Gets or sets the vertical alignment characteristics applied to this element when it is composed within a parent element such as a panel or items control.
Assembly: PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation
is the Microsoft .NET property accessor for what is in reality a dependency property. This particular dependency property quite frequently has its apparent "default" value set differently in derived element classes, particularly controls. This generally occurs in one of two ways: the dependency property is re-registered to a particular derived class, but with different metadata for setting its defaults; or there is a default style being applied that sets that dependency property value differently. For example, the apparent "default" of for a ComboBoxItem control will be Center, even though ComboBoxItem inherits direct from FrameworkElement. This is because that value was reset within the default style of ComboBoxItem, within the style's control template.