객체의 관계까지 Xml로 Serialization 해주는 DataContractSerializer 샘플

DataContractSerializerSample.cs

using System;
using System.IO;
using System.Runtime.Serialization;
using System.Xml;

namespace DataContractSerializerSample {
  [Serializable, KnownType(typeof(DerrivedSerializableModel))]
  public class SerializableModel {
    public SerializableModel node;
  }

  public class DerrivedSerializableModel : SerializableModel {
  }

  class Program {
    static void Main (string[] args) {
      string path = Path.Combine(Environment.CurrentDirectory, "sample.xml");
      var settings = new XmlWriterSettings();
      settings.Indent = true;

      SerializableModel s1 = new SerializableModel();
      SerializableModel s2 = new DerrivedSerializableModel();
      s1.node = s2;

      using (var writer = XmlWriter.Create(path, settings)) {
        DataContractSerializer serializer = new DataContractSerializer(typeof(SerializableModel[]), null, 0x7FFF, false, true, null);
        serializer.WriteObject(writer, new []{
          s1, s2
        });
      }
    }
  }
}

sample.xml

<?xml version="1.0" encoding="utf-8"?>
<ArrayOfSerializableModel xmlns:i="http://www.w3.org/2001/XMLSchema-instance" z:Id="1" z:Size="2" xmlns:z="http://schemas.microsoft.com/2003/10/Serialization/" xmlns="http://schemas.datacontract.org/2004/07/ConsoleApplication1">
  <SerializableModel z:Id="2">
    <node z:Id="3" i:type="DerrivedSerializableModel">
      <node i:nil="true" />
    </node>
  </SerializableModel>
  <SerializableModel z:Ref="3" i:nil="true" />
</ArrayOfSerializableModel>