How To Prevent SESSION From Being Overwritten On PageLoad Of My MasterPage
Mar 12, 2010
I'm new to asp world, and I have to keep my new job :)Switching form php to asp.net 3.5 (never used before). What would be the best practice for storing a SESSION variable in my project ?How can I prevent my SESSION to be overwritten if my initialisation code is in the onPageLoad method of my MasterPage ?My variables keeps beeing overwritten, please someone help me and tell me if there is any other solution than dealing with this pageLoad problem.
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Mar 23, 2011
I have a web site coded with VB + MS Access database (VS2010). I'm using one MasterPage to manage both public and users area. I'm facing loss of session variables when a user is logged in. I can't figure out what is wrong and I need your help, tips and tricks.
When a user is authenticated (thru the Login.aspx), I create a SessionID, store his credential in session and load user's page by Response.Redirect(~/users.aspx). Here is what I did:Code:
Dim MyLink As String = Session.SessionID & "other variables"
Session("MyLink") = MyLink
FormsAuthentication.RedirectFromLoginPage(TextBoxEmail.Text, False)
Response.Redirect(~/users.aspx)
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In the code behind of the MasterPage, I try to check (everytime a link is clicked/page requested) whether the user session (SessionID, credential in session) is available. If so, the user is still logged and get access to all the menu. If no session is available, it means the user is logged out or not logged in yet and few menu are shown. Here is the code
Dim MyLink As String = Session("MyLink")
If MyLink Is Nothing Then
'Only show MenuPublic
[code]....
My default menu is:MenuPublic1, MenuPublic2, MenuPublic3
When a user is logged in, I add to the MenuPublic some reserved Users' menu like below.
MenuPublic1, MenuPublic2, MenuPublic3, Menu_Users1, Menu_Users2, Menu_Users3
In local, everything works perfectly fine. Now after hosting my website, from time to time the MasterPage loss the Session variables. When it happens, the page still shows that the user is logged in by displaying Logout and Welcome Username beside it.
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May 10, 2010
how can i check a session on my master page
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Nov 8, 2010
I am working on some refactoring work from cold fusion to .Net and I have a login page which redirects to a mainpage --> aaa.aspx. It displays the current news from the database and then I have some links coming from the masterpage which are embedded inthe same page as well. This masterpage has links to pages which are in both .Net and CF.When the aaa.aspx was initially in Coldfusion, it would redirect to all these links in the masterpage without any issues, but from the time I re-wrote the aaa.cfm to aaa.aspx, the links in the master page that are embedded in the aaa.aspx would not work,i.e they would redirect back to the Login page. My session looks like it is persisting to the aaa.aspx page, but not to the master page elements.At this point, I am not sure as to what is causing this issue.
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Jan 30, 2011
I have a web site using master page and login page. I use the MasterPage to check the availability of a session. I'm coding with VB + MS Access database.I believe something is wrong with my master page and I can't figure it out. In the code behind of the MasterPage, I try to check the user session is available. If so, the user is still logged and get access to all the menu. If no session is available, it means the user is logged out and few menu as shown. Here is the code
[Code]....
Please note that my Login.aspx page is also base on the same MasterPage. On the Login.aspx.vb, if the user credential are correct, I did this:
[Code]....
So my logic is this: when the web site is launched MasterPage + Default.aspx load. So Sesson("MyLink") is empty. If the user's credential are correct, I create the session so the it can be available for MasterPage.My default menu isMenuPublic1, MenuPublic2, MenuPublic3When a user logged in, I add to the MenuPublic some reserved menu like below.MenuPublic1, MenuPublic2, MenuPublic3, Menu_Users1, Menu_Users2, Menu_Users3I'm testing my application on two different web hosting server: aspspider.com and somee.com. In the local, everything works perfectly fine.My problem is that on aspspider.com if a user logged in and then click on any MenuPublic, the application does not let him show information from Menu_Users. It's wrongly sending him to the login.aspx but still show his profil on the masterpage and the "welcome username" with beside the Logout link. It seems like the user is still connected but cannot have access to users pages.On the other server (somee.com), even if the user logged in successfully, I still have "welcome guess" with beside the Login link. I also have the user's profil information with all the links. If a user click on any MenuPublic, he can still see all the Menu_Users. But if he clicks on any Menu_Users, the application redirect him to the login.aspx; but still displaying all the information as if he is logged.The package deployed on both server is the same; except the connection string.FYI, I have Global.asa in the package but I don't use it. The web.config has plenty of stuff that came when I first start the project. The only thing I added is the connection string.
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Jan 14, 2010
I managed to user to perform multiple log on from other IE window session in my web application if the same log on is currently being used.Unfortunately I have problem to control multiple log on if the user is logging in using tab browsing in the same session. I know this is due to the same session Id but is there any way to trace down to the tab level within the same session?
