Security :: From Session To GUID And Back

Mar 10, 2011

I would like to insert a GUID into my table, then pass that variable to another page where I will use it in an email validation. Is this how you create a GUID?

[Code]....

Is this how I would insert it into my table?

[Code]....

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Jul 19, 2010

I´m trying to use session to store a value (id). The problem is that I have to store it as a string. When trying to use the instance of the id I get the error:

Exception Details: System.InvalidCastException: Specified cast is not valid.

Source Error:

Line 156:
Line 157: Nemanet_Navigation newFile = new Nemanet_Navigation();
Line 158: newFile.Nav_pID = (Guid)Session["id"];
Line 159:
Line 160:

This is where I get the id and that seems to work fine. Session["id"] gets the value.

[code].....

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Security :: IE8 Session, Logging Out From One Tab Causes Both Tabs To Logout, But Can't Log Back In?

Nov 10, 2010

I have a website built in ASP.net 3.5, using WinForms and AjaxToolKit. I have encountered a lost/corrupt session issue while using Internet Explorer 8.

Scenerio:

1 IE8 Browser Open, 1 Tab
--------------------------------------

1. Login, Redirect to Landing, Logout - WORKS AS EXPECTED
2. Login, redirect to Landing, Close Window, Open Window, Logged-in already - WORKS AS EXPECTED (remember me enabled by default in code)

1 IE8 Browser, 2 Tabs
--------------------------------------
1. Login, Redirect to Landing, Open new tab, paste Landing page URL, Landing renders. - WORKS AS EXPECTED
- Logout from Tab 2, Tab 1 logs out after AJAX update. - WORKS AS EXPECTED
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[code]...

2. Close Window,Login,Redirect to Landing - WORKS AS EXPECTED

2 IE8 Browser, 1 Tab
--------------------------------------
1. Open 2 IE windows
2. In Window 1, Login, Redirect to Landing, then Redirects back to Login. - ISSUE
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[code]...

This issue seems to only happen when I have multiple tabs open,or multiple rwssers open.Firefox and Chrome does not reproduce this issue and works as expected.How do I make sure the Cookie/Session is being handle correctly in IE8?

Here is my Login Auth:

[Code]...

Web.Config

[Code]...

Server 2008r2
Seesion State:
Cooke Settings: Mode: Use Cookies;

Broswer IE8
Default settings

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i am currently storing my shopping cart in a datatable assigned to the session. but i wanted to know is it a good idea to store the GUID for the session shopping cart?

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Jan 25, 2011

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[Code]....

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Feb 11, 2010

We have a system where an administrator can login and create other users. If the administrator creates another user, then logs out and immediately logs back in with the new user information the UserID Guid is not available. If you log out and login again with the new username it works, or if you simply refresh the page it works.

Why does it not work on the first run?

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I am in the process of building a survey using asp.net and store these results into a database. Now this is what I am trying to achieve: - The survey is fairly long but will be split up in sections. - the way I have been told to develop this is to save each section into the database when the user clicks on a next button for example rather than clicking a final submit button and then submitting the results all in one go to the database. The reason being is for example, the user's browser crashes etc or if they accidentally close it down. I need to build it such a way that survey can remember who the person is.

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Security :: Sign Out Link / Click The Back Button On Browser, Still Go Back Into The Site?

Jun 24, 2010

I've created a Sign Out link on my page, just like the one you see on the top right hand corner of this forum.

This is the code i use :

<asp:HyperLink NavigateUrl="~/Login.aspx" ID="hypSignOut" runat="server" Text="Sign Out"></asp:HyperLink>

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Security :: Trying To Get The GUID After The User Has Logged In/Object Reference Not Set To An Instance Of An Object

Oct 20, 2010

What is wrong with this code? The error is Object reference not set to an instance of an object.

I have the below code in my class, then on the login page i need the GUID so i can perform a lookup in one of our custom tables. But then the error above pops up before the page even loads at the line Guid guid = (Guid)userInfo.ProviderUserKey;

[Code]....

