当然可以，给你个例子

注意类前面的[xmlinclude]那部分
using System;
using System.Collections ;
using System.IO ;
using System.Xml.Serialization;
using System.Diagnostics ;
namespace Bigeagle.Model.Base
{
    ///

    /// 枚举，表示组织结构节点类型
    ///

    public enum ObjectType
    {
        Enterprise = 0 ,
        Outter ,
        Unit ,
        Department ,
        Position ,
        Duty ,
        Data
    }
    ///

    ///
组织结构类

    ///
Author:    [email protected]

    ///
Date:    2001/12/26

    ///
History: 2001/12/26 finished

    ///

2001/12/28，添加流程数组

    ///

    ///组织结构类
    [XmlInclude(typeof(Enterprise)), XmlInclude(typeof(Outter))