State Management :: Session And Response.Redirect?
Jan 4, 2011
I have an issue of losing an InProc session variable when I call Response.redirect. I have seen a number of posts related to this, but haven't found a solution. My code is essentially:
Session("MyVariable") = "SomeBoolean"
Response.Redirect("NewUrl.aspx", false)
When I try to read Session("MyVariable") on the NewUrl.aspx page, it doesn't exists.
What's odd is that this doesn't typically happen in my local environemnt, but hapens quite often, if not all the time, on the shared server this application resides on. I saw some info about web farms and load balancing which could cause an issue. I am fairly certain this app is not part of a web farm.
A little background, in case there is a better method than using Session State...
I have created the ability for an administrator of this applicationto log in as any other user using a "Skeleton Key" password. When the admin does this, I store a boolean in session which refers to the fact that they are logged in and "Impersonating' another user. This gives the admin additional access that the user would not normally have. Anyhow, that is why I store a sessoin variable.
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Similar Messages:
Aug 17, 2010
is it possible to create a new Session Id using C# and without using a Response.Redirect(...Page ... ). I want to create a new session Id on page load.
Reasons for doing so:
I have a testing application that creates IFrames to act as users. the problem I have is that with Multiple Instances (or Multiple IFrames running the same application "Default.aspx") all IFrame's are using the Same Session ID. I have variables stored in the Session ID that I need to be seperated from IFrame to IFrame. Ex:
IFrame 1 gets passed a query string of a client ID "1"
IFrame 2 gets passed a query string of client ID "2"
WHen the IFrame 2 gets loaded the session state of IFrame 1 inherits the IFrame 2's session's making the Client ID in Session 1 = "2". See what I am getting at?
I want to be able to have each IFrame create its own Session State. I guess there is 2 questions to this, 1.) is it possible to create a new Session State by abandoning the original and by doing so will that abandon both session ID's and just create an ID for both IFrames being the same ID? 2.) How can I do this if it is possible :-)
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Oct 25, 2010
This is weird. In my newly developed chat application, when I invoke Response.Redirect, I am losing my session data. What is particualrly odd is that this sometimes seems to occur after a slight delay, so I reach the page, and then the session info gets lost momentarily thereafter. Mostly though it seems to get lost immediately. I have of course googled this issue, but yet to find anything that speaks to my problem. SessionState is in InProc mode. Session state has been working fine for me until this unexpected problem, so everything is configured right. So far the only workaround I can think of is to use a link instead of a button, and use javascript to call a server-side function on onclick to do the work I need to do before the link gets invoked. Messy, and I'd rather not go that way unless there's no alternative.
Just to preempt one red herring, I do use Response.Redirect(<address>, false).
The problem occurs both on the testing and production servers. I'm running ASP.NET 3.5 on IIS7.
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Jan 25, 2011
I need to make my asp.net session cookie as secure but whenever i check user authentication and after that i am trying to set cookie to true then my session lost my user information and so it always redirect login page. I am settings user to HttpContext.Current.Session["user"] and check every time, is user is valid and if valid then move ahead. but before that i make my asp.net session cookie as true.
[Code]....
but after that i observe that somehow "Session_Start" event gets called.
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Jul 6, 2010
Our project contains the folder structure. when I redirect to page in different folder, session automaticaly ends. How can I prevent this?
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Jul 30, 2010
In certain pages when i try to rediect to a perticular page the Session automaically gets assigned to null, have no idea why is this happening.-No where I'm using Session.Remove or Session.RemoveAll.-Also not even using EnableSessionState="true" or "false" as by default it will always be true, I know...
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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 20, 2010
I am creating web application. In that I want to set session timeout (not idle timeout). If a user logged in that time the session time will start and it automatically should detect session timeout the page should redirect to another page. How can I acheive this.
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Oct 25, 2010
If a normal session timeout occurs we could handle the session timeout.
But say we are using a lot of ajax calls, webhandlers etc. How would we catch session timeout here and redirect to error/login page.
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Feb 21, 2011
I'm using sessions to track user name. I assign Session["userName"] in my login procedure. The sessionn gets timeout in about 15 minutes. What I need to do is, if the session timeouts I need to redirect the page to the Default.aspx page.
How can I do this? Any code example would be great.
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May 17, 2010
We have a web app running .net 1.1 that users must login to access (uses FormsAuthentication). At one point, the user submits a form that is handled by a separate web app on the same website but in a different directory (running .net 2.0 and not requiring authentication). When the user submits the form and is redirected to this other page they have some options including returning to the previous web app.
