slow rendering in ListView with many lines

sharonig 0 Newbie Poster

13 Years Ago

Hi,
I'm using AJAX in a rich-client environment (no UpdatePanel, everything is done by the client). I use the ListView.
It appears that when I have many rows it is very slow especially in row additions/removals. Using the profiler I saw that even when adding a row the ItemTemplate is called again for all the rows. it is called from ListViewRenderTask$execute.

Is there a way around this? Why is it creating all the rows again?
I'm using the AJAX Entensions 1.0 - so I might be limited with that.

Thanks,
Sharon

javascript

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