Hi,

I have a class

A

and class B

B : A

A has normall class mapping
B has joined-sublcass mapping..

Everything goes OK - I can create A, create B, update A, update B ...

The urgent problem is when I load A and I create B basing on it for example making B something = (B)A;

When I want to update B, it says that there is no row with specified id,
I cant create A, it already exists, update A because B is not created then, create B because something else occurs.


IMPORTANT: There are two tables in database related one to one with the same primary key

I don't exactly now what you mean with "create". In your example you just cast am A to a B which will work if A is basically a B, but then no B will be "created". Can you post the code where you load and update the A/B's ?