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Tue, Sep 6 2011 12:47 PM | Permanent Link |
Stefano Monterisi | Hi,
I have a problem with cxgrid (Devexpress) and a TEDBQuery as source. I use to change "order by" (with close and open) SQL on the fly on colunm header click and it works well. Work well and performance are good when scroll and fetch records. But incremental search in grid don't work. PC hang up. If i use an external WWincremetalsearch components, it work. But searches in cxgrid don't work with TEDBQuery. Any workaround? Any suggestion? Thanks in advance! Stefano Monterisi Documento senza titolo Stefano Monterisi - monterisi@sesamoweb.it Sesamo Software S.p.A. Via Adamello, 2 71042 Cerignola (Fg) Tel.: +39 0885 416969 - 421501 - 421502 - 416392 Fax: +39 0885 444925 Filiale Via Premuda, 3 00195 Roma Tel.: +39 06 3220238 Fax: +39 06 32646539 www.sesamoweb.it D.L. 30 giugno 2003 n. 196 e D.L. 24 dicembre 2003 n. 354 (tutela dei dati personali) ------------------------------------------------------------------------------------------------------ INFORMAZIONI STRETTAMENTE CONFIDENZIALI Questo messaggio di posta elettronica contiene informazioni di carattere confidenziale rivolte esclusivamente al destinatario sopra indicato. E' vietato l'uso, la diffusione, distribuzione o riproduzione da parte di ogni altra persona. Nel caso aveste ricevuto questo messaggio di posta elettronica per errore, siete pregati di segnalarlo immediatamente al mittente e distruggere quanto ricevuto (compresi i file allegati) senza farne copia. Qualsivoglia utilizzo non autorizzato del contenuto di questo messaggio costituisce violazione dell'obbligo di non prendere cognizione della corrispondenza tra altri soggetti, salvo più grave illecito, ed espone il responsabile alle relative conseguenze. ------------------------------------------------------------------------------------------------------ CONFIDENTIALLY NOTICE This e-mail transmission may contain legally privileged and/or confidential information. Please do not read it if you are not the intended recipient(S). Any use, distribution, reproduction or disclosure by any other person is strictly prohibited. If you have received this e-mail in error, please notify the sender and destroy the original transmission and its attachments without reading or saving it in any manner. Questo messaggio prima dell'invio è stato controllato con Kaspersky Antivirus 6.0 |
Tue, Sep 6 2011 12:59 PM | Permanent Link |
Tim Young [Elevate Software] Elevate Software, Inc. ![]() | Stefano,
<< I have a problem with cxgrid (Devexpress) and a TEDBQuery as source. I use to change "order by" (with close and open) SQL on the fly on colunm header click and it works well. Work well and performance are good when scroll and fetch records. But incremental search in grid don't work. PC hang up. If i use an external WWincremetalsearch components, it work. But searches in cxgrid don't work with TEDBQuery. >> Do you have the grid working in dataset mode (like the normal TDBGrid) or is it loading all of the rows at once ? -- Tim Young Elevate Software www.elevatesoft.com |
Wed, Sep 7 2011 5:41 AM | Permanent Link |
Stefano Monterisi | Tim,
Dataset mode (gridmode = true). In the same way, DBISAM works great. It's a grid on big dataset (Sensite an readonly query in EDB) where I change sort order (change "order by clause" in SQL, close and reopen) and must search data (incremental search) , without load all data in a "canned" query and without load all data in the cxgrid. This is the master grid for remote/multiuser (300 user) environment, so resources and performances are very important. Thanks, Stefano "Tim Young [Elevate Software]" <timyoung@elevatesoft.com> ha scritto nel messaggio news:17D69845-3227-49FD-82E2-2AFD7913998B@news.elevatesoft.com... > Stefano, > > << I have a problem with cxgrid (Devexpress) and a TEDBQuery as source. I > use to change "order by" (with close and open) SQL on the fly on colunm > header click and it works well. Work well and performance are good when > scroll and fetch records. But incremental search in grid don't work. PC > hang up. If i use an external WWincremetalsearch components, it work. But > searches in cxgrid don't work with TEDBQuery. >> > > Do you have the grid working in dataset mode (like the normal TDBGrid) or > is it loading all of the rows at once ? > > -- > Tim Young > Elevate Software > www.elevatesoft.com > |
Wed, Sep 7 2011 8:58 AM | Permanent Link |
Uli Becker | Stefano,
> But searches in > cxgrid don't work with TEDBQuery. > Any workaround? Any suggestion? The incremental search works with GridMode = True, but if the required data is not present in the DataController cache, cxGrid will load more data until the record has been found. With large tables that can make things ultra-slow looking like a crash. Generally it's never necessary to display all records of a big databaset in a grid. You could use an edit-control instead and write some code to search in your dataset. If all indexes are set properly, that should be very fast. Regards Uli |
Wed, Sep 7 2011 10:04 AM | Permanent Link |
Stefano Monterisi | Yes, Uli. It's true. It's not crash but ultra-slow search;
But with DBIsam (table) all works well. I use it for a lot of applications and all work very well (a lot of customers use this approach) Yes, Gridmode is alway True. Thanks, Uli. "Uli Becker" <test@test.com> ha scritto nel messaggio news:B6EE9640-9360-427C-A8EE-0C2BAB0CE925@news.elevatesoft.com... > Stefano, > > > But searches in >> cxgrid don't work with TEDBQuery. >> Any workaround? Any suggestion? > > The incremental search works with GridMode = True, but if the required > data is not present in the DataController cache, cxGrid will load more > data until the record has been found. > > With large tables that can make things ultra-slow looking like a crash. > > Generally it's never necessary to display all records of a big databaset > in a grid. You could use an edit-control instead and write some code to > search in your dataset. If all indexes are set properly, that should be > very fast. > > Regards Uli > |
Wed, Sep 7 2011 2:19 PM | Permanent Link |
Tim Young [Elevate Software] Elevate Software, Inc. ![]() | Stefano,
<< Yes, Uli. It's true. It's not crash but ultra-slow search; But with DBIsam (table) all works well. I use it for a lot of applications and all work very well (a lot of customers use this approach)Yes, Gridmode is alway True. >> Two things: are you using the ElevateDB Server, and are you sure that there is a proper index that matches the column(s) that you're searching on ? More than likely, the CXGrid uses Locate for incremental searches, and Locate will need to have an index in order to quickly find the correct rows. The EDB Manager uses Locate for its search function, so a good test (for comparison purposes) is to try the same type of search against the same table in the EDB Manager. If it works fast there, then something else is wrong. -- Tim Young Elevate Software www.elevatesoft.com |
Wed, Sep 7 2011 3:05 PM | Permanent Link |
Uli Becker | Stefano ,
maybe you get some useful information here: http://www.elevatesoft.com/forums?action=view&category=dbisam&id=dbisam_general&page=21&msg=60984#60984 Regards Uli |
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