Gets or sets whether the opened drop-down tile bar closes on light dismiss. This is a dependency property.
true, if the opened drop-down tile bar closes on light dismiss; otherwise, false. The default is true.
By default, the opened drop-down tile bar is dismissed if an end-user clicks a navigation element in this drop-down or in the nav bar. It is also dismissed if an end-user resumes interaction with the application anywhere outside the TileNavPane (performs a click anywhere outside the TileNavPane). This behavior is called light dismiss. To prevent the drop-down tile bar from being closed on light dismiss, set the CloseOnOuterClick property to false. In this case, the drop-down tile bar closes only if an end-user clicks a navigation element in the TileNavPane.