Window Event Sequence

The full sequence of events fired for a Window object are as follows.

On application startup, if the Window is the application’s main window.

(Application events are also shown in the correct sequence).

• Application.Startup
• Window.Initialized
• Window.IsVisibleChanged
• Window.SizeChanged
• Window.LayoutUpdated
• Window.SourceInitialized
• Application.Activated
• Window.Activated
• Window.PreviewGotKeyboardFocus
• Window.IsKeyboardFocusWithinChanged
• Window.IsKeyboardFocusedChanged
• Window.GotKeyboardFocus
• Window.LayoutUpdated
• Window.Loaded
• Window.ContentRendered

On normal application shutdown, the event sequence is:

• Window.Closing
• Window.IsVisibleChanged
• Window.Deactivated
• Application.Deactivated
• Window.IsKeyboardFocusWithinChanged
• Window.IsKeyboardFocusedChanged
• Window.LostKeyboardFocus
• Window.Closed
• Application.Exit

When application/window loses focus (user switches to another application):

• Window.Deactivated
• Application.Deactivated
• Window.IsKeyboardFocusWithinChanged
• Window.IsKeyboardFocusedChanged
• Window.LostKeyboardFocus

When application/window gains focus (user switches back to application):

• Application.Activated
• Window.Activated
• Window.PreviewGotKeyboardFocus
• Window.IsKeyboardFocusWithinChanged
• Window.IsKeyboardFocusChanged
• Window.GotKeyboardFocus

 

When Developing Windows Applications using Windows Forms,

you will most likely find yourself needing to make user of the form’s

events, and this requires you to know when each form event fires.

In this short reference artivle I will show you the sequence of the form

events when the Form is being started and when it is being shut down.

 

When Form Start up

• Control.HandleCreated
• Control.BindingContextChanged
• Form.Load
• Control.VisibleChanged
• Form.Activated
• Form.Shown

When Form Shutdown

• Form.Closing
• Form.FormClosing
• Form.Closed
• Form.FormClosed
• Form.Deactivate

참고

http://wpf.2000things.com/2012/07/30/613-window-event-sequence/

http://www.daveoncsharp.com/2009/06/windows-forms-event-sequence/