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How to avoid session timeout in asp.net

Posted on 2010-09-18
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Last Modified: 2013-11-28
How do I in Javascript manage the session timeout problem of an asp.net app? The hosting company (WebHost4Life) has set a standard session timeout of 90 sec (!!!???) which I am not allowed to override in my web.config file!
I have included an asp:timer control in an updatepanel  (in the master page) which keeps the app alive.
But I get a problem, because I have several updatepanels elsewhere in the app and theese updatepanels (which has updatemode=always) should not be refreshed every time I initiate the session timeout handling (each minute!).
I have seen some javascripts that are said to keep the app alive, but I cannot get them to work
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Question by:Joar
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3 Comments
 
LVL 65

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rockiroads earned 500 total points
ID: 33707933
as this is a common issue there should be plenty of examples on the web

http://www.codeproject.com/KB/session/Reconnect.aspx
(something similar to above lol but in code) http://gchandra.wordpress.com/2007/11/26/prevent-session-timeout-in-aspnet/

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Author Closing Comment

by:Joar
ID: 33708511
I tried this one, but didn't work for me for some reason. Found this one which worked:

<script language="javascript" type="text/javascript">
function fnKeepSessionAlive()
{
    var myurl = "SessionKeepAlive.aspx";

if (window.XMLHttpRequest) {
xhttp = new XMLHttpRequest()
}
else {
xhttp = new ActiveXObject("Microsoft.XMLHTTP")
}
xhttp.open("POST", myurl, true);
xhttp.send("");



window.setTimeout("fnKeepSessionAlive();", 60000);
}

fnKeepSessionAlive();
</script>

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LVL 65

Expert Comment

by:rockiroads
ID: 33708541
sweet. thanks for the update. great post!
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