Article View: borland.public.cppbuilder.database.ado
Article #2018Re: TADOQuery and eoASyncFetch problem
From: Vic
Date: Thu, 11 Dec 2003 15:48
Date: Thu, 11 Dec 2003 15:48
60 lines
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3220 bytes
Thanks Vassiliev, that works perfert!!. The problem that I have now is when I try to write it in C++. Which is the way to do this in Builder ? : DataSet.Recordset.Fields['OrderID'].Value All the other things works perfect in Builder too. Thanks "Viatcheslav V. Vassiliev" <support@oledbdirect.com> escribi๏ฟฝ en el mensaje news:3fd874b0@newsgroups.borland.com... > It is interesting. This will not solve your problem, but it is not with > CacheSize - it is with ADO Express. However exactly CacheSize first rows are > missed: > > procedure TForm1.ADOQuery1FetchComplete(DataSet: TCustomADODataSet; > const Error: Error; var EventStatus: TEventStatus); > var > ListItem: TListItem; > i: Integer; > begin > i := 0; > > DataSet.First; > DataSet.Recordset.MoveFirst(); > with ListView1 do > begin > while ( DataSet.Eof = false ) do > begin > ListItem := Items.Add; > ListItem.Caption := //DataSet.FieldValues['OrderID']; > DataSet.Recordset.Fields['OrderID'].Value; > ListITem.SubItems.Add(//DataSet.FieldValues['ProductID']); > DataSet.Recordset.Fields['ProductID'].Value); > Inc(i); > DataSet.Next; > end; > end; > Label1.Caption := 'Dataset '+ IntToStr(Dataset.RecordCount) + ' Items ' + > IntToStr(ListView1.Items.Count) + ' Items2 ' + IntToStr(i); > end; > > I added variable i to be sure that the problem is not in TListView (in other > tests I commented all TListView-related code). I found that if I use ADO > recordset methods (avoiding TDataSet methods) all works correctly. > DataSet.Recordset.MoveFirst() added to position to first record and > DataSet.FieldValues['FieldName'] should be changed to > DataSet.Recordset.Fields['FieldName'].Value. Now correct number is > displayed. Tested with [Order Details] table from Northwind database, MS SQL > Server. > > //------------------------------------------ > Regards, > Vassiliev V. V. > http://www.managed-vcl.com - using .Net objects in Delphi + ADO.Net > http://www.oledbdirect.com - The fastest way to access MS SQL Server, > MS Jet (Access) and Interbase (through OLEDB) >
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X-Google-Language: ENGLISH,ASCII X-Google-Thread: 10698b,361a11b4c91b34f X-Google-Attributes: gid10698b,public X-Google-ArrivalTime: 2003-12-11 08:09:53 PST Reply-To: "Vic" <Victor@espainformatica.com> From: "Vic" <victor@espainformatica.com> Newsgroups: borland.public.cppbuilder.database.ado References: <3fd76a28@newsgroups.borland.com> <3fd80f4e@newsgroups.borland.com> <3fd82a7b@newsgroups.borland.com> <3fd85c21$1@newsgroups.borland.com> <3fd86d01@newsgroups.borland.com> <3fd874b0@newsgroups.borland.com> Subject: Re: TADOQuery and eoASyncFetch problem Date: Thu, 11 Dec 2003 16:48:01 +0100 Lines: 62 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 NNTP-Posting-Host: 80.24.136.172 Message-ID: <3fd891a0$1@newsgroups.borland.com> X-Trace: newsgroups.borland.com 1071157664 80.24.136.172 (11 Dec 2003 07:47:44 -0700) Path: arc1-ca.pugleaf.net!archiver1.google.com!news2.google.com!fu-berlin.de!newsfeed01.sul.t-online.de!t-online.de!newsgroups.borland.com!not-for-mail