Detect when a session has ended ASP.NET
A problem that I have had in the past is trying to find out when a session has expired within ASP.NET and how to deal with the expired session. One solution is to add the following code into the Page_Init event. You can add this event into a class that inherits the Page class so that you can reuse on more than one page or all pages if needed.
If Not Context.Session Is Nothing Then
If Session.IsNewSession Then
Dim szCookieHeader As String = Request.Headers("Cookie")
If Not String.IsNullOrEmpty(szCookieHeader) And szCookieHeader.IndexOf("ASP.NET_SessionId") >= 0 Then
Response.Redirect("/sessiontimeoutpage.aspx")
End If
End If
End If
If Session.IsNewSession Then
Dim szCookieHeader As String = Request.Headers("Cookie")
If Not String.IsNullOrEmpty(szCookieHeader) And szCookieHeader.IndexOf("ASP.NET_SessionId") >= 0 Then
Response.Redirect("/sessiontimeoutpage.aspx")
End If
End If
End If
This code checks if a new session has been created and if the header has a ASP.NET Session id. This makes sure that we are checking for a session that has just been created.
1 Comment
Leave a Reply
You must be logged in to post a comment.
-
-
-
CodeLab Twitter- codelabnz: @possiblyb9 I now have blackberry for breakfast February 7, 2012
- codelabnz: I have now joined most ppl in indonesia and got myself a blackberry February 7, 2012
- codelabnz: From a bb February 6, 2012
- codelabnz: @bartekmarnane some info on micro orms http://t.co/UDfv5ML7 February 5, 2012
- codelabnz: @bartekmarnane depends on the project, but i found u have 2 be very careful with EF and the type of SQL it generates February 5, 2012
- codelabnz: @bartekmarnane I have been using EF for awhile, good for building apps quickly, but found it performs bad on higher traffic web applications February 5, 2012
- codelabnz: stuff it, I give up on Entity Framework, going to a micro ORM, back to writing SQL queries! I would rather do this than have a slow app! February 5, 2012
- codelabnz: Been too busy for tweeting lately January 21, 2012
- codelabnz: Blog Post: Setting the screen position when visiting previous page with jQuery http://t.co/evuKxVv0 January 17, 2012
- codelabnz: is anyone using Godaddy Cloud hosting? can someone provide their website so I could do a speed test? January 9, 2012
[...] This post was mentioned on Twitter by Hire ASP.Net Experts. Hire ASP.Net Experts said: Blog Post: Detect when a session has ended ASP.NET http://blog.codelab.co.nz/2010/06/30/detect-when-session-ended/ [...]