We need our users to stay logged in to the first web app so they do not have to log in again when returning. This works fine on 3 out of four computers, but the fourth computer is asked to log in when they hit the return button (by reviewing the active cookies we see that when it returns to the original web app, the FormsAuthentication cookie is missing)
why this cookie would disappear on one machine but not the others? I am going through IE settings now but the machine has the problem in IE and Chrome (not sure if this would be a shared setting) If it is an IE setting is there a way to make this work without requiring the user to change their settings and without switching to cookieless sessions?
Here is the authentication part of web.config
[Code]....
And if it makes a difference, the redirect and form action property use a the full path, would using a relative path likely change anything?
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Sep 7, 2010
i have 2 page,
1.login.aspx --- 2.welcome.aspx
in my login.aspx im storing username into sesssion as below:
Session["usernm"] = txtUsername.Text;
in my welcome.aspx page
in page_load event
if (Session["usernm"]==null)
{
Response.Redirect("Login.aspx");
}
here if i manulally paste the url ( http://localhost:4125/Loginado/welcome.aspx) it should go to login.aspx for user credentials
but its going directly to welcome.aspx page.
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Jan 8, 2010
I have one website in which there is one page along with one ascx as registered into it. In the ascx where user can add some order details and click on "Make Payment" button, then there are following 2 cases...Case I: If user was not logged in, then a modal popup will open which has login ascx with 2 buttons Register & Login. In this case user either Login or Register and continue with "Make Payment".
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Nov 18, 2010
I read the solutioin for this error, at the following link :http://forums.asp.net/p/1046935/1576341.aspxbut I am still not clear what exactly causes the error. I have two doubts :1. Can anyone please elaborate a bit on this issue, with any example ????2. Is there any drawback of this approach ?
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Nov 5, 2010
Customer were getting "View State Validation Error" due to worker process recycling at our production webserver and to fix that i applied machinekey and then move my Session state Mode from In Proc to State Server to retain session data and not kick out the customer to relogin. I had serialization issue with one object which has to be stored in session but when i moved it out of session i could able to resolve the issue.
But doing all these i was partly successfull in keeping the user in their session when Worker Process recycle event occurs.I was able to refresh the page or make a post back by clicking the refresh button and also able to retain the session values. But the Problem occurs when sending asynchronous request to server which we do periodically every 15 minutes from the moment the user logs in.The web page doesnot update data on website when sending asynchronous request.By Debugging I found at this particular code point it fails to make a postback which is required.
<%=GetHintFromServer%> (When there is no Worker Process recycle i t gets replaced by
WebForm_DoCallback('__Page',message,ShowHint,null,null,false) on postback) Everything works fine when there is no Worker Process Recyling but when it happens looks like sending request asynchronously using javascript fails .Remember When I make a post back by manually clicking submit button everything works fine.
SendRequest(Asynchronous)
function SendRequest(msg, isBusy, chartMsg, vesselMsg)
{
try
{
//confirm("msg"+msg+"isBusy"+isBusy+"chartMsg"+chartMsg+"VesselMsg"+vesselMsg);
_busy = isBusy;
if(chartMsg != null)
{
//confirm("chartMsg"+chartMsg);
_element.SetMessage(true, chartMsg);
}
if(vesselMsg != null)
{
confirm("chartMsg"+vesselMsg);
_element.ShowVesselLoading(true, vesselMsg);
}
_stuckWatchdog = setTimeout( "ClearPendingRequest();", 60000);
var message = msg;
var context = '';
<%=GetHintFromServer%>
}
catch(e)
{
alert( "Exception error on SendRequest(): " + e);
}
}
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Dec 12, 2010
I am new to .net 4.0 and am using EF Model and SessionState Mode=SqlServer and I am getting this error below:
Unable to serialize the session state. In 'StateServer' and 'SQLServer' mode, ASP.NET will serialize the session state objects, and as a result non-serializable objects or MarshalByRef objects are not permitted. The same restriction applies if similar serialization is done by the custom session state store in 'Custom' mode.
I checked the stack trace and its complaining about
[assembly: global::System.Data.Objects.DataClasses.EdmSchemaAttribute()]
[assembly: global::System.Data.Objects.DataClasses.EdmRelationshipAttribute("PoplarGroveModel", "tblMenuRole", "tblMenu", global::System.Data.Metadata.Edm.RelationshipMultiplicity.Many, typeof(PoplarGroveDataModel.Menu), "tblRole",
[Code].....
