自定义序列化 ISerializable 的实现

    [Serializable]    public class BaseObject    {        [OptionalField]        private string _str = "I am BaseObject";    }

    [Serializable]    public class TestObject : BaseObject, ISerializable

    {        int a;

        string strName = "";

        Color c = Color.Red;

        DataTable _dtColors = null;

 

        [OptionalField]        ArrayList list = new ArrayList();

        [OptionalField]        List<int> list1 = new List<int>();

        [OptionalField]        Dictionary<int, string> dic = new Dictionary<int, string>();

 

        //当实现ISerializable接口时，如果该构造函数不存在，则会引发一个SerializationException异常

        //该特性表示，该方法只允许序列化器调

        [SecurityPermissionAttribute(SecurityAction.Demand, SerializationFormatter = true)]        protected TestObject(SerializationInfo info, StreamingContext context)        {

 

            #region  如果基类也实现了ISerializable接口，则序列化器会自动调用基类的该构造函数，就不需要本段代码

 

            Type basetype = this.GetType().BaseType;            MemberInfo[] mi = FormatterServices.GetSerializableMembers(basetype, context);

            for (int i = 0; i < mi.Length; i++)            {                //由于AddValue不能添加重名值，为了避免子类变量名与基类变量名相同，将基类序列化的变量名加上基类类名                FieldInfo fi = (FieldInfo)mi[0];                object objValue = info.GetValue(basetype.FullName + "+" + fi.Name, fi.FieldType);                fi.SetValue(this, objValue);            }

 

            #endregion

            a = info.GetInt32("a");            strName = info.GetString("strName");            c = (Color)info.GetValue("c", typeof(Color));            _dtColors = (DataTable)info.GetValue("_dtColors", typeof(DataTable));            list = (ArrayList)info.GetValue("list", typeof(ArrayList));            list1 = (List<int>)info.GetValue("list1", typeof(List<int>));            dic = (Dictionary<int, string>)info.GetValue("dic", typeof(Dictionary<int, string>));        }

        public TestObject()        {            a = 100;            strName = "daps";

            InitColorTable();

            list1.Add(10);            list1.Add(20);       

        }

 

        #region ISerializable 成员

 

        [SecurityPermissionAttribute(SecurityAction.Demand, SerializationFormatter =true)]        void ISerializable.GetObjectData(SerializationInfo info, StreamingContext context)        {            info.AddValue("a", a);            info.AddValue("strName", strName);            info.AddValue("c", c);            info.AddValue("_dtColors", _dtColors);            info.AddValue("list", list);            info.AddValue("list1", list1);            info.AddValue("dic", dic);

            Type basetype = this.GetType().BaseType;            MemberInfo[] mi = FormatterServices.GetSerializableMembers(basetype, context);

            for (int i = 0; i < mi.Length; i++)            {                //由于AddValue不能添加重名值，为了避免子类变量名与基类变量名相同，将基类序列化的变量名加上基类类名                info.AddValue(basetype.FullName + "+" + mi[i].Name, ((FieldInfo)mi[i]).GetValue(this));            }        }

 

        #endregion    }