LongListSelector does not refresh using ObservableCollection

Question

I have a simple LongListSelector without grouping option, lists some names. When a name changes in the source, the LongListSelector should have to update the list, but it shouldn't. Searching over the network I found that I have to use an ObservableCollection as data structure, beacause it has NotifyPropertyChanged event. Using an ObservableCollection instead of a List, nothing has changed: the LongListSelector does not update the items when I modify some name in the ObservableCollection. The code is the same of this: http://code.msdn.microsoft.com/wpapps/LongListSelector-Demo-45364cc9

What should I modify to obtain an auto-update LongListSelector? I have to set NotifyPropertyChanged event or not? If yes, how?

Could you please post some code? – Rajeev Nair Apr 04 '14 at 16:07 — Rajeev Nair, Apr 04 '14 at 16:07

score 1 · Accepted Answer · edited May 23 '17 at 11:57

1

The ObservableCollection auto updates when you change the collection itself and not a value inside one of its items. It fires CollectionChanged when you add, remove etc... an item.

You should look at this especially simon's answer, so you can build a reusable object.

edited May 23 '17 at 11:57

Community

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answered Apr 04 '14 at 15:53

MakanWG

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LongListSelector does not refresh using ObservableCollection

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