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【CSharp】自定义序列化 ISerializable

作者: / 发布于2014/5/22/ 461


	[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
	}

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