Enum WindowClosingBehavior
Describes how the Closing event behaves in the presence of child windows.
public enum WindowClosingBehavior
Fields
OwnerAndChildWindows = 0
When the owner window is closed, the child windows' Closing event will be raised, followed by the owner window's Closing events. A child canceling the close will result in the owner Window's close being cancelled.
OwnerWindowOnly = 1
When the owner window is closed, only the owner window's Closing event will be raised. This behavior is the same as WPF's.