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
}