The CollectionChanged event will be triggered only if the collection itself changes (i.e. an OrderDetail is added or removed to the collection).

I'd suggest to instead listen to the property changed event on the OrderDetail EntityGroup. There, you'd add some logic to locate the parent Order of the OrderDetail changed and would manually raise the PropertyChanged on the Order.

 

You can find more about EntityGroup events at http://drc.ideablade.com/xwiki/bin/view/Documentation/entity-events#HEntityGroupevents.

 

Regards,

   Silvio.

Which is your suggestion to resolve the next problem.

I have an Order and OrderDetail entities.

class Order

{

..

public RelatedEntityList<OrderDetail> Details{ get {return null}};

public decimal Total

{

get { return this.Details.Sum(Amount);

}

}

 

class OrderDetail

{

public decimal Quantity..

public decimal Price..

public decimal Amount...

}

 

Now, when the Amount of OrderDetail change i need to raise an PropertyChanged of Order.Total to make the GUI refreshed, i need some notification from the OrderDetail to know about the change. I try to suscribe in the Order constructor to