Visual Basic 2015 Unleashed

Understanding Pages, the App Bar, and Navigation

In WPF you have windows and Window objects. In universal Windows apps you have pages and Page objects from the Windows.UI.XAML.Controls namespace. With pages, you still define the user interface with XAML markup, and for each page, there is a Visual Basic code-behind file. In a universal app, a page can automatically adapt its layout to the device. The startup page (MainPage.xaml) is responsible for presenting the RSS feed content to the user. To accomplish this, the page uses the data template defined previously in App.xaml. Following is the XAML code for the described requirements:

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<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">    <Grid.RowDefinitions> ...