2017-05-16 23:21 GMT+02:00 PICCORO McKAY Lenz <mckaygerh...@gmail.com>: > umm so then as you said, the rs number 30000 does not load until i get down > the gridview to the row 30000! ? > > if this the case, how can i implement a search input that retrieve data > when i put strings!?
gridview is just a viewer ! > > Lenz McKAY Gerardo (PICCORO) > http://qgqlochekone.blogspot.com > > 2017-05-16 17:10 GMT-04:00 Tobias Boege <tabo...@gmail.com>: > >> On Tue, 16 May 2017, PICCORO McKAY Lenz wrote: >> > In gambas wiki documentation said: >> > >> > You can fill the grid explicitly, or implement the Data >> > <http://gambaswiki.org/wiki/comp/gb.qt4/gridview/.data> event to display >> > the grid contents on demand. >> > >> > You should use the last method if you have a lot of rows to display. The >> > control can handle millions of lines gracefully. >> > >> > but i try to set gridview.data event and set GridView1*.*Data*.*Text but >> > when comes the object said it null (Data) ... >> > >> > its there any example to load? i have a CSV and also a table db.. please >> > its the documentation wrong? >> > >> >> It's not. This method is so fast and easy on memory because you load the >> GridView contents *on demand*. Read the text carefully: it tells you that >> the GridView will raise the Data *event* (not the Data property; it even >> links to the Data event documentation [1] which is IMHO comprehensive >> enough) when it needs the contents of certain cells. >> >> So, when the GridView control detects that it should display a certain >> cell, >> identified by a Row and a Column number, it will raise the GridView_Data >> event with just these Row and Column arguments. *During* such a Data event, >> the GridView.Data property will contain a valid object and you have to >> retrieve the cell data somehow (from your CSV file or database or ...) and >> store it inside the GridView.Data property. You may only use the Data >> property during the Data event. >> >> If you still need an example, the IDE source code has some. You can also >> look at the implementation of the ListBox control in gb.gui.base. It uses >> the Data event of a GridView internally, too. (Who would've thought that >> the ListBox is also just a GridView in disguise?) >> >> Regards, >> Tobi >> >> [1] http://gambaswiki.org/wiki/comp/gb.qt4/gridview/.data >> >> -- >> "There's an old saying: Don't change anything... ever!" -- Mr. Monk >> >> ------------------------------------------------------------ >> ------------------ >> Check out the vibrant tech community on one of the world's most >> engaging tech sites, Slashdot.org! http://sdm.link/slashdot >> _______________________________________________ >> Gambas-user mailing list >> Gambas-user@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/gambas-user >> > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Gambas-user mailing list > Gambas-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/gambas-user -- Fabien Bodard ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Gambas-user mailing list Gambas-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gambas-user