錯誤：「反序列化程序不知道映射到此合同的任何類型」？

Question

我有一個類Foo標記爲[Serializable]並執行ISerializable。我試圖通過DataContractSerializer序列化它。在GetObjectData使用我這樣做：

info.AddValue("Test", new[] { 1,2,3}); 

它失敗：

Element ':Test' contains data of the 'http://schemas.microsoft.com/2003/10/Serialization/Arrays:ArrayOfint' data contract. The deserializer has no knowledge of any type that maps to this contract. Add the type corresponding to 'ArrayOfint' to the list of known types - for example, by using the KnownTypeAttribute attribute or by adding it to the list of known types passed to DataContractSerializer.

我想傳遞一個knownTypes ARG到DataContractSerializer的構造 - 沒有幫助。

Answer 1

將knownTypes arg傳遞給DataContractSerializer構造函數將而不是幫助。相反，將[KnownType(typeof(int[]))]添加到Foo類本身。