Hello, I used a custom cell renderer in my datagrid. Try to trace the behaviour of the setValue method. I saw that it is called a lot of time when the mouse moves above the datagrid. Also if you use the label functions try to trace the behaviour.
I used the datagrid to display thousands of records, using label functions and custom cell renderers. I hoped the datagrid will be improved in Flex 2.0. Someone has an idea about the date of the next release ? On 4/24/05, viraf_bankwalla <[EMAIL PROTECTED]> wrote: > > > David, > > The rendering of this grid takes over 20 seconds on a 20 (rows) and > 30 columns. Yes we have a custom cell renderer which has two images > and 3 labels. We have disabled live scrolling, however as indicated > it takes approx 20 seconds to render this grid. I suspect that it > will take considerably longer on a client machine. > > Any guidance would be appreciated. > > Thanks. > > - viraf > > > --- In flexcoders@yahoogroups.com, David George <[EMAIL PROTECTED]> > wrote: > > Viraf - > > > > When you say "each cell in the grid contains 4 other objects that > are > > displayed", it sounds like you are using a custom cell renderer. > Is > > that right? > > > > Unfortunately, large DataGrids with custom cell renderers are a > known > > performance issue. I'm afraid I can't completely solve your > problem > > on Flex v1.5. You might want to turn off live scrolling, so that > the > > DataGrid doesn't attempt to constantly update while the user is > > dragging the slider thumb. > > > > We've already spoken publicly about the performance improvements > > coming in Flash Player 8, so it should be no surprise that > performance > > is a major focus of Flex v2.0. > > > > Viraf - would you be willing to send us a copy of your app, so > that we > > can use it as a performance test case for the next release? Or ... > > even better ... could you create a simple version of your app that > > just contains the poorly-performing DataGrid? If so, please send > it > > directly to me at my work address - [EMAIL PROTECTED] > > > > Other folks on the list - this is an open invitation to send along > > your performance test cases too! We ordinarily discourage people > from > > contacting employees off-list, but I'll make an exception in this > > case. > > > > Thanks, > > Dave > > > > On 4/13/05, viraf_bankwalla <[EMAIL PROTECTED]> wrote: > > > > > > I have a DataGrid with approximately 20 rows and 10 columns. > Each > > > cell in the grid contains 4 other objects that are displayed. > When > > > scrolling vertically the performance is poor at best. What can > I do > > > to improve the performance? > > > > > > I am reading the articly on Macromedia's site - however my > effectStart > > > and effectEnd eventHandlers are not being invoked. I set them > on a > > > HBox that contains the grids. > > > > > > Thanks. > > > > > > - viraf > > > > > > > > > > > > > > > ________________________________ > > > Yahoo! Groups Links > > > > > > > > > To visit your group on the web, go to: > > > http://groups.yahoo.com/group/flexcoders/ > > > > > > To unsubscribe from this group, send an email to: > > > [EMAIL PROTECTED] > > > > > > Your use of Yahoo! Groups is subject to the Yahoo! Terms of > Service. > > Yahoo! Groups Links > > > > > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/flexcoders/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
