.NET XML Serialization and inheritance

Question

I have structure like this:

public interface A
{
    public void method();
}

public class B : A
{
}

public class C : A
{
}

List list;

Answer 1

Assuming you're using the built in .net XML serialization you should take a look at the following attribute:

System.Xml.Serialization.XmlIncludeAttribute

It allows you to instruct the serializer to include other types when serializing/deserializing.

Adding new types to the list and not updating the serialization meta data is a common source of mistakes, make sure you have adequate test coverage.