Hi,
I want use Nhibernate with old application. So I need attach transaction of session to curently opened transaction of ADO. My code need be like:

void MyFunction(IDbTransaction adoTransaction)
{
ISession session = factory.OpenSession(adoTransaction.Connection);

// ....... here some code that make any manipulation with nhibernate ex:
Order myOrder = session.Get<Order>(224254);
order.ShippedDate = DateTime.Now;

session.Flush();
}

Where opening/commiting transaction will be done by method that called to MyFunction.
My code is crashed inside "session.Get<Order>(224254)" method with exception:
-------
ExecuteReader requires the command to have a transaction when the connection assigned to the command is in a pending local transaction. The Transaction property of the command has not been initialized.
-------
How i can do it?

Use ISession.Transaction.Enlist(your command).

I can not use ISession.Transaction.Enlist(your command) because existing code of my programm dont know about NHibernte and I can not change it.

Doing it the other way around, i.e. passing an existing transaction to NHibernate, is currently not supported, but will be in the future.