序列化专用列表<>

我有一个专门的类,businessobjectlist,带有以下声明:

public class BusinessObjectList<T> : List<BusinessObject> where T: BusinessObject {}

我想序列化这个类的对象,比如:

info.AddValue("myList", myList);

我试图添加接口ISerializable,但没有成功。

public class BusinessObjectList<T> : List<BusinessObject>, ISerializable where T: BusinessObject {}

未序列化时,列表始终为空。 我认为list<gt;对象是可序列化的,但是它们的子类呢?

编辑:

仅供将来参考,以下是整个类:

businessobjectlist.cs(当您调用save()时,它会自动在db all inserts和removes中保持,并将所有修改后的值保存在业务对象上):

[Serializable()]
public class BusinessObjectList<T> : List<BusinessObject>,ISerializable where T: BusinessObject
{
    public delegate void BusinessObjectListDeleteHandler(T objDeleted);
    public event BusinessObjectListDeleteHandler deleteHandler;

    List<BusinessObject> objsForDelete = new List<BusinessObject>();
    public BusinessObjectList()
    {

    }

    public new void Add(BusinessObject item)
    {
        base.Add(item);
    }
    public new T this[int index]
    {
        get
        {                 
            return (T)base[index];
        }
    }

    public bool save()
    {
        foreach (T obj in objsForDelete)
        {
            if (deleteHandler != null)
                deleteHandler(obj);
            obj.delete();
        }
        objsForDelete.Clear();
        foreach (BusinessObject obj in this)
        {
            obj.save();
        }
        return true;
    }

    public new void Clear()
    {
        foreach (BusinessObject obj in this)
        {
            //obj.delete();
            objsForDelete.Add(obj);
        }
        base.Clear();
    }

    public new void Remove(BusinessObject obj)
    {
        // obj.delete();
        objsForDelete.Add(obj);
        base.Remove(obj);
    }

    public new void RemoveAt(int index)
    {
        objsForDelete.Add(this[index]);
        base.RemoveAt(index);
    }


    #region ISerializable Members

    public void GetObjectData(SerializationInfo info, StreamingContext context)
    {
        // should I do something here??
    }

    #endregion
}

和businessobject.cs:

[Serializable()]
public abstract class BusinessObject:ISerializable
{
    public abstract bool save();
    public abstract bool delete();
    public abstract DbTransaction startTransaction();
    public abstract void useTransaction(DbTransaction transaction);
    public abstract DbTransaction getTransaction();

    #region ISerializable Members

    public void GetObjectData(SerializationInfo info, StreamingContext context)
    {            
        // nothing to serialize here            
    }

    #endregion
}