Article View: borland.public.cppbuilder.database.ado
Article #5958ADO Express Problem
From: Paul Machiaverna
Date: Fri, 01 Dec 2000 15:25
Date: Fri, 01 Dec 2000 15:25
50 lines
2239 bytes
2239 bytes
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
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 10698b,6b9268797125d6bc,start X-Google-Attributes: gid10698b,public X-Google-ArrivalTime: 2000-12-01 07:32:16 PST Path: arc1-ca.pugleaf.net!supernews.google.com!sn-xit-02!supernews.com!bignews.mediaways.net!blackbush.xlink.net!newsfeed01.sul.t-online.de!t-online.de!fr.clara.net!heighliner.fr.clara.net!skynet.be!hub.org!hub.org!PeerFeed.KWeb.on.ca!bornews.borland.com!not-for-mail From: "Paul Machiaverna" <machiave@i-stat.com> Newsgroups: borland.public.cppbuilder.database.ado Subject: ADO Express Problem Date: Fri, 1 Dec 2000 10:25:59 -0500 Organization: i-STAT Corporation Lines: 53 Message-ID: <908fug$apf7@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