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Mar 4, 2010
Hacker's attack the session ID in asp.net application. How can we protect the session identifier from hackers.
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Mar 22, 2011
how to prevent the two session on a single browser ie: first i opening a site on mozilla then login after logged in . I am opening a new table with the same url login using different user after that suppose there is one link called view my profile on user home page if if click the link on first tab browser, it showing the user details on second tab browser user details ie: previous session.how to prevent or avoid this ?
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Jun 19, 2010
I'm researched how about prevent session timeout, I tested the solutions links bellow and it works great.
http://www.primaryobjects.com/CMS/Article86.aspx
http://www.codeproject.com/KB/session/Reconnect.aspx
But my Website has one thing that still causing problems... the Website calls an ActiveX. Some time in the user navigation the user clicks in a button and a JavaScript loads an ActiveX with the code bellow.
var objDownload = new ActiveXObject('XXXXXX');
objDownload.ActiveXMethod();
This ActiveX makes a huge processing and this is why I'm want the trick to avoid the session expires. I tested the both above solutions but when the ActiveX is running no refresh happens. Can anyone help with this problem? How the ActiveX can be running and the IE makes the refresh?
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Apr 11, 2012
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
Session.Abandon()Response.Redirect("Default.aspx")
on the click of logout_linkbutton.but when i click back button in browser its go back to previous page. But when i click on any control it will redirected to Default.aspx.
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Mar 5, 2013
I have a problem with all multiple tab browsers due to session object. I have a requirement that whenever user opens a new browser I need to show different values, so I thought of using Session as in IE 6 every browser creates a new session. But all other multiple tab browsers IE 8 and FF shares the session(If user has already open the browser and try to open different browser). How can I create new session whenever user opens a new browser window. My application is basically in ASP.NET and server side we have C#.
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Oct 21, 2010
I am creating some sessions on successful login and I need to access them from my master page. How do I go about this?
public void showUser()
{
if (!string.IsNullOrEmpty(Session["User"].ToString()))
{
Response.Write(Session["User"].ToString());
}
else
{
Response.Write("Not Logged In");
}
}
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Jan 12, 2011
i am new in asp.net form authentication and sessions
i would like to know how to save session in masterpage or in global.asax and how to clear session.
how to better handle session timeout by redirecting to a page.
this is my web.config session settings
<sessionState mode="InProc" cookieless="false" timeout="1"></sessionState>
code in my masterpage
[code].....
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Jul 15, 2010
Situation:In Web.Config we have CustomErrors turned on with redirectMode="ResponseRewrite".In Page_Load of our MasterPage we access the Session property of the Page.
Problem:When an Error occurs on any page the user gets redirected (via Rewrite) to our Error.aspx Page. There in the Page_Load of the MasterPage we access the Session and get an HttpException telling us to enable SessionState. But we have the SessionState enabled, definitly.
Question:How can we access the session after a UrlRewrite in the Page_Load Event of our MasterPage?
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Mar 25, 2010
I have ASP.net application that is basically a data entry screen for a physical inspection process. The users want to be able to have multiple browser windows open and enter data from multiple inspections concurrently. At first I was using cookie based sessions, and obviously this blew up.I switched to using cookie-less sessions, which stores the session in the URL and in testing this seemed to resolve the problem. Each browser window/tab had a different session ID, and data entered in one did not clobber data entered in the other.
However my users are more efficient at breaking things than I expected and it seems that they're still managing to get the same session between browsers sometimes. I think that they're copying/pasting the address from one tab to the other in order to open the application, but I haven't been able to verify this yet (they're at another location so I can't easily ask them).Other than telling them don't copy and paste, or convince them to only enter one at a time, how can I prevent this situation from occurring?
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Dec 16, 2010
In my application, session value automatically set into null.In certain workflow only it will set as null (Normally It's able to access value). Example, at the time of login, I will set session values. While, user deleting some entries from drop down list of specifc page,client script will show message like selected entry deleted. After that, flow point will move to master page. There I have to access session variables. It's getting null value. I tried to debug with Quick watch, at the pageload of master page only value set into null (automatically).
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Mar 31, 2011
We have a Master page (asp.net) with a menu item (html anchor) which should not be populated with a href for a certain user role - but it's always showing!
The Master.cs has:
<li><a id="manage" runat="server" href="~/Views/Manage.aspx" title="Manage details">Manage </a></li>
In the OnLoad event on the Master.cs we remove the HRef attribute if it's a certain user type - that seems to work OK, I've checked in the Watch window.
manage.Attributes.Remove(Constants.HREF_ATTRIBUTE);
The Watch windows confirms the HRef attribute being blanked out but as soon as the Master.cs is displayed the HRef is back again, as if the HRef in the aspx has overwritten the 'removal' in the code.
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