C#自定义序列化ISerializable的实现方法

[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}