Gets or sets whether buttons in the AppBar are displayed without labels and reduced spacing. This is a dependency property.
true, if buttons in the AppBar are displayed without labels and reduced spacing; otherwise, false. The default is false.
In normal mode, when the IsCompact property is set to false, buttons in the AppBar are displayed with labels and spacing between them is specified by the AppBar.ItemSpacing property. You can display buttons in the app bar without labels and reduced spacing, and thereby make the app bar more compact. To do this, set the IsCompact property to true.