據我瞭解,我必須在我的類的新版本中用[OptionalField]屬性裝飾一個新成員,當我反序列化缺少這個新成員的我的類的舊版本時。怎麼了[可選字段]屬性?
但是,在序列化類後添加InnerTranslator屬性時,下面的代碼不會引發異常。我檢查onDeserialization方法中的屬性爲null(它確認它沒有被序列化),但是我希望代碼能夠拋出異常。 [OptionalField]屬性本身是否可選?
class Program
{
static void Main(string[] args)
{
var listcol = new SortedList<string,string>
{
{"Estados Unidos", "United States"},
{"Canadá", "Canada"},
{"España", "Spain"}
};
var translator = new CountryTranslator(listcol);
using (var file_stream=new FileStream("translator.bin",FileMode.Open))
{
var formatter = new BinaryFormatter();
translator = formatter.Deserialize(file_stream) as CountryTranslator;
file_stream.Close();
}
Console.ReadLine();
}
}
[Serializable]
internal class CountryTranslator:IDeserializationCallback
{
public int Count { get; set; }
public CountryTranslator(SortedList<string,string> sorted_list)
{
this.country_list = sorted_list;
inner_translator = new List<string> {"one", "two"};
}
//[OptionalField]
private List<string> inner_translator;
public List<string> InnerTranslator
{
get { return inner_translator; }
set { inner_translator = value; }
}
private SortedList<string, string> country_list;
public void OnDeserialization(object sender)
{
Debug.Assert(inner_translator == null);
Count=country_list.Count;
}
}
我剛剛發現SOAP格式化程序在inner_translator沒有用[OptionalField]屬性 – Dabblernl 2009-05-30 16:02:56