Yes, this is more or less what I tried. Every time a record was found, call Application.ProcessMessages No joy.
> You could try counting the executions of OnFilterRecord with a form variable and doing an > application.processmessages every few hundred passes of the filter code. I'd be curious if that works so please repost if it does. Thanks. > > Dave > > --- On Wed, 10/22/08, Theodoros Bebekis <[EMAIL PROTECTED]> wrote: > > From: Theodoros Bebekis <[EMAIL PROTECTED]> > Subject: Re: [delphi-en] Immediate grid update when dataset is filtered? To: [email protected] > Date: Wednesday, October 22, 2008, 1:55 AM > > O/H [EMAIL PROTECTED] Ýãñáøå: >> Delphi 5. >> Have a TDBGrid attached to a TDataset. >> The dataset has a custom filter ie >> procedure TForm1.OnFilterRecord(DataSet: TDataSet; var Accept: Boolean); > ... >> Sometimes, the filter will only pick out a handful of records from a large >> dataset. Say 7 records. >> I notice the grid does not display any entries until all 7 have been found >> (the grid contains more than 7 rows). To find all 7, the entire file has >> been scanned. >> Is there a way to update the grid immediately: as soon as OnFilterRecord >> has returned Accept=true ? >> That is, the grid would populate rows (plop, plop, plop) as the entire file was scanned and each of the records found. The user could then CANCEL >> when they saw their record come up. Instead of waiting for the entire file >> to be filtered/scanned. >> Dataset.Refresh starts the while process over again: that is not what I want. >> Feels like I want a "grid.refresh" method: an > Application.ProcessMessages >> sort of thing, to ensure the grid is actually displaying the record which >> I know has just been accepted in OnFilterRecord. >> Is there a trick, or am I deluding myself, and should take a different approach... ? >> Many thanks in advance. > > Hi > > the Filter/Filtered/OnFilterRecord set > works more or less the way you describe. > > It seems that this is not the functionality you really need. > > From what you describe I understand (possibly I'm wrong) > that you want an operation where > 1. a kind of filtering is applied to the rows of a dataset > testing the rows one by one > 2. when a row passes the test, it is moved to SECOND dataset > and displayed to a second grid. > > If the above is correct, then you have to code it by yourself. > The filtering capabilities of the TDataset do not cover that > kind of functionality. > > > -- > Regards > Theo > > ------------------------ > Theo Bebekis > Thessaloniki, Greece > ------------------------ > Greek_Delphi_Prog : a Delphi Programming mailing list in Greek at > http://groups.yahoo.com/group/Greek_Delphi_Prog > > CSharpDotNetGreek : A C# and .Net mailing list in Greek language at > http://groups.yahoo.com/group/CSharpDotNetGreek > > atla_custom : a Unisoft Atlantis Customization mailing list at > http://groups.yahoo.com/group/atla_custom > ------------------------ > > ------------------------------------ > > ----------------------------------------------------- > Home page: http://groups.yahoo.com/group/delphi-en/ > To unsubscribe: [EMAIL PROTECTED] Groups Links > > > > > > > > > [Non-text portions of this message have been removed] > > > ------------------------------------ > > ----------------------------------------------------- > Home page: http://groups.yahoo.com/group/delphi-en/ > To unsubscribe: [EMAIL PROTECTED] Groups Links > > > >
