使用XmlSerializer序列化派生类

Question

我正在使用XMLSerializer来序列化包含通用列表的对象

List <ChildBase> Children {get;set}

问题是每个元素ChildBase实际上都是抽象类.当我尝试反序列化时,我得到一个invalidOperationException

有没有办法可以将XMLSerializer与派生对象一起使用？谢谢.

Answer 1

有三种方法可以做到这一点; 您可以使用[XmlInclude]该类型,也可以使用XmlElement/ XmlArrayItem反对该属性.它们都显示在下面; 取消注释您喜欢的那对:

using System;
using System.Collections.Generic;
using System.Xml.Serialization;
public class MyWrapper {
    //2: [XmlElement("A", Type = typeof(ChildA))]
    //2: [XmlElement("B", Type = typeof(ChildB))]
    //3: [XmlArrayItem("A", Type = typeof(ChildA))]
    //3: [XmlArrayItem("B", Type = typeof(ChildB))]
    public List<ChildClass> Data { get; set; }
}
//1: [XmlInclude(typeof(ChildA))]
//1: [XmlInclude(typeof(ChildB))]
public abstract class ChildClass {
    public string ChildProp { get; set; }
}
public class ChildA : ChildClass {
    public string AProp { get; set; }
}
public class ChildB : ChildClass {
    public string BProp { get; set; }
}
static class Program {
    static void Main() {
        var ser = new XmlSerializer(typeof(MyWrapper));
        var obj = new MyWrapper {
            Data = new List<ChildClass> {
                new ChildA { ChildProp = "abc", AProp = "def"},
                new ChildB { ChildProp = "ghi", BProp = "jkl"}}
        };
        ser.Serialize(Console.Out, obj);
    }
}

Answer 2

您可以使用XmlIncludeAttribute.或者以另一种方式看到这篇文章.