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

Interface properties are not serializable. However, fields that reference those properties (in the subclass) are.

You'll need to do something like this:

[Serializable]
public class ClassA : IA
{
    private IB _interfaceB;
    public IB InterfaceB { get { return _interfaceB; } set { _interfaceB = value; } }

    public ClassA()
    {
        // Call outside function to get Interface B
        IB interfaceB = Program.GetInsanceForIB();

        // Set IB to have A
        interfaceB.SetIA(this);
    }
}

[Serializable]
public class ClassB : IB
{
    private IA _interfaceA;
    public IA InterfaceA { get { return _interfaceA; } set { _interfaceA = value; } }

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