logout user in onbeforeunload and send log to server
I'm running a silverlight web app and I want to log the user out if he closes the browser, change site etc. in case they forget to click the logout button and I want to do this in the web page that hosts the silverlight.
I tried following a tutorial: adding webservice.htc and calling the web service using javascript which looks like this
html body tag:
<body id="service" style="behavior:url(webservice.htc)">
script:
window.onbeforeunload = function(){
// set web service
service.useService(
"https://myhost/myService/service.svc?wsdl",
"myService");
// call web service method
service.myService.callService("LogInUser", -1);
}
the onbeforeunload does get called if i just try to show a message like
return "onbeforeunload called!";
EDIT: My web service is in SOAP an开发者_StackOverflow中文版d would like to consume in using javascript or or another option in my ASP.net 3.5 hosting the silverlight and is supposed to be viewed in IE8+. Any options that could complete this?
I'm not familiar with the method you show, but I assume the document simply gets unloaded before anything can happen in your web service.
The only cross-browser way to do this that I know of is to make a synchronous Ajax call. More here, or in jQuery use the async: false flag.
I'm not sure whether this is a good idea at all though. For example, a user might have the same session open in a different browser window. With your method, closing one of them will log them out of both of them. Also, a synchronous Ajax request can freeze the browser if the network goes down.
加载中,请稍侯......
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