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XAML Unleashed by Adam Nathan

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Incremental Item Rendering

Incremental item rendering improves the performance of rendering a lot of items, which can greatly improve the experience of scrolling through a long list. When there’s not enough time to completely render new items that enter the screen in a given frame, you can prioritize the rendering of the individual elements that make up each item. That way, every item can be at least partially rendered, rather than having only a few items completely rendered and the rest not rendered at all. Taking advantage of this feature also involves the use of data templates.

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