KnownTypeAttribute in C++.NET

[Radhakrishnan G]

;

[DataContract]
[KnownType(List<String^>::typeid)]
ref class MyClass
{
public List<String^>^ _myStrings;
};

[DataContract]
[KnownType(List<MyClass^>::typeid)]
ref class NewClass
{
[DataMember]
public List<MyClass^>^ _myClasses;
};

this data contact is failed in WCF serialization Anyone know about this problem?? Thanks