Sessions Lost When The Page Is Reloaded (ispostback = False)?
Feb 27, 2010
I have an asp.net page that sets a few session variables. On my development machine (localhost), I do a postback and the session values are still populated.
When I Reload the page by clicking on the url bar and pressing enter the session variables are still there.
However when i deploy this page to a webserver, the page still retains the session values when doing a postback, but as soon as i click the url and press enter the session values are lost (where the ispostback = false)
But when i press the refresh button the session variables are present (but i do get a popup warning me that the page data needs to be resent!)
i am running IE 7, and the webserver is iis6 what am i doing wrong?!
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Mar 23, 2011
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Feb 8, 2010
When any of my page is idle for about 20 minute, and after that if I hit any button, like Sumit Button or any other button, at this time, Page.IsPostback is again False, and none of the click event is fired and page gets reloaded again.
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But if I enter everything and hit any of the button or Submit button within 20 minute, then everything works fine, Submit button's click event is also gets fired and everything works perfect.
And this is happening in all of my page. I am not sure what configuration is wrong.
But just for more details, I have a master page, I am using Telerik Controls and I have session Timeout set as 60 minute everywhere, in web.config and in IIS settings and in my App_Pool also. On my Master Page, I have ASP:ScriptManager, Tekerik:RadMenu, ASP:ContentPlaceHolder controls and some other controls and javascript code too.
[code]....
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Apr 16, 2010
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Oct 7, 2010
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Sep 29, 2010
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Apr 23, 2010
I have a strange problem, my webform is loading twice.
when i debug i see ispostback is showing false for both times.
what happened to the first time load , and the viewstate.
What can remove all info from viewstate and making the ispostback again to false.
i am having real difficulty figuring out what is causing this problem.
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Mar 24, 2010
I have an application using login-controls.
I have this code in my webconfig:
<authentication mode="Forms" >
<forms loginUrl="default.aspx" protection="All" defaultUrl="index.aspx" timeout="100000"></forms>
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Note. My application works with the remember me function but it losses its sessions after 30 minutes.
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Jan 28, 2012
This is my page code
Code:
Protected Sub btnLogin_Click(sender As Object, e As EventArgs) Handles btnLogin.Click
Dim blnLogin As Boolean
blnLogin = Login(txtUserLogin.Text, txtPassword.Text)
If blnLogin = True Then
[Code] .....
So after the user presses the Login button there should be 3 variables stored in a session, this works (checked using trace='true')
Session State
Session KeyTypeValue
LoggedInSystem.String
LoggedInUserSystem.StringUser
LoggedInIDSystem.Int322
That's fine. Now I click on the AddToWall button to check if I can get the LoggedInID, it shows an empty messagebox.
In the trace there are no Sessions keys left.How can I make it keep the keys after postback/after clicking on buttons?
Note: When calling GetFriends(Session("LoggedInUser")) in the same sub as the Login button the variable does get passed to the class with sub GetFriends()
Here's my web.config
Code:
<?xml version="1.0"?>
<configuration>
<system.web>
<compilation debug="true" targetFramework="4.0" />
<sessionState timeout="30" />
</system.web>
</configuration>
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Oct 1, 2010
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when viewing using an http filter attached to the explorer you can see that:
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[Code].....
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Dec 29, 2010
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$(document).ready(function() {
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Jan 17, 2011
I dynamically add the webcontrol in onInit or onload (page_load). it will cause the second post back and with the ispostback==false;
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second time: ispostback = false.
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DataTable _temp;
if(! ispostback)
[Code]....
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May 28, 2010
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What is the best sequence order for Page.IsPostBack and User.Identity.IsAuthenticated? From what I have search for, this comes up most common:
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Jun 4, 2010
I have our site setup with 2 master pages.. one is for the general public and the other is for our admin section..
We are going to be updating the general pages to check the users job title to help customize the pages for them. Is it possible to add the code we are going to use to set the sessions to the master page of the general section and have it set the sessions. Or will i have to update each page individually with the logic and handle each page seperatly?
I have another post asking for help on setting the sessions, but once that is done, i'd like to know if adding that code to the master page will accomplish what i want, by just having it in one place and easier to maintain. Or will i have to add the code to each page i want to check the session values...
http://forums.asp.net/t/1558938.aspx ( this is where im asking for help with the sessions )
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Mar 22, 2010
I have just added the following to the very last page of my application.
[Code]....
And then i have this on each of the pages before the last, within my Page_load:
[Code]....
I have different sessions thruout the application process, but this one session is only set at the beginning of the process and once i kill it on the last page, any attempt to hit Back or trying to access any page directly without first starting, i need to force them to the beginning, what am i missing or doing wrong?
sessID is set on page 1 and is available until you get to the last page. Where i added the Session.Abandon(); Now if i get to the last page and hit back before the refresh occurs, im able to go back, but the page comes up with null reference for other sessions that are obvisously cleared / killed with the abandon. So i should have to check for each session should i? I mean if the abandon killed them all, then checking for the main session should be enough right?
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Mar 3, 2011
My website use master page as template. All my other pages spread in different level folder. Master page will get images (which use related path - related to master page) from style sheet file which located in App_themds's sub folder. When application run,The page will lost all images if the content page did not located in the same level as Master page.
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Sep 10, 2010
Building asp.C# shopping app that is using a hosted payment page to process payments (using posting of data to a hosted payment page). SSL certificate is signed and installed.
Flow:
Prelim) (HTTPS) Users authenticate using asp Login control
1) Users add items to cart.
2) (HTTPS)Users go to checkout page.
3) Users finalize their order, then click pay now after agreeing to T&C.
4) Server gets cart data (from MSSQL2005) and sets a transaction cookie (expiry set to 20 mins).
5) (HTTPS) Server Response.Redirects to an html page (in the same folder as the login protected pages).
6) Html page reads transaction cookie data and generates form fields.
7) (HTTPS) Html page posts data to hosted payment page (php).
8) User enters payment info and clicks pay now.
9) (HTTPS) hosted payment page posts info back to a .aspx page that checks if payment OK.
10a) If payment !OK, redirects to a declined page.
10b) (HTTPS) If payment OK, sets a verification cookie (expiry set to 20 mins). Then redirects to another html page.
11) Html page reads cookie data and generates form fields.
12) (HTTPS) Html page posts data to hosted verification page (php).
13) Verification page verifies (of course), if transaction ok.
14) (HTTPS) verification page posts data to a .aspx page that checks if verification OK.
15) If verification OK, process orders and do receipt stuff.
Issue:
This control flow was tested on an unsigned dev environment. SSL was being enforced, if needed on the unsigned SSL certificate. So we'd get prompts that certificate may be bad, but the control flow worked seamlessly.
However, now live with a signed SSL certificate, going from step 5 to 6, we are encountering a situation where some users (not duplicated every time, but verified that it does occur) when they click pay now and are redirected to the html page, they are forced back to the ~/login.aspx page (as if they were logged out).
Things to note:
a) The session did not time out.
b) The browsers have cookies and javascript enabled.
c) I can process the entire flow seamlessly on the same machine with other accounts, and occasionally, the same account.
So, basically, I'm stumped... Is this a viewstate error? A login control bug that won't let me redirect to an html page because it is now using a real SSL? Anyone have any experience with this kind of deal? I'm at a loss for solutions at this point.
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