c# - WP8 Listbox takes too much time to render UI for large set of items -


i have large observablecollection containing text data populated listbox itemssource. data fetching fine, listbox rendering takes time, 4-5 seconds. plus, have textbox want filter out listbox itemesource, if text entered in textbox starts item's text using linq. 

list<locality> l = collection.findall(locality=>locality.name.tolower().startswith(keywordlocation.text.trim()));

the filtering takes time in data set , ruining user experience. ideas how decrease rendering time , improve filtering.

solved. missed on few details. virtualizationstackpanel mode set recycling helped in rendering data faster , filtering out content.


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