<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/d0657d09-11e3-4066-be7f-357d142033dc/38DE6730-6E9A-4397-8B14-6F8BC19B3E85/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://geekswithblogs.net/hopeless_nerd/archive/2007/03/30/110420.aspx" href="http://geekswithblogs.net/hopeless_nerd/archive/2007/03/30/110420.aspx" style="font-size: 11px;">geekswithblogs.net</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://geekswithblogs.net/hopeless_nerd/archive/2007/03/30/110420.aspx"><H2> <A href="http://geekswithblogs.net/hopeless_nerd/archive/2007/03/30/110420.aspx" id="viewpost.ascx_TitleUrl">ASP.NET 2.0 New/Fresh Session start check on pages...</A> </H2></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://geekswithblogs.net/hopeless_nerd/archive/2007/03/30/110420.aspx"><P>Usually this page depended the user being logged in, where we stored the fact (that the user is logged in) by keeping a flag in a session variable. Other common scenarios were when a page depended on some value that was derived or set on a different page and transported to the current page through a session variable.<O:P _moz-userdefined=""></O:P></P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://geekswithblogs.net/hopeless_nerd/archive/2007/03/30/110420.aspx"><P>The code to accomplish this was almost always clumsy. In its simplicity, you'd always check for existence of a session variable like following..<O:P _moz-userdefined=""></O:P></P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://geekswithblogs.net/hopeless_nerd/archive/2007/03/30/110420.aspx"><P><FONT color="#008000"><FONT size="2">if (Session["MY_VAR_A"] == null)<BR />    Response.Redirect("ExpiredPage.aspx");<O:P _moz-userdefined=""></O:P></FONT></FONT></P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://geekswithblogs.net/hopeless_nerd/archive/2007/03/30/110420.aspx"><P>ASP.NET Version 2.0 introduced a cool new property in HttpSession class  (Available through the Session property of the Page class), called IsNewSession, that can be used to check if a new session was created for the current request. This made things much simpler. All you have to do now is...<O:P _moz-userdefined=""></O:P></p> <P><FONT size="2"><FONT color="#008000">if (Session.IsNewSession) <BR />   Response.Redirect("ExpiredPage.aspx");<O:P _moz-userdefined=""></O:P></FONT></FONT></p> <P>   <BR />Now life is a little less complicated :)</P></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/38DE6730-6E9A-4397-8B14-6F8BC19B3E85/blog/" title="blog or email this clip"><img src="http://content8.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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