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XAML Unleashed by Adam Nathan

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Data Virtualization

ListView also contains support for data virtualization, but that requires data binding, so it is discussed in Chapter 17. Unlike UI virtualization, which is the process of constructing the item containers on-demand, data virtualization is the practice of constructing the underlying items on-demand as well. This can not only be vital for large collections, but modest-sized ones that are slow to retrieve (typically because the source data is online).

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