I have 2 tables (customers,orders) that I have manually created EntityRelations/PrefetchPaths for successfully. (Can't be done in the designer as there is no real PK defined, the tables use composite keys but are logically joined by customer.CustID=order.CustID)

I got this to work in getting the heiracrchy after adding the required plumbing.

IPrefetchPath prefetch = new PrefetchPath((int)EntityType.CustomerEntity);
prefetch.Add(CustomerEntity.PrefetchPathOrderCollection);
CustomerEntity c= new CustomerEntity (27, prefetch);

c.Orders = all the orders for the customers.

Now what do I have to do so that I can change/add/delete items in the c.Orders collection and have them all save with the right PK/FK when I call this.

c.Save(true);

I assume there is some plumbing where I have to tell the CustomerEntity that it has Orders and that there is a PK/FK relationship and what that relationship is etc. probably related to CustomerEntity.GetDependentRelatedEntities() and CustomerEntity.GetMemberEntityCollections() ?? I didn't see anything in the manual related to them though. LLBL of course generates these functions with no entities as there are no relationships in the designer.

Thanks, Ian

I think GetMemberEntityCollections is the one to use. The following is copied from the reference manual:

Gets a list of all entity collections stored as member variables in this entity. The contents of the list is used by the Save logic to perform recursive saves. Only 1:n related collections are returned.

The CustomerEntity.cs class file has this generated (SelfServicing)

public override List<IEntityCollection> GetMemberEntityCollections()
{
            List<IEntityCollection> toReturn = new List<IEntityCollection>();
            return toReturn;
}

I create a partial class CustomerEntity.partial.cs

in that I would then need to replace the GetMemberEntityCollections() but because it's public override already, I can't.

Is there a way to replace GetMemberEntityCollections() in CustomerEntity.cs with my own in CustomerEntity.partial.cs?

Thanks for all your help.

I think I have an answer. Using the TwoClasses generation option for Self-servicing appears to let me override the GetMemberEntityCollections() method.

Ian

Glad you have found a solution to your issue.