WCF RIA Services - returning custom class of two already defined classes

Question

I have a Silverlight / WCF RIA Services application that uses EF 4. Currently, there is a domain service that returns two types of classes, OrderItem and Event. I'd like to create a class that contains both of these items for easier manipulation of the data at the XAML level. Here is what the class that combines the two classes looks like:

[Serializable]
[DataContract]
public partial class EventOrderItem  {
    [Key]
    [DataMember]
    public string EventOrderItemKey { get { return Event.EventID.ToString() + "-" + OrderItem.OrderItemID.ToString(); } }

    [DataMember]
    public Event Event { get; set; }

    [DataMember]
    public OrderItem OrderItem { get; set; }
}

The domain service returns the EventOrderItem, but the Event and OrderItem properties are not present on the class. How do I get RIA Services to pick up on these two properties?

Answer 1

As per your comment, unfortunately it's not possible (it's one of my biggest bugbears with RIA Services). According to the RIA Services UserVoice site (http://dotnet.uservoice.com/forums/57026-wcf-ria-services) they're working on enabling complex types now, but for the time being you're out of luck :(.

Hope this helps...

Chris