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POsession expiring and throwing exception
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  1. POsession expiring and throwing exception
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    copied!<p>I have a problem with session expiry. Firstly it expires every 20 minutes and it throws an error...</p> <p>I tried to fix it by:</p> <pre><code>if (Session["userName"].ToString() == null) { Session.RemoveAll(); Response.Redirect("~/Login.aspx?sessionError=" + "*Session Expired on pageload PleaseLog in again"); } </code></pre> <p>But I get the following error:</p> <blockquote> <p>Object reference not set to an instance of an object. </p> </blockquote> <p>My stack trace is:</p> <blockquote> <p>[NullReferenceException: Object reference not set to an instance of an object.] copiunGUI.Site1.checksession() in C:\Users\jagmit\Documents\Visual Studio 2008\Projects\copiunGUI\copiunGUI\Site1.Master.cs:224 copiunGUI.Site1.TreeViewMain_Unload(Object sender, EventArgs e) in C:\Users\jagmit\Documents\Visual Studio 2008\Projects\copiunGUI\copiunGUI\Site1.Master.cs:210 System.Web.UI.Control.OnUnload(EventArgs e) +8681754 System.Web.UI.Control.UnloadRecursive(Boolean dispose) +252 System.Web.UI.Control.UnloadRecursive(Boolean dispose) +188 System.Web.UI.Control.UnloadRecursive(Boolean dispose) +188 System.Web.UI.Control.UnloadRecursive(Boolean dispose) +188 System.Web.UI.Control.UnloadRecursive(Boolean dispose) +188 System.Web.UI.Page.UnloadRecursive(Boolean dispose) +23 System.Web.UI.Page.ProcessRequestCleanup() +43</p> </blockquote> <p>My <code>web.config</code> is:</p> <pre><code>&lt;authentication mode="Forms"&gt; &lt;forms loginUrl="Login.aspx" defaultUrl="~/Default.aspx" name="Cookie" timeout="10080" path="/"&gt; &lt;/forms&gt; &lt;/authentication&gt; &lt;authorization&gt; &lt;deny users="?"/&gt; &lt;allow users="*"/&gt; &lt;/authorization&gt; </code></pre> <p>Please help.......</p> <p>Thanks</p> <p>Thanks for ur input guys...</p> <p>I tried this:</p> <pre><code>if (Session["userName"] == null) { Session.RemoveAll(); Response.Redirect("~/Login.aspx?sessionError=" + "*Session Expired on pageload PleaseLog in again"); } </code></pre> <p>But i get the error:</p> <blockquote> <p>Response is not available in this context.</p> </blockquote>
 

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