Custom Stretching with Nine-Grid
For Windows Store and universal apps, Image has a nifty built-in nine-grid feature that enables you to use a single image as a flexible border by customizing how it stretches. (It’s also hardware accelerated for great performance.) Without this support, you’d need to use up to nine separate images to create the same effect.
Figure 11.1 demonstrates the regular image-stretching behavior using the following Grid that contains the same image unstretched on the left versus stretched (and therefore pixelated) on the right:
<Page ...> <Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"> <Grid.ColumnDefinitions> <ColumnDefinition Width="Auto"/> <ColumnDefinition ...
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