c# windows form 生命周期 (Life cycle) 事件 顺序

c# windows form 生命周期 (Life cycle) 事件 顺序 窗口 初始化
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微软官方的文档：
form 打开:
•    Control.HandleCreated
•    Control.BindingContextChanged
•    Form.Load
•    Control.VisibleChanged
•    Form.Activated
•    Form.Shown
from 关闭：
•    Form.Closing
•    Form.FormClosing
•    Form.Closed
•    Form.FormClosed
•    Form.Deactivate

control ,change focus:(使用 tab ,shift + tab等等，或是调用Select,SelectNextControl，或是使用当前form的ActiveControl)
•    Enter
•    GotFocus
•    Leave
•    Validating
•    Validated
•    LostFocus

control ,change focus:(使用鼠标，或是通过调用Focus方法)
•    Enter
•    GotFocus
•    LostFocus
•    Leave
•    Validating
•    Validated
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//z 2012-5-16 14:41:02 PM IS2120@CSDN

Move,Load,VisibleChanged 以及 Activated 事件在form显示之前就触发了。

事件的含义：

• Move: This event occurs when the form is moved. Although by default, when a form is instantiated and launched, the user does not move it, yet this event is triggered before the Load event occurs.
• Load: This event occurs before a form is displayed for the first time.
• VisibleChanged: This event occurs when the Visible property value changes.
• Activated: This event occurs when the form is activated in code or by the user.
• Shown: This event occurs whenever the form is first displayed. 
• Paint: This event occurs when the control is redrawn.
• Deactivate: This event occurs when the form loses focus and is not the active form.
• Closing: This event occurs when the form is closing.
• Closed: This event occurs when the form is being closed.

Explain the key events in the lifecycle of the form.

a. Load: fired when form is first loaded in the application
b. Activated: fired whenever the form gets the focus i.e. when loaded first time, restored from the minimize state, whenever the form is brought in front.
c. Deactivated: fired whenever the form looses focus i.e. when form is closed, minimized, when it is in background.
d. Closing: Triggered when application wishes to be closed.
e. Closed: Triggered when application is closed.
f. Disposed: Used for garbage collection.

事件的顺序：
Form Events:

• Construtor
• Load
• Layout
• Activated
• Paint­
• Closing
• Closed
• Deactivate
• Dispose

and for Controls:

• Enter 
• GotFocus 
• Leave 
• Validating 
• Validated 
• LostFocus

另一个版本的form event 顺序

Load
VisibleChanged
Activated
Shown
Paint
Deactivate
Activated
Paint
Formclosing
FormClosed
Deactivate

//z 2012-5-16 14:41:02 PM IS2120@CSDN

 Form Startup

1. OnHandleCreated
2. OnCreateControl
   1. OnLoad
3. OnActivated
4. OnShown

Form Shutdown

1. OnClosing
2. OnClosed
3. OnDeactivate
4. OnHandleDestroyed