Hi all,

I have some questions related to a Parent Child Relationshipp in an WPF form.

There are two object, each in his TabItem displayed in a readonly grid and bound to other controls for editing.

How can I requery the child object (a list bound to a grid in other tab) when parent child selected entity changes?

What Event should I use?

What about Changes in the child object? They Sould be saved before requerying.

How can I manage it to not allow creating new entitys in the child object if the parent object is a new entity and it is not saved yet? (or there is no entity)

Thanks in advance,
Antonio