Thanks for all the ideas. I'll give them a try and see what performance gains I get.
John --- In flexcoders@yahoogroups.com, "Alex Harui" <[EMAIL PROTECTED]> wrote: > > You will save even more time if you can use subclasses of > DataGridItemRenderer instead of Text and Label. > > ________________________________ > > From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On > Behalf Of j_lentzz > Sent: Thursday, September 06, 2007 10:26 AM > To: flexcoders@yahoogroups.com > Subject: [flexcoders] Re: DataGrid Speed > > > > I was wondering about using labels and text as renderers and then > making the editor the combobox. I'm already using ArrayCollections > for providers. Do you have a feel for how much a speed improvement > getting rid of combobox renderers was? Another thought is how did you > indicate to the user that the label could be clicked, so they would > know it would act like a combobox? > > Thanks for the ideas, > > John > --- In flexcoders@yahoogroups.com <mailto:flexcoders%40yahoogroups.com> > , Scott - FastLane <smelby@> wrote: > > > > John - > > > > I am guessing that it is the large number of complex controls > > (particularly combo box) you are using as renderers that is slowing > you > > down. I had a similar situation and had to change my app such that the > > > data rendered for combo boxes and text inputs is rendered using > mx:Label > > or mx:Text until a user clicks on the cell... then the combo box or > text > > input shows up (itemEditor) to allow the edit. This coupled with > > parsing my data into ActionScript objects and storing them in > > ArrayCollections and using those as grid data providers (rather than > > binding directly to e4x) made performance acceptable for me. > > > > hth > > Scott > > > > j_lentzz wrote: > > > > > > Hi, > > > > > > I have an app where it uses a datagrid to display screen data. The > > > grid is 25 columns wide with 3 columns of comboboxes, 5 columns of > > > checkboxes and the rest are textinputs. The number of rows varies, > > > but can be as high as 40. What I'm seeing is that after all the > > > server results have been processed and the data for the comboboxes > > > (including data providers), checkboxes, etc has been passed to the > > > data grid, the app just spins for up to 30 secs. The app code I > wrote > > > isn't doing anything specific during that time. It is just waiting > > > for the next user event to happen. So it seems like it is the flex > > > stuff working to maybe redraw the screen/datagrid. During this time, > > > my processor generally pegs. Is there someway to speed up this > > > internal processing? Or control it? I've tried reducing the number > of > > > rows displayed and that helps, but I really want to be able to > display > > > all rows at once without the 20-30sec penalty. > > > > > > Thanks, > > > > > > John > > > > > > > > >
