public class VisibilityChangedEventArgs : DockPanelEventArgs
Public Class VisibilityChangedEventArgs Inherits DockPanelEventArgs
The DockManager.VisibilityChanged event fires for each dock panel owned by the dock manager whose DockPanel.Visibility property has been changed, while the DockPanel.VisibilityChanged event fires for a single panel.
The VisibilityChangedEventArgs class provides properties that identify the dock panel, and its old and new visible states. Instances of this class are automatically created, modified and passed to the appropriate event handlers.