Initializes a new instance of the RoutedEventArgs class.
Assembly: PresentationCore (in PresentationCore.dll)
When using this parameterless constructor, all public properties of the new RoutedEventArgs instance assume the following default values:
RoutedEvent defaults to null.
Handled defaults to false
Source defaults to null.
OriginalSource defaults to null.
Null values for Source and OriginalSource only mean that the RoutedEventArgs data makes no attempt to specify the source. When this instance is used in a call to RaiseEvent, the Source and OriginalSource values are populated based on the element that raised the event and are passed on to listeners through the routing.