Asp.net Web Form Application Page life Cycle

Page life cycles is called how different Events are processed of Web Form page

There are mainly eight Steps of Page life cycle

1. Page Request
2. Start
3. Page Initialization
4. Page Load
5. Page Validation
6. Post Back Event Handling
7. Rendering
8. Un Load

Page Request : -

When the Page is requested by the User to the Server then the compiling is determined by Asp.net

Start : -

In this stage Page Properties are set. In Asp.net Page is an object with properties

Page Initialization : -

In this stage page control became available and themes are applied

1. Page_PreInit()

Page Properties became Available like

Page.IsPostBack
bool isPostBack=Page.IsPostBack

But at this stage if the form is submitted than you will get the null values for Form fields

2. Page_Init() — You can set Label Value

 Label1.Text

3. Page_InitComplete() — Every thing has been initialized this event can be used for task that needs first to be initialized

Page Load :-

In this stage Form Values are Available after Submission

1. Page_PreLoad()
2. Page_Load()
3. Page_LoadComplete()

Page Validation : -

In this step page Validation is applied.

Post Back Event : -

After Form is submitted then this Stage is set to be true

Rendering : -

View State is Saved for the Page (html)

Un Load : -

Page Properties are Unloaded if you want to change some Label or Control values after all the functionality is done then you can achieve in this stage.