how to clear session variable after a user control unload

2.4k Views Asked by R.Akhlaghi At 07 November 2015 at 06:25

i am using a session variable in a usercontrol (ascx), how can i remove that from session when user close webpage or redirect to other pages?

Original Q&A

There are 1 best solutions below

user2771704 On 07 November 2015 at 07:21 BEST ANSWER

For redirect you can use this code when redirected page/view loaded:

if (!IsPostBack)
{
   Session.Clear(); //if you want clear session
   Session.Remove("myVar");//if you want clear just 1 session variable
}

With closing the page situation is harder, because HTTP is a stateless protocol, so you server does not know if user closed their browser or they just simply left an opened browser window for long time.

Уou can use Ajax to handle clear session on tab close like below.

 <body onunload="unlodFunc()">

    <script>
    function unlodFunc()
    {
      $.ajax({
        type: "POST",
        url: "MyPage.aspx/ClearSession",
        data: "{}",
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        success: function(data) {

        }
    });
    }
    </script>

C# code:

[WebMethod]
public static void ClearSession()
{
    if (Session["myVar"] != null)
    {
        Session.Remove("myVar");
    }
}

Also you can check this link.

how to clear session variable after a user control unload

There are 1 best solutions below

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