Session Expires And User Is No Longer Valid?
Aug 3, 2010
I cache information about the currently logged in user in the session. This info lazy loads whenever a CurrentUser property on my global application class is used. It does this by calling GetUser() on my custom implementation of MembershipProvider, which either loads the user up from the session, or loads the user from the DB and throws the user object in the session.
How should I handle this scenario?
User logs in. Administrator deletes user (or deactivates...the point is they can't log in any more). User's session expires. User navigates to a page or makes a request, or whatever.
Currently if this scenario occurs, NullReferenceExceptions are thrown all over the place, because the ASP .NET framework calls GetUser() which returns nothing because it can't find the user in the database (and there's nothing in the session because it expired).
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Mar 10, 2010
Doing some work with Facebook connect/the RESTful API and for some reason i keep getting this error
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Oct 21, 2010
I simply want to display a message on the login page when the user is automatically redirected there after requesting a page that they were logged in for but their session has now expired. So essentially if the user was working but stepped away for a lunch break without logging out I want the system to tell them why they were sent back to the login page.
Something like "You have been idle for too long so you must log back in".
This has to be easy I am just running into a wall here. I thought about getting the original ticket and reading the expiration date but I'm a little lost.
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Feb 17, 2014
How to Check whether user is valid and authenticated without using Session in ASP.Net ....
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Apr 8, 2016
I am getting two identical errors message when I view my Web page in my browser:
Valid User Session Variable Not Found: System.NullReferenceException for this line:
Code:
Response.Write(Session("ValidUser").ToString & "<br />") <----------
and the same error for this line:
Code:
Response.Write(Session("strEmail").ToString) <-----------
This is the code in that page:
Code:
Protected Sub Page_Load(sender As Object, e As System.EventArgs) Handles Me.Load
Try
Response.Write(Session("ValidUser").ToString & "<br />")
Catch ex As System.Exception
Response.Write("Valid User Session Variable Not Found: " & ex.ToString & "<br />")
End Try
[Code] .....
This the page that users are redirected to after logging on and, after verifying their credentials at the log-on stage, should show 'Hello DonaldDuck@Disney.com, Welcome to my website'.
Do these errors mean that the user cannot be validated in the database?
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Jan 13, 2010
I want to know page name when session expires so that I redirect user to that page after relogin. I am checking session in Master page's page load event
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Nov 16, 2010
I am using Session variable throughout in my application and my timeout is 1 hour. Here I need to catch the exception for session expires in any global way across my application.
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Aug 16, 2010
I want to display a pop up when the session expires. I'm using the MVC 1 and jquery. I've some .aspx and some .ascx pages.
How do i achieve that? Right now, the application redirects to Login page. But before login page shows up, i want to display the message.
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Aug 18, 2010
How does session expires when the browser is closed?
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Aug 29, 2010
i want your opinion about the
Response.AddHeader("Refresh", Convert.ToString((Session.Timeout * 60) - 20))that i have seen in some sites that is used for refresh the page every time a little bit before the session expires
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May 2, 2010
I am using a timer in the master page of my web site in order to keep a 'status bar' up to date with all sorts of information.The issue is that the whole point of session expiry goes to waste, because a postback is always being made (although asynchronic) to the server.
How can i still expire the session after a wanted period of time?
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Mar 18, 2011
I have a simple ASP.NET 4 site. I am using Forms Authentication. I have Session timeout set to 20 minutes. Also when the user authenticates I set the AuthenticationTicket to expire in 20 minutes. So normally everything works fine. If there is more than 20 minutes of inactivity and the user requests a page on the site they are redirected back to the Login page as I would expect.
However, let's say that the user is on a page that contains a form. Then they wait 25 minutes. Then they go to submit the form. Instead of being redirected back to the Login page, the site attempts the postback and I immediately get errors because there is code in the postback that attempts to get information out of Session.
It seems like ASP.NET does not redirect back to Login on postback if the AuthenticationTicket and Session has expired. How can I handle this? I hope I don't have to write special code on each page.
ADDED: web.config code
<location path="ForgotLogin.aspx">
<system.web>
<authorization>
<allow users="*" />
</authorization>
</system.web>
</location>
<system.web>
<authentication mode="Forms">
<forms loginUrl="~/Login.aspx"></forms>
</authentication>
<authorization>
<deny users="?" />
</authorization>
</system.web>
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Jan 7, 2011
i have a website and i know that the session expires and it gives me instance of object not set error.
I have a masterpage could i do it in there on page_load?
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Sep 14, 2010
I am trying to delete Files and Directory through ASP.NET3.5 (C#)web application.
But as soon as DirectoryFile is deleted It automatically redirects me to Login Page.
It means I am lossing my session on deleting File/Directory.
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Jun 4, 2010
I have Page1 having Button1.
Page2 having Button 2 and an ascx control UC1. UC1 has a Button 3. Page2 is a modal dialog ( window.showModalDialog )
on Click of Button1 open Page2(modal dialog).
Page2 has UC1. UC1 has a button B3. On click of B3,instead of directly going to B3_click event, another post back happens. Thereafter opens login.aspx in another browser ( It is losing Session containing UserDetails as well as other session details).
now even If I continue entering Username and password, page2 reloads again in the new browser.
I am totally lost.
1) I do not know why UC1 button click makes another postback and thereafter opens up into another page losing all the sessions!!
I want to retain teh sessions till i go back to page1.
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Oct 7, 2010
In my asp.net website I am creating a session upon user login and I would like to perform some operations in the database just before this session will expire.I am having problem in determining where should I write code and how will I know the session is going to expire.
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Feb 6, 2011
I have this setting in web config for session.
[Code]....
On localhost works well. On the hosting server expires very quickly. Sometimes after a minute, and sometimes after a few minutes.
I tried mode="StateServer" and mode="SQLServer", but first works the same, other doesn't work. The next problem is that End_Session in global.asax doesn't executes if mode is not InProc. And I need this.
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Oct 14, 2010
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<sessionState timeout="120"></sessionState>
<authentication mode="Forms">
<forms name="myappCookie" loginUrl="~/index.aspx" timeout="120"/>
</authentication>
doesn't work for me since i don't have allow or deny settings, since my app doesn't need authentication.
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Mar 3, 2011
I'm facing a great problem in session. My session expires after every 4-5 minutes. Firstly I checked my web hosting settings. I increased session timeout to 50000. In my web.config I wrote :
[Code]....
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Feb 3, 2011
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Apr 3, 2011
I am not sure what the event is called but I'm trying to get it so if your not logged in you can't manually type the page name in the bar at the top. I need to find a way so it will always redirect you to the login page if you haven't signed in.
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Jun 15, 2013
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<sessionState mode="InProc" cookieless="false" timeout="120"></sessionState>
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Jun 18, 2010
We currently have a public-facing .Net 4 application running with the default session timeout value of 20 mins. Are there any significant security risks with lengthening that to 60 mins or longer?
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Feb 13, 2010
I'm using Forms authentication in my application but I'm not using the Membership that's built into .NET.
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