MICROSOFT_PRESS_EBOOK_PROGRAMMING_WINDOWS_8_APPS_WITH_HTML_CSS_AND_JAVASCRIPT_PDF

You can use this method within a binding initializer, as demonstrated in Scenario 1 of the aforementioned
StorageDataSource and GetVirtualizedFilesVector sample, or within a rendering function
that takes the place of the declarative template. We’ll do this for our FlipView sample later on, in “How
Templates Really Work,” which also lets us avoid the one-time binding tricks.
As a final note, Scenario 6 of the FlipView sample contains another example of a different data
source, specifically one working with Bing Search. For that, let’s look at custom data sources.
Custom Data Sources
Now that we’ve seen a collection control like FlipView working against two different data sources, you’re
probably starting to correctly guess that all data sources share some common characteristics and a
common programmatic interface. This is demonstrated again in Scenario 6 of the FlipView sample as
well as in the HTML ListView working with data sources sample shown in Figure 5-6, as we’ll see in this
section.
FIGURE 5-6 The HTML ListView working with data sources sample.
Scenarios 2 and 3 of this sample both work against a WinJS.Binding.List data source, as we’ve
already seen, and provide buttons to manipulate that data source. Those changes are reflected in the
output. The difference between the two scenarios is that Scenario 2 manipulates the data through
WinJS.Binding.List methods like move, whereas Scenario 3 manipulates the underlying data source
directly through a more generic ListDataSource. API.
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