【 以下文字转载自 DotNET 讨论区 】
发信人: Encryption (ANewLife), 信区: DotNET
标  题: 问一个XML序列化的问题
发信站: BBS 水木清华站 (Sun Jun  6 20:49:51 2004), 站内


有如下两个类：

public class A{
   public ArrayList list;

   public A(){
          list = new ArrayList();
   }

   public void XMLSerialize(string filename){
          StreamWriter sw = new StreamWriter(filename,false,System.Text.Encoding.Default,1024);
          XmlSerializer serializer = new XmlSerializer(typeof(A));
          serializer.Serialize(sw,this);
          sw.Close();
   }
}

public class B{
   public string value;
}

在A的list里放了一些B类的对象，将A序列化时出错说:

Unhandled Exception: System.InvalidOperationException: There was an error genera
ting the XML document. ---> System.InvalidOperationException: The type FinalBatt
le.MapItem was not expected. Use the XmlInclude or SoapInclude attribute to spec
ify types that are not known statically.

在A的序列化方法上添加了[XmlIncludeAttribute(typeof(B))]还是不行，请问应该怎么修改？.net新手上路，请大侠指教！
--
修改:Encryption FROM 166.111.68.*
FROM 166.111.68.*