Universal Windows® Apps with XAML and C# Unleashed

AppBar

Like ToolTip, the AppBar control adds nothing to its inner content other than enforcing a minimum height and adding some horizontal padding. It does contain automatic behavior for showing and hiding itself, however (unlike ToolTip which relies on ToolTipService for this). An AppBar is invisible by default but automatically animates in and out when an edge gesture is performed (an appropriate swipe, right mouse button click, pressing Windows+Z, or pressing the context menu key).

You can place an AppBar anywhere you’d place other elements, but it is intended to be attached to a Page via Page’s TopAppBar or BottomAppBar property. When you attach an AppBar to one of these, it docks to the top or bottom edge, it overlays any content underneath ...