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Have you tried manually refreshing the CollectionView after update
by CollectionView.Refresh()?<br>
<br>
--<br>
-- Lukáš<br>
<br>
<br>
On 18.8.2010 17:35, Ken MacDonald wrote:
<blockquote
cite="mid:AANLkTinHPyp17kixXu5HM9feQTLRieJ0RKeeOXTFo0JG@mail.gmail.com"
type="cite">I have inherited a WPF/ipy app which is using data
binding / CollectionView to interact with a customer list. Steps
are roughly:<br>
<br>
1. query cust. list from DB, sorted by name<br>
2. bind this to a CollectionView<br>
3. step through the list, displaying 1 cust. at a time using the
CollectionView.Next/Previous (forget the exact name) operators,<br>
moved thru the list in alpha-sorted order<br>
4. re-sort the list by, say, customer type. Still moves thru the
list with Next/Previous except now sorted by type, no longer by
alpha.<br>
Perfect so far, but............<br>
<br>
5. New customers (maybe) have been added to the DB. I re-query the
customer list to pick up any new ones. The new list is sorted by
customer type (remembered my last sort criteria).<br>
6. bind this to a CollectionView. <br>
7. step thru the list, using Next/Previous on the CollectionView.
The customers appear in <b>utterly random order</b>, not by
alpha, not by customer type.<br>
<br>
So, I'm a bit stymied. I've been looking through the MSDN but
haven't seen anything that addresses how to update
CollectionView/data binding to reflect new data in the customer
list, or whether it is, in fact, possible to do so. I've found a
couple of hints, and tried dozens of variations on the code that
seems like it should "just work". It's quite tempting to just
maintain my own lists and navigation in python.<br>
<br>
I've deliberately NOT included any code; for one thing, it's
scattered over a number of modules of python (and XAML) but am
interested in how any of you would approach the
re-binding-to-new-data problem; also, if any of you tried it and
found it equally as bizarre and arcane and impossible as it seems
to be for my app.<br>
Thanks!<br>
Ken<br>
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