Check this video on working with Item Renderer it's helpful, can
answer your question
http://www.youtube.com/flexatbeach#p/u/23/KnBO2GfV5W0
Regards,
Devaraj

On Jul 2, 4:45 pm, Ravi Srinivas <rsrin...@gmail.com> wrote:
> using a timer for each and every column is not idea, since i have more
> number of columns in my datagrid.
>
>
>
> On Fri, Jul 2, 2010 at 3:57 PM, oviya selvan <srioviy...@gmail.com> wrote:
> > @vipul: As far as i know, we can have column centric timer. I mean we can
> > define timer in itemRenderer. so each column can have only one itemRenderer.
> > Please correct me if i am wrong.
>
> > On Fri, Jul 2, 2010 at 10:18 AM, Vipul Sharma 
> > <vipulsharma.1...@gmail.com>wrote:
>
> >> @oviya : The updating of the dataprovider will intern call the
> >> datagrid redraw
>
> >> @ravi : this will sound like a hack but, you can have a ItemRenderer
> >> for you column and in it have a timer being  placed calling any of
> >> your method within each interval of your choice. In that method you
> >> can call your ItemRenderer's refreshing logic, even if it is like
> >> calling some server to fetch you something.
>
> >> Now again, for each cell of that column you will be having Timer
> >> functions calling the refresh for you. This might be a trade off to
> >> choose, but certainly all other options to stop datagrid redraw will
> >> land you into more lines of code and that will be difficult to manage
> >> and work with all user actions which can be performed on a datagrid.
>
> >> Still you will had one UI issue for having those ItemRenderers display
> >> inapropriately when you take your mouse over any selected row, because
> >> your ItemRenderer will be redrawing each time your timer calls it.
>
> >> On Jul 1, 4:58 pm, oviya selvan <srioviy...@gmail.com> wrote:
> >> > Hi Ravi,
>
> >> >   Instead of trying to update individual cell, you can update
> >> dataprovider
> >> > of DataGrid. I hope it should be helpful.
>
> >> > Thanks
> >> > Oviyan
>
> >> > On Thu, Jul 1, 2010 at 12:36 PM, Ravi <rsrin...@gmail.com> wrote:
> >> > > recently i came across one problem  how can i update datagrid
> >> > > individual cell.
>
> >> > > if i give dataprovider to again, datagrid is redrawn so performance
> >> > > will come down
>
> >> > > is there any other way of doing this.
>
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> >> > > For more options, visit this group at
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>
> >> > --
> >> > Regards,
> >> > Oviyan
>
> >> > Blog     :  http://www.oviyas.blogspot.com/
> >> > contact :  +91 - 91762 72633
>
> >> --
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> > --
> >  Regards,
> > Oviyan
>
> > Blog     :  http://www.oviyas.blogspot.com/
> > contact :  +91 - 91762 72633
>
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