C# - Windows Forms Event Sequence

The order in which events are raised in Windows Forms applications is of particular interest to developers concerned with handling each of these events in turn. When a situation calls for meticulous handling of events, such as when you are redrawing parts of the form, an awareness of the precise order in which events are raised at run time is necessary. This topic provides some details on the order of events during several important stages in the lifetime of applications and controls.

Application Startup and Shutdown Events
The Form and Control classes expose a set of events related to application startup and shutdown. When a Windows Forms application starts, the startup events of the main form are raised in the following order:
·         Control.HandleCreated
·         Control.BindingContextChanged
·         Form.Load
·         Control.VisibleChanged
·         Form.Activated
·         Form.Shown

When an application closes, the shutdown events of the main form are raised in the following order:
·         Form.Closing
·         Form.FormClosing
·         Form.Closed
·         Form.FormClosed
·         Form.Deactivate

Windows Forms Event Sequence

Form Start up

	Event	Description
1.	Control.HandleCreated	Occurs when a handle is created for the control.
2.	Control.BindingContextChanged	Occurs when the value of the BindingContext property changes.
3.	Form.Load	Occurs before a form is displayed for the first time.
4.	Control.VisibleChanged	Occurs when the Visible property value changes.
5.	Form.Activated	Occurs when the form is activated in code or by the user.
6.	Form.Shown	Occurs whenever the form is first displayed.

Form Shutdown

	Event	Description
1.	Form.Closing	Occurs when the form is closing.
2.	Form.FormClosing	Occurs before the form is closed.
3.	Form.Closed	Occurs when the form is closed.
4.	Form.FormClosed	Occurs after the form is closed.
5.	Form.Deactivate	Occurs when the form loses focus and is no longer the active form.