Question

in an asp.net application I have a Jquery function.

I need to check if the session has timeout something like this

function Myfunction() {
    if(FuctionHasTimedOut)
    {
        return 1;
    }
    else
    {
        return 2;
    }
}

How to do that? thanks a lot for any help

Answer 1

I would use a PageMethod for this. Here’s some code I found here:

[WebMethod]
public static bool HasSessionTimedOut()
{
    HttpSessionState session = HttpContext.Current.Session;

    // I put this value into Session at the beginning.
    DateTime? sessionStart = session[SessionKeys.SessionStart] as DateTime?;

    bool isTimeout = false;

    if (!sessionStart.HasValue)
    {
        isTimeout = true;
    }
    else
    {
        TimeSpan elapsed = DateTime.Now - sessionStart.Value;
        isTimeout = elapsed.TotalMinutes > session.Timeout;
    }

    return isTimeout;
}

And this is my Javascript:

<script type="text/javascript">                                   
    $(function() {                                                 
        var callback = function(isTimeout) {
            if (isTimeout) {                           
                // Show your pop-up here...
            }                         
        };                                                         
        setInterval(                                                
            function() {
                // Don't forget to set EnablePageMethods="true" on your ScriptManager.
                PageMethods.HasSessionTimedOut(false, callback);    
            },                                                     
            30000                                                   
        );                                                          
    });                                                            
</script>