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POWhy Doesn't Asp.Net Session.Clear() Work On Close Tab When I See It Run?
 

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  1. POWhy Doesn't Asp.Net Session.Clear() Work On Close Tab When I See It Run?
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    <p>I have been attempting to get a clean break from a session when a tab is closed for a workplace system used by supervisors and others. I am successful when the person logs out - all is cleared. However, when a tab is closed, it can be reopened at will as if session.clear() was never called.</p> <p>I am using this javascript:</p> <pre><code> $.ajax({ type: "POST", url: "default.aspx/EndSession", data: "{}", contentType: "application/json; charset=utf-8", dataType: "json", success: function (msg) { } }); </code></pre> <p>to call this web method:</p> <pre><code>[WebMethod] public static string EndSession() { HttpContext.Current.Session.Clear(); HttpContext.Current.Session.Abandon(); HttpContext.Current.User = null; FormsAuthentication.SignOut(); return ""; } </code></pre> <p>I set a breakpoint and watch the code execute as I step through it and it returns. The tab closes, and then I right-click and select "reopen closed tab" and the page comes back and the session is still active.</p> <p>I see <a href="https://stackoverflow.com/questions/1921941/close-kill-the-session-when-the-browser-or-tab-is-closed">here</a> ppl saying this is not possible, but don't understand why, since the code is running on the server - I'm watching it run, and the session is not cleared. I would have thought this was the point of an explicit call to "Session.Clear()" and "Session.Abandon()". The same code in the logout Page_Load works great.</p> <p>Why? What am I missing? Is the session clear being thrown out after running because the tab is closed?</p> <p>Thanks!</p>
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    1. USRobb Sadler
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    1. COSee [this answer](http://stackoverflow.com/a/14913314/151212). IMO, the only real solution is to store something server-side and not depend only on session cookie.
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    2. COHeading this way now. There is a possibility that the session will be open in more than one tab, so there is the added complexity of that, but for now I am going to start with the suggestions you pointed to. Thanks for the info - I will post back when I have success (hopefully).
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      1. USRobb Sadler
 

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