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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 session code here
}
</script>

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

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 session code here
}
</script>

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

  • c#
  • javascript
  • html
  • asp
Share Improve this question asked Jul 21, 2013 at 11:59 SmaugSmaug 2,6735 gold badges31 silver badges45 bronze badges 1
  • @KhanhTO - He cannot clear the session value in JavaScript, but he can call back to the server in his JavaScript code as shown in my answer. – Karl Anderson Commented Jul 21, 2013 at 12:08
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1 Answer 1

Reset to default 5

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 Using jQuery to directly call ASP.NET AJAX page methods

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