> Tried using SET TRANSACTION and get message
>
> ODBC [State::HY000] Error::invalid transaction handle (expecting
> explicit transaction start)
>
> Tried with an without named transactions.
>
> Tony
>
> > >
> > You will find Firebird Syntax in the Release-Notes and in:
> > http://www.firebirdsql.org/index.php?op=doc&id=userdoc
> >
> > Use "SET TRANSACTION".
> >
> > Uwe
>

It's a connection method.
try (using your previous nomencalture)
dbconnection.BeginTrans
dbconnection.CommitTrans

Alan