I marked it as serializable but then it complains about System.Data.Objects.ObjectContext is not marked as serializable and hence throws the same error.
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Apr 5, 2010
Our ASP.NET App uses ASP State Session Management and has been rebuilt about 2 years ago [With .NET Framework 2.0]. We are currently in .NET framework 3.5 and have moved to SQL Server 2008 - but continue to use the same ASPState database. The State database has been upgraded to SQL Server 2008. Since then we have are seeing timouts/locks on ASPStateTempSessions table. I am wondering if we have to rebuild this database from scratch with some newer scripts?
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Jan 21, 2011
I'm using the following line of code to display the number of users currently logged on:
lblNoOfUsers.Text = Membership.GetNumberOfUsersOnline().ToString()
I'm still debugging my application so it's on the local server. As I debug and stop then debug again, eventually lblNoOfUsers.text turns to "0" instead of "1", even as I'm navigating my application. It only turns to "1" again if I log out and sign back in. It's almost as though Membership.GetNumberOfUsersOnline my login are referencing two different session states. How is this possible? Does asp.net create a new session state cookie each time I start debugging?
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Feb 2, 2011
I am trying to set a session variable in the global.asax file and keep running into the problem that the Session is null.
I am running my application in VS2008 and using asp.net 3.51.
Here is my code:
1. In my web.config file I have enabled the session state and added the following line;
<sessionState
cookieless="false"
mode="InProc"
timeout="60"
></sessionState>
2. In the Session_Start procedure in the Global.asax file I set the session variable to a default value.
[Code]....
My problem seems to be that when the Application_Error procedure is executed the session state is lost.
Does anyone know why the session state isn't available in the Global.asax file.
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Nov 1, 2010
All we have a global ships position tracking website which runs smoothly until IIS application pool recycles.When there is workerprocess recycling looks like session state expires as a result i loose all session data and when customer clicks refresh button he is redirected to login page.
In web.config Session state mode is set to InProc so i changed it to State Server but to my luck i have MAP object which is not serialiazable which is causing the maps from not appearing on the website.I tried adding serializable attribute to the object class but still not succesfull.Our website is accessed by our customers whose count is more than 1000.
Changing the session state mode from InProc to StateServer can really slow down the response time so
Is it good to go further fix the serailizable issues and move to state server?.
Is there any way I can retain my session data when application pool recyles?..
Stopping Application pool from recycling may not be a good idea considering health factor of web server.
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Jul 10, 2010
I have configured my web application session timeout to 30 mnts and kept the code
Response.Redirect("Login.aspx")
in the Session End. But when ever my session is ending its giving exception "HttpException was unhandled by user code, Response is not available in this context.".
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Apr 29, 2010
I have a clear button and a textbox in an aspx page. I set the session variable in this page as
String str = Textbox1.Text;
Session["TypeIds"] = str;
and I clear the sessions in a clear button event as
Session["TypeIds"]=null;.
Then when the user types some value in the textbox ,on Response.Redirect on another aspx page, the session variable returns null values.It does not retain its session state. The session state has to be maintained in the next page. Is it because this clear button event and setting explicitly to null creates this problem?
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Oct 27, 2010
The fix for this error message is to run [Code]..... I have run that uptown, downtown and in my lady's chamber and it does no good, although it never complains. Are there any other possibilities?Details:
IIS Server: v5.1 running on XP. SQLServer 2005 running on a different XP box.Microsoft .NET Framework Version:2.0.50727.3615; ASP.NET Version:2.0.50727.3618 There is an ASPState database on the server, containing only two tables: [Code].... and [Code]..... I did not use [Code].... when I ran [Code]....
.
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Dec 3, 2010
I am building a web app that is limited to one database, therefore I cannot use the ASP.NET config tool. As a quick means of getting this app online, I tried to use a simple session variable. The login page verifies the user's credentials, and if they pass, it sets the session variable to a certain value. All other pages check in the page_load event whether or not the session variable is equal to that value. The problem is that once being logged in for a short while and sending and recieving some data, the session variable resets, and I'm returned to the login page to repeat the process. Here's the basic code from my webforms:
[code]....
Is there some setting I need to change in the web.config file to adjust the cookie timeout or is that only for the config tool authentication methods?
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Feb 13, 2011
Just wanted to know in which type of web applications we can use or its good to use the out proc (SQL Server, State Server) session mode?
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