DataView handles all of that transparently, so it may be worth looking into.

On 8/30/05, Eelco Hillenius <[EMAIL PROTECTED]> wrote:
> We found what it is. Quite logical actually.
> 
> By default, optimizeItemRemoval is set to false, which means that
> ListView replaces all child components by new instances. The idea
> behind this, is that you allways render the fresh data, and as people
> usually use ListViews for displaying read-only lists (at least, that's
> what we think), this is good default behaviour.
> 
> However, as the component is replaced before the rendering starts, the
> search for specific messages for that component fails. It doesn't
> exist anymore! And there's more. The other problem is that 'wrong'
> user input is kept as (temporary) instance data of the components -
> the input fields in your case). And as these components are replaced
> by new one, your user will never see the wrong data.
> 
> This may sound bad, but it is not too bad actually. The fix is to just
> set optimizeItemRemoval to true whenever your nest a ListView in a
> Form. There's only one disadvantage to that: when your list (the model
> of the ListView) changes, you have to manually notify ListView so it
> will render itself from scratch again. But that's probably something
> you won't need often in forms.
> 
> Good luck, hope it solves your problem, and sorry it took us a while
> to look into your problem,
> 
> Eelco
> 
> 
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