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Webconfig Set the timeout is a big value, but the validity of the session is still not maintained for an hour.
Check, mainly said mode= "InProc" words, session is placed in the process, so the most easily lost. If placed in services and databases, it will stabilize. Do a lot of people put in the service?
Is it necessary to set cookieless to true?
http://blog.csdn.net/kaifa123/article/details/6890106
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. NET Session Timeout control
http://blog.csdn.net/freeman127/article/details/8633449
After discovering that the <sessionstate mode= "InProc" timeout= "></sessionState>" is added directly to the Web. config file, the session will soon expire, After checking the information on the Internet, the following code can be used to control the session timeout length effectively:The default timeout for the session is 20 minutes, and the page will time out without action for 20 minutes. It can be webconfig and modified in the inside.
I've set it to 60 minutes, even though the default is 20 minutes, and sometimes it's not a few minutes.
Solution for ASP. NET session Timeout Collection The first method:
I have a good idea. And always use it, it feels so cool.
1, in the Web. config add: <sessionstate mode= "StateServer" stateconnectionstring= "tcpip=127.0.0.1:42424" cookieless = " False "timeout=" statenetworktimeout= "14400" ></sessionState>
2, click on the lower left corner of the computer, run the input services.msc enter to find the ASP. NET state Service, double-click, change to Automatic, and enable.
Where statenetworktimeout the connection between the client and the server for a long period of time without transmitting information. I set the 14400, that is: 14400/60/60=4 hours
Disadvantage: The session is stored in the server with the ASP. can cause strain on server resources. If you have money, you'd better buy a server dedicated to session services. Of course, it doesn't matter for small applications. Have done a small log system, log, as implies meaning, is the long-term open web page, something to the above record, running for a year, not because the session has been a problem.
Second approach (recommended):
1) Create a file savesession.js (Xhbmj:js better rewrite to support more browsers, with jquery best) function createxmlhttprequest () { VAR xmlhttp; try{ xmlhttp = New ActiveXObject ("Msxml2.xmlhttp"); IE 5.0 version } catch (e) { try{ xmlhttp = new ActiveXObject (" Microsoft.XMLHTTP "); IE 5.5 version } catch (e) { try{ xmlhttp = new XMLHttpRequest (); Browsers that do not support ActiveX space } catch (e) {} } } return XMLHTTP; }
Function Reconnect () {var url= ' reconnect.aspx ' Xmlhttp=createxmlhttprequest () xmlhttp.open (' GET ', url, True) Xmlhttp.send (NULL)//requires only contact with the server and does not require return data, therefore, no return processing}
function Refreshme () {setinterval ("reconnect ();", 60000);//This time adjusted according to the actual situation}
2) Add <script language= "JavaScript" src= "Savesession.js" ></script> on the page that needs to maintain session, in <body> Inside add onload= "Refreshme ();" 3) Create a reconnect.aspx page that can have no content for any. aspx pages.
A third approach: self-creation
Create an empty page, set the page to automatically refresh, you can use the timing of the HTML refresh, CS file to write something like:
String str = session["LoginID"]. ToString ();//preferably a judgment null
Embed this page as an IFRAME in a long-acting page, setting the width of the iframe to be 0
The first approach is yes, you have a server that is typically configured like this.
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. NET Session Timeout control
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