如何在asp.net页面上使用onUnload事件? [英] How can I use onUnload event on a asp.net page?

问题描述

我倾向于在关闭我的asp.net页面时使用close事件，因为该页面上的Dropdownlist控件上有一个POSTBACK事件，当页面回发将被关闭时.
onUnload事件只是卸载事件，而不是关闭事件，我在Google上搜索，无法找到结果，任何有这种经验的人都可以帮助我吗?或给我一些建议.

I likt to use close event while closing my asp.net page, because there is a POSTBACK event on a Dropdownlist control in that page, when the page postback it will be closed.
onUnload event is just unload event ,not the closing event, I googled ,cant find result, can anyone who has this experience help me? or give me some suggestions.

推荐答案

您可以在javascript的帮助下在客户端访问此事件:

http://www.w3schools.com/jsref/event_onunload.asp [

You have access to this event on client side with help of javascript :

http://www.w3schools.com/jsref/event_onunload.asp[^]

do some AJAX actions in your javascript evenet handler to notify the server.

The other way that may not help you is Session_End in Global.asax file. but if you need an immediate reaction the javascript event handler is very suitable.

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