Hi all, (using LLBLGen 2.5, Adapter, TwoTask, .NET2.0, SQL2005) In my "Terminal Communication"-Project I've created a Table "Terminal" with a lot of Fields and also: - TerminalId (int32) (PK) - MTerminal (int32)

A Terminal can be cascaded (communication is routed via a other Terminal, like Master-Slave way). In a cascaded "slave" Terminal, I filled the MTerminal-Field with the required "Master" TerminalId. Otherwise (in Master Terminals) MTerminal it'll be left 0 (not NULL).

I didn't created a FK on MTerminal to TerminalId. Instead I've added in the LLBLGen Designer Custom 1:n/m:1 Relations. (Called the sides of custiom Relations "mySlaves" and "myMaster").

If I fetch the Tables with a PrefetchPath2 on the custom relation, I get this hierachy Master-Salve as I like.

Fetch(terminal, prefetch);

But if I build up the hierachy manually by fetch one "master" TerminalEntity" and second fetch the mySlaves-TerminalCollection to the "master" TerminalEntity I'm getting an exception "Property mySlaves is readonly":

Fetch(terminal);
terminal.MySlaveTerminals = (EntityCollection<TerminalEntity>)FetchNew(new TerminalEntityFactory(),
                    terminal.GetRelationInfoMySlaveTerminals());

In the generated Code for this TerminalEntity I can see, that this Property is readony (has no setter):

        /// <summary> Gets the EntityCollection with the related entities of type 'TerminalEntity' which are related to this entity via a relation of type '1:n'.
        /// If the EntityCollection hasn't been fetched yet, the collection returned will be empty.</summary>
        [TypeContainedAttribute(typeof(TerminalEntity))]
        public virtual EntityCollection<TerminalEntity> MySlaveTerminals
        {
            get
            {
                if(_mySlaveTerminals==null)
                {
                    _mySlaveTerminals = new EntityCollection<TerminalEntity>(EntityFactoryCache2.GetEntityFactory(typeof(TerminalEntityFactory)));
                    _mySlaveTerminals.SetContainingEntityInfo(this, "MyMaster");
                }
                return _mySlaveTerminals;
            }
        }

Can anyone point me to the right way?

Would you please try something like the following:

Fetch(terminal);
Fetch(terminal.MySlaveTerminals, terminal.GetRelationInfoMySlaveTerminals());