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Security :: Valid Session Isn't Created On Re-logging In After Session Timeout

Feb 3, 2011

I created a user control for my web application that checks for Session Timeout. If the criteria are met for Timeout, I use Response.Redirect to send the user back to the login page. I include this user control in my Master page, and run the SessionTimeoutcode in the user control's Page_Init event. That all works great. However, once the user logs in again after time-out (and I have verified that the OnLoggedIn event does fire) the user is redirected to the DestinationPageUrl. That page runs the Session Timeout check when it loads (as it should) and the Session Timeout code "says" that the session is still timed-out.

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First of all, here comes the load part.

Structure MainStruct
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End Structure [code]....

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I mean something like...Build = Session("MyData")

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How to distroySession in asp.net(vb). When I Distroy the session if i click to the back button it will not redirected to previous page.I used

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Web Forms :: How To Redirect Back To That Page Where Session Was Expired

May 7, 2015

URL... it will show me this page but if i click on reply it will through me back to login page , ok i assume that would be a session variable checking for validation , but after login , it must take a user to default aspforums.net website , but it won't , it takes a user back to the page where he clicked the button and was thrown away ... i want to achieve this thing , how is it done ? bcx in my application my login url is Login.aspx , and my default url after which everytime users get into after successful login is dailyLog.aspx , now if he after login goes to abc.aspx page and session expires there , he gets back to login page , but after Re-Login , he again gets back toURL... because at LoginBtn Click event i have redirected him to DailyLog ,  but that's what i don't want , i want my default page to be DailyLog , but if session expires user would be send back to abc.aspx page ... 

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Web Forms :: Redirecting To Another Server And Coming Back / Should Session Variable Be Available

Mar 23, 2011

I had a .net 4.0 vb.net page that was setting session variable and setting a hidden form value to the same value. It was a paypal buy now button. When the user selects it, they are sent to paypal for payment. If the transaction is good, they are redirected back to another page on my site and a hidden value is sent back with the invoice I originally sent them. They are sending the form value, but my session variable does not available.

From the user point of view it's all seamless.. Is it the same session? And should my session variable be available?

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Security :: End Specific Session Outside The Current Session?

May 20, 2010

I would like to check if someone tries to access the application with the same username from a different browser/pc/etc. All usernames and passwords are stored in a MSSQL db.

What I am doing at the moment is: In the global.asax-file in Application_start(..) I initialize [Code]....

Now with every user that logs in I can check whether he is allready in ( in that case, he won't be able to log in, he'll be redirected to the login page ). Let's say it's the same user who wants to login but for some reason he wants to start the application from a different pc, maybe in a different building. Unless he hasn't forget to logout, he won't be able to login on this different computer. So he would has to go back and logout or wait for the timeout.

Now wouldn't it be more convenient to abandon the first session and let the same user login to the pc where he is right now?

The question is, is it possible to end the first session without beeing in it? Or is there any other solution for that problem? Since I have the SessionID stored in Application["UserList"] is there any possibility to end that specific session?

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I have a dropdown list with sessions: Summer, fall, spring, summer Interim.

And also have a gridview to display hours of those sessions. When chose session from dropdown it displays the data related to gridview.

Gridview has the 'Edit' option to edit hours for each sessions:

[Code]....

When I edit let say spring and update the field it redirects me to main page but everytime it selects the data from summer).

What I want is? If choose Fall from dropdown and make edit(in editpage.aspx?id=..) and update the data, then it should redirect to main page but choose the Fall from the dropdown (Not summer)

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I'm hoping this is a simple configuration setting that I have incorrectly defined. I have an application that has a secure (members) area. If a customer tries to browse directly to the secured page (http://www.mysite/members/memberpage.aspx) asp.net loads up my login.aspx page. When the user successfully authenticates from the login.aspx page in they are taken to the secured page they originally requested (so far so good!).The problem I have is that I run some SQL using the User.Identity.Name on the secured page as a reference to who the logged in user is. This way I can show some customer specific information. When I take the login route outlined above, the SQL doesn't seem to run (or the Session Variables aren't loaded yet?)... my page loads up with no customer information in it. If I browse to another page and then back the customer information shows up and all is well.

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