如何使用DataContractSerializer仅序列化/反序列化基类属性？

using System;
using System.IO;
using System.Runtime.Serialization;
using System.Xml;

// 基类
[DataContract]
public class MyBaseClass
{
    [DataMember]
    public string BaseProperty { get; set; }
}

// 派生类
[DataContract]
public class MyDerivedClass : MyBaseClass
{
    [DataMember]
    public string DerivedProperty { get; set; }
}

class Program
{
    static void Main(string[] args)
    {
        // 创建派生类对象
        MyDerivedClass obj = new MyDerivedClass
        {
            BaseProperty = "Base Property Value",
            DerivedProperty = "Derived Property Value"
        };

        // 序列化对象
        DataContractSerializer serializer = new DataContractSerializer(typeof(MyBaseClass));
        MemoryStream stream = new MemoryStream();
        serializer.WriteObject(stream, obj);

        // 将数据流转换为字符串
        stream.Position = 0;
        StreamReader reader = new StreamReader(stream);
        string serializedData = reader.ReadToEnd();

        Console.WriteLine("Serialized Data:");
        Console.WriteLine(serializedData);

        // 反序列化对象
        stream.Position = 0;
        MyBaseClass deserializedObj = (MyBaseClass)serializer.ReadObject(stream);

        Console.WriteLine("Deserialized Object:");
        Console.WriteLine("Base Property: " + deserializedObj.BaseProperty);

        Console.ReadLine();
    }
}