.NET XML序列化和继承 [英] .NET XML Serialization and inheritance

问题描述

我的结构如下：

public interface A
{
    public void method();
}

public class B : A
{
}

public class C : A
{
}

List<A> list;

列表包含B和C类型的对象，它们还有一些我想保留的字段，可以我现在序列化它，反序列化并获得正确的对象实例？
最好是XML

List contains objects of type B and C they also have some fields that I would like to keep, can I now serialize it, deserialize back and get the proper object instances? Preferably to XML

编辑：

有没有简单的方法来序列化这个包含的列表接口，然后将其反序列化回B和C实例？

Is there any simple way to serialize this list that contains interfaces, and then deserialize it back to B and C instances?

推荐答案

您可以尝试使用 DataContractSerializer ：

public interface A
{
}

public class B : A
{
}

public class C : A
{
}

class Program
{
    static void Main(string[] args)
    {
        List<A> list = new List<A>(new A[] { new B(), new C() });
        var serializer = new DataContractSerializer(
            list.GetType(), new[] { typeof(B), typeof(C) });

        var sb = new StringBuilder();
        using (var stringWriter = new StringWriter(sb))
        using (var writer = XmlWriter.Create(stringWriter))
        {
            serializer.WriteObject(writer, list);
        }

        using (var stringReader = new StringReader(sb.ToString()))
        using (var reader = XmlReader.Create(stringReader))
        {
            list = (List<A>)serializer.ReadObject(reader);
        }

    }
}

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