?	Init() - when the page is instantiated, 
?	Load() - when the page is loaded into server memory, 
?	PreRender() - the brief moment before the page is
displayed to the user as HTML, 
?	Unload() - when page finishes loading. 

The above answer is wrong

Init()
Load()
PreRender()
Unload()

init();
Load();
Pre-render();
Unload();

1)Page request - determines if it needs to be raised or compiled
2) start  - if it is a new request or post back
3) Page initialization - 
4)Load - if postback,control properties are loaded with
values of postback
5)validation - individual controls are validated 
6) Postback - event handling 
7)render  - saves the view state data before rendering
8) unload

The methods which are getting triggered while page load are:

1. Load viewstate
2.Load psotback datas.