XML序列化

Question

我有一個超類和兩個子類，我想序列化的子類的對象作爲一個列表和反序列化

我試圖用一個超類列表，它有物體從兩個子類但最終只有一個例外。

有沒有辦法做到這一點？

Type1 t = new Type1() { text="123" ,opt1=true,opt2=true}; 
Type2 t1 = new Type2() { text="1234",isAnswer=false}; 
Question q1 = new Question() { text="12321"}; 
Question q2 = new Question() { text = "12321" }; 
List<Question> q = new List<Question>() { t1 }; 
FileStream fs = new FileStream("aa.xml", FileMode.OpenOrCreate, FileAccess.Write); 
XmlSerializer xs = new XmlSerializer(typeof(List<Question>)); 
//Exception is generated here InvalidOperationException 
//there was error genearating the XML document 
xs.Serialize(fs, q); 

fs.Close(); 

Answer 1

嘗試通過被稱爲到串行器的類型，如，

serializer = new XmlSerializer(typeof(T), extraTypes);其中extraTypes是，你必須被序列類型的陣列。