.NET(C#)：XML序列化时派生类的处理

.NET(C#)：XML序列化时派生类的处理

针对基类的XmlSerializer序列化派生类

 第一种方法是在基类添加XmlInclude特性，这样的话基类的XmlSerializer可以序列化派生类了。

[XmlInclude(typeof(B))]
public class A
{
    public int value;
}
public class B: A
{
    public int valueB;
}
 
class Program
{
    static void Main()
    {
        var xs =new XmlSerializer(typeof(A));
        using (var textWriter =new StringWriter())
        {
            xs.Serialize(textWriter, new B());
            Console.WriteLine(textWriter);
        }
    }
}

第二种方法就是在XmlSerializer的构造函数内指定派生类型，然后序列化，这样就不用在基类上加入XmlInclude特性了。

public class A
 {
      public int value;
  }
  public class B: A
  {
      public int valueB;
  }
  
 class Program
 {
     static void Main()
     {
         var xs =new XmlSerializer(typeof(A), new Type[] { typeof(B) });
         using (var textWriter =new StringWriter())
         {
             xs.Serialize(textWriter, new B());
             Console.WriteLine(textWriter);
         }
     }
 }