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How can I clear asp.net session value in OnUnload event in javascript

Question:

I'd like to clear ASP.NET session value when browser closed. I've onunload function defined in my html page, but I don't know how can I clear session value in this Javascript method ?

<body onunload="myUnloadFunction()"> <script> function myUnloadFunction() { // Needs asp.net session code here } </script>

Please let me know Is it possible else any other preferable way of doing.

Answer1:

Try this:

Code-behind:

[WebMethod] public static void ClearYourSessionValue() { // This will leave the key in the Session cache, but clear the value Session["YourKey"] = null; // This will remove both the key and value from the Session cache Session.Remove("YourKey"); }

JavaScript:

$.ajax({ type: "POST", url: "PageName.aspx/ClearYourSessionValue", data: "{}", contentType: "application/json; charset=utf-8", dataType: "json", success: function(msg) { // Do something interesting here. } });

If you want more information about ASP.NET AJAX Page Methods and how to invoke them via AJAX then read <a href="http://encosia.com/using-jquery-to-directly-call-aspnet-ajax-page-methods/" rel="nofollow">Using jQuery to directly call ASP.NET AJAX page methods</a>

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