
</CollaborationEvent> 

感謝

Answer 1

假設你的Geometry類是可序列化，嘗試這樣的事情：

[DataContract, Serializable] 
public class CollaborationEventMeasureDistance : CollaborationEvent 
{ 
    [DataMember] 
    public Geometry Geometry { get; set; } 
} 

[KnownType(typeof(CollaborationEventMeasureDistance))] 
[DataContract, Serializable] 
public partial class CollaborationEvent 
{ 
    [DataMember] 
    public bool HasBeenTransported { get; set; } 
    [DataMember] 
    public Guid MessageBoxGuid { get; set; } 

    public CollaborationEvent() 
    { 
     HasBeenTransported = false; 
    } 

}