how to pass a custom class as parameter for ria service?

I want to pass a class instance with ria service by async call. For exam开发者_运维问答ple, I have a class defined as

public MyClass{
   public int ID{get;set;}
   public string Name {get;set;}
   public ClassB {get;set;}
}

What I tried is to add anotation [DataContract] and [DataMember]:

[DataContract]
public MyClass{
   [DataMemebr]
   public int ID{get;set;}
   [DataMemebr]
   public string Name {get;set;}
   [DataMemebr]
   public ClassB {get;set;}
}

then I want to pass instance of MyClass in async call at client side. Not sure if this is working. and How to enable MyClass support databinding at client side?

---

To use classes with WCF RIA service you need to mark one member as the key using [Key].

It would also probably help if you spelt DataMemebr as DataMember (assuming that is not just a typo for this question. :)

If you are not using any features of RIA Services (can't tell from your example) you might just want to send it via a normal Siverlight WCF call instead of using RIA.