Article View: borland.public.cppbuilder.database.ado
Article #5965Re: ADO Express Problem
From: Paul Machiaverna
Date: Mon, 04 Dec 2000 14:48
Date: Mon, 04 Dec 2000 14:48
78 lines
2934 bytes
2934 bytes
Ivan:
CodeCentral is in a limited access mode until tomorrow. I'll check it out
then.
Thanks, Paul
"Ivan" <iradev@mail.vega.bg> wrote in message
news:90bt0q$a317@bornews.inprise.com...
> Hi Paul,
>
> This is a bug of ADO Express.
> There is a patch for ADO Express in CodeCentral that fixses this one and
> some other
> bugs.
>
> Ivan
>
>
>
> "Paul Machiaverna" <machiave@i-stat.com> wrote in message
> news:908fug$apf7@bornews.inprise.com...
> > In testing the performance of Borland ADOExpress for C++ Builder 5, I
> wrote
> > a simple test application.
> >
> > An ADO object point is declared:
> >
> > TADOQuery* iptQuery;
> >
> > After it is created and the connection to the database is made, the
> > following code is executed:
> >
> > try
> > {
> > // Perform the query.
> > iptQuery->Close();
> > iptQuery->SQL->Clear();
> > iptQuery->SQL->Add( "SELECT KeyValue FROM TestRecord" );
> > iptQuery->Prepared = true;
> > iptQuery->Open();
> >
> > // While there are records to process,
> > while ( !iptQuery->Eof )
> > {
> > // Get the data and display it.
> > liData = iptQuery->FieldByName( "KeyValue" )->AsInteger;
> > MemoDisplay->Lines->Add( IntToStr( liData ) );
> >
> > // Go to the next record.
> > iptQuery->Next();
> > }
> > }
> > catch( Exception& E )
> > {
> > ShowMessage( E.Message );
> > }
> >
> > // Close the query.
> > iptQuery->Close();
> >
> >
> > This all works fine until it hits the last line (iptQuery->Close()).
> That's
> > when an exception is throw and it reports:
> >
> > "Either BOF or EOF is True, or the current record has been deleted.
> > Requested operation requires a current record."
> >
> > Why does this happen? Is there a way to suppress this? Since I just
want
> > to simply close the query, I really don't want an exception thrown and
> > displayed.
> >
> > Paul
> >
> >
> >
>
>
Technical Details
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 10698b,6b9268797125d6bc X-Google-Attributes: gid10698b,public X-Google-ArrivalTime: 2000-12-04 06:49:26 PST Path: arc1-ca.pugleaf.net!supernews.google.com!sn-xit-02!sn-xit-03!supernews.com!xfer13.netnews.com!netnews.com!newspeer1.nac.net!newsfeed.wirehub.nl!PeerFeed.KWeb.on.ca!bornews.borland.com!not-for-mail From: "Paul Machiaverna" <machiave@i-stat.com> Newsgroups: borland.public.cppbuilder.database.ado Subject: Re: ADO Express Problem Date: Mon, 4 Dec 2000 09:48:08 -0500 Organization: i-STAT Corporation Lines: 80 Message-ID: <90gari$46p6@bornews.inprise.com> References: <908fug$apf7@bornews.inprise.com> <90bt0q$a317@bornews.inprise.com> Reply-To: "Paul Machiaverna" <machiave@i-stat.com> NNTP-Posting-Host: ftp.i-stat.com X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 5.50.4133.2400 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400