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.NET Forum / ASP.NET / General / October 2007What happens after runtime?
The different Page events in the page life cycle like Page_PreInit, Page_Init, Page_Load etc. - are they different stages of the runtime process? Does a server send back the HTML output of an ASPX page to the browser immediately after the runtime or are there any processes involved in between the runtime & the time when the server sends the HTML output back to the browser? Thanks The PreInit, Init, Load are all events that are raised at different times during the processing of a page. The output to HTML usuually happens, I believe, during the Render event. You should be able to google for a some good information on the page event hierarchy. User controls will also have a similar hierarchy though they won't have all events. Knowing which events fire at which times is very useful, especially when trying to communicate between pages and user controls since passing information between controls and a page can be a tricky matter of timing.  SignatureHope this helps, Mark Fitzpatrick Microsoft MVP - FrontPage > The different Page events in the page life cycle like Page_PreInit, > Page_Init, Page_Load etc. - are they different stages of the runtime [quoted text clipped - 6 lines] > > Thanks > The PreInit, Init, Load are all events that are raised at different times > during the processing of a page. The output to HTML usuually happens, I [quoted text clipped - 26 lines] > > - Show quoted text - Thanks Mark for the response. Actually I am aware of the various events that are raised when a request (new or postback) is made to a server. What I would like to know is the time during which these events fire - is that time known as the runtime? For e.g. in late binding, variables that are of type "Objects" are not processed until runtime. Hence one can use them to represent any type of object one wants. This means such variables are processed between the runtime & the time when the server sends the compiled page back to the client browser. Do the different Page events fire during this time? What happens during this time? Thanks once again, Regards, Ron > What I would like to know is the time during which these events fire - > is that time known as the runtime? I think perhaps you're getting bogged down by nomenclature... Runtime is a term which is used to denote when an application (WinForms or WebForms) is actually running as opposed to when it is being designed / developed... E.g. when you add webcontrols to your markup in the designer, they are said to be created at *design-time*. However, when you add controls dynamically while the app is actually running, they are said to be added at *runtime* because they don't exist until the app is runnning... No events fire at design-time, because the app isn't actually running at design-time... Runtime simply means "when the app is running"... SignatureMark Rae ASP.NET MVP http://www.markrae.net > <r...@rediffmail.com> wrote in message > [quoted text clipped - 24 lines] > Mark Rae > ASP.NET MVPhttp://www.markrae.net > I think perhaps you're getting bogged down by nomenclature... I guess you are right..... I learnt the term "late binding" from a book which I am using to learn ASP.NET. As stated in the book (& as stated in my previous post), late binding means variables of type "Object" are not processed until runtime but then variables of other data types are also not processed until runtime i.e. until the app is run. Variables, let them be of any data type, will be processed only when the app is being run (obviuosly never at design time). So why does the book specifically mention that *variables of "Object" data type are not processed until runtime*? Also, if I am not wrong, it can be concluded from the statement given in the book that variables of data types other than the "Object" data type are bound early (early binding) Irrespective of whether variables are bound early or late, the binding takes place during runtime. So does late binding mean variables of "Object" data type are processed only AFTER variables of all other data types have been processed? If not, then what's the difference between late binding & early binding? Ron > I learnt the term "late binding" from a book which I am using to learn > ASP.NET. As stated in the book (& as stated in my previous post), late [quoted text clipped - 4 lines] > never at design time). So why does the book specifically mention that > *variables of "Object" data type are not processed until runtime*? See below... > Also, if I am not wrong, it can be concluded from the statement given > in the book that variables of data types other than the "Object" data [quoted text clipped - 4 lines] > processed? If not, then what's the difference between late binding & > early binding? Early binding and late binding were important before .NET, but are largely irrelevant now... Early binding means defining a variable of a specific type because you know at design-time what type of variable you need... DataSet MyDataSet = new DataSet(); Late binding means defining a variable of a non-specific type (usually an Object variable) because all you know at design-time is that you will need a variable of one sort or another, but can't know what *specific* type until runtime... object MyDataObject = null; // design-time protected void Page_Load(object sender, EventArgs e) // runtime { if (SomeCondition) { MyDataObject = new DataSet(); } else { MyDataObject = new SqlDataReader(); } } SignatureMark Rae ASP.NET MVP http://www.markrae.net Please review the ASP.NET page lifecycle : http://msdn2.microsoft.com/en-us/library/ms178472(VS.80).aspx Juan T. Llibre, asp.net MVP asp.net faq : http://asp.net.do/faq/ foros de asp.net, en español : http://asp.net.do/foros/ ====================================== > The different Page events in the page life cycle like Page_PreInit, > Page_Init, Page_Load etc. - are they different stages of the runtime [quoted text clipped - 6 lines] > > Thanks Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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