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Microsoft ASP.NET AJAX Client LifeCycle Events

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During this. event you should free any resources that your code is holding. Microsoft ASP.NET AJAX Client LifeCycle Events.

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Microsoft ASP.NET AJAX Client LifeCycle EventsPage 1Based on Microsoft AJAX Library 1.0 Compiled by Milan Negovan www.AspNetResources.com Last update: 20070601The two main Microsoft AJAX Library classes that raise events during the client lifecycle of a page are theApplicationandPageRequestManagerclasses .The key event for initial requests (GET requests) and synchronous postbacks is theloadevent of theApplicationinstance. When script in aloadevent handler runsall scripts and components have been loaded and are available.When partialpage rendering with UpdatePanelcontrols is enabled the key clientevents are the events of thePageRequestManagerclass. These events enable you tohandle many common scenarios. These include the ability to cancel postbacks togive precedence to one postback over another and to animateUpdatePanelcontrols when their content is refreshed.To add or remove handlers for events raised by theApplicationandPageRequestManagerclasses use theadd_eventname andremove_eventnamemethods of those classes.NoteNoteNoteNote: To handle theloadandunloadevents of theApplicationobject you cancreate functions that use the reserved namespageLoadandpageUnload.function pageLoad() {var prm = Sys.WebForms.PageRequestManager.getInstanc e();if (!prm.get_isInAsyncPostBack())prm.add_begi nRequest (onBeginRequest);}Sys.WebForms.PageRequest Manager EventsinitializeRequestinitializeRequestin itializeRequestinitializeRequestRaised during initialization of an asynchronous postback.beginRequestbeginRequestbeginRequ estbeginRequestRaised before processing of an asynchronous postback starts and thepostback request is sent to the server. If there is a postback alreadyprocessing it is stopped using theabortPostBackmethod.pageLoadingpageLoad ingpageLoadingpageLoadingRaised after a response to an asynchronous postback is received from theserver but before any content on the page is updated.pageLoadedpageLoadedpageLoadedpage LoadedRaised after all content on the page is refreshed as the result ...

Source: aspnetresources.com

 

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