使用IXmlSerializable时未调用ReadXml

Question

在尝试使用IXmlSerializable时，我遇到了一些问题。反序列化时似乎没有调用ReadXml方法，而调用了WriteXml方法。

下面是代码的精简版本。

public interface ICharacter { 
string FullName { get; set; }
}

public class Character : ICharacter, IXmlSerializable {
    public string FullName { get; set; }

    public Character() {
        //apply default character information
        FullName = string.Empty;
    }
}

public void ReadXml(XmlReader reader) {
    if (reader == null) return;
    //just using null to see if it's called, i've used a break point to check if it was fired
}

public void WriteXml(XmlWriter writer) {
    writer.WriteElementString("FullName", FullName);
}
}

要序列化和反序列化，我执行以下操作：

        //serialise example
        Character character = new Character();
        using (StringWriter stringWriter = new StringWriter()) {
            XmlSerializer xmlSerializer = new XmlSerializer(typeof(Character));
            xmlSerializer.Serialize(stringWriter, character);
            xml = stringWriter.ToString();
        }            

        //deserialise example 
        using (StringReader stringReader = new StringReader(xml)) {
            XmlSerializer xmlSerializer = new XmlSerializer(typeof(UserCharacter));
            _character = (Character)xmlSerializer.Deserialize(stringReader);
        }

我是不是在这个类的设置上做错了什么？

Answer 1

我最初的印象是继承自IXmlSerializable使我能够读写所有传入的数据。但是，验证是为了确保类类型是相同的。因此，我需要序列化和反序列化Character。

我的意图是能够序列化子类。我已经通过使用WriteXml方法并在该方法中使用反射来获取基于根节点的关联类型，从而实现了这一点。

我希望这个解释能帮助其他人。

Answer 2

public class UserCharacter : Character
{
    public void ReadXml(XmlReader reader)
    {
        base.ReadXml(reader);
    }
    public void WriteXml(XmlWriter writer)
    {
        base.WriteXml(writer);
    }
}