I'm using NHibernate 1.2.1.4000 with WCF (.Net 3.0) and having some problems with object graphs sent from the client back to the server.

The serialization from the server to the client works fine, including object graphs with parent/child references (parent with collection of children, each child with a reference back to the parent).

The problem occurs when I delete an item from a collection (IList) with children and pass that back to the server. The server receives the object graph with correct number of items in the collection (i.e. without the deleted one), but the item is not deleted from the dB. My guess is that the serialization 'removes' NHibernate specific information which is required to delete the item from the collection.

I hope there are some workarounds available for the serialization to work in such a way that the NHibernate specifics are kept. The client will 'always' be C# so that should open up a few options.

Any suggestions are most welcome!

I figured out a solution from expanding on the concept addressed in http://davybrion.com/blog/2008/01/sendi ... -wcf-wire/