How can I serialize an object that has an interface as a property?

Question

I have 2 interfaces IA and IB.

public interface IA
{
    IB InterfaceB { get; set;  }
}

public interface IB
{
    IA InterfaceA { get; set;  }

    void Set         


        

Answer 1

Implement ISerializable on your objects to control the serialization.

[Serializable]
public class ClassB : IB, ISerializable
{
  public IA InterfaceA { get; set; }

  public void SetIA(IA value)
  {
     this.InterfaceA = value as ClassA;
  }

  private MyStringData(SerializationInfo si, StreamingContext ctx) {
    Type interfaceAType = System.Type.GetType(si.GetString("InterfaceAType"));
    this.InterfaceA = si.GetValue("InterfaceA", interfaceAType);
  }

  void GetObjectData(SerializationInfo info, StreamingContext ctx) {
    info.AddValue("InterfaceAType", this.InterfaceA.GetType().FullName);
    info.AddValue("InterfaceA", this.InterfaceA);
  }
}