You can remember your last index of the scroolbar and use scorllToIndex(index : int) after the refresh.
HTH, Claudiu ________________________________ From: Fu Di <[EMAIL PROTECTED]> To: [email protected] Sent: Wednesday, November 19, 2008 11:03:39 AM Subject: Re: [flexcoders] Re: dataGrid effciency thank u, other problem puzzle me, when the dataGrid's data changing and it will refresh itself. if i drag scrollbar to a position,after the dataGrid refresh the scrollbar will go to top of dataGrid.. ________________________________ From: Tim Hoff <[EMAIL PROTECTED] com> To: [EMAIL PROTECTED] ups.com Sent: Wednesday, November 19, 2008 2:36:08 PM Subject: [flexcoders] Re: dataGrid effciency Hi, The biggest performance culprits with a DataGrid, or any of the ListBase components, is the itemRenderers and the size of the dataProvider. You can optimize the itemRenderers by using UIComponent; see Alex's blog. And depending on how many items are in the dataProvider, you could see performance issues there as well. If you are performing any calculations you might look at ways to tighten up the code. With a one second refresh, you might be asking too much of the UI. -TH --- In [EMAIL PROTECTED] ups.com, Fu Di <[EMAIL PROTECTED]> wrote: > > hi everyone, i used dataGrid to display a list of real time data. when i finished it, i found it is slow. > the DataGrid has 13 DataGridColumns, every column almost nest a ItemRenderer. i had to do this to meet the requirements of pattern. > the data update every second, and i need to change the components¢ style in some columns following the data. as i know these two aspects > will cost large calculation. > > who konws how to optimize it or other ways to achieve. > > thanks >
