Response.Cache.SetExpires(DateTime.UtcNow.AddMinutes(-1));
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.Cache.SetNoStore();
I am using this code for clear cache on browser back button.It is working fine for mozilla firefox and Explorer.But it is not working for google chrome.
I have set sessiontimeout=10 after timeout. I want to show alert message and when I click with Ok button I want to redirect home page ....
View 1 RepliesI have a .Net 3.5 website which uses windows authentication and expires the session using a meta tag on the prerender of my base masterpage class.
protected override void OnPreRender(EventArgs e)
{
base.OnPreRender(e);
if (Response.ContentType == "text/html")
this.Page.Header.Controls.Add(new LiteralControl(
String.Format("<meta http-equiv='refresh' content='{0};url={1}'>",
SessionLengthMinutes * 60, SessionExpireDestinationUrl)));
}
This works well for pages that do full post backs. However there are a few pages in my application where the user does a lot of work that is inside of an update panel. My company's policy is a timeout of 15 minutes. Which means, after 15 minutes of working inside of an update panel page, the user gets redirected to the application splash page.
Is there a way to reset or extend the meta tag on an async postback? Or perhaps a better way to accomplish this entirely?
When the browser is closed (w/out clicking on log out) and user launches the site using a new session, it does not prompt user to login credential page, rather it takes the user back to the previous session.
View 1 RepliesI am working on Visual Studio.Net 2008 framework 3.5 with (vb).
I have created a session variable, when user logs in successfully. But after login if page kept ideal for sometime session get expired, and automatically redirects to login page.
So, I want that after login page should remain opened and session would never get expired until user clicks on Sign out link or button.
For this do i have to set anything in web.config file?
Here is a use case of my login using a CustomMembershipProvider
User Logs in MembershipProvider validates user account User property of Membership is set to user details coming from the database An authentication ticket is created Forms authentication cookie is added. User is logged in
Here is a use case of my problem Stop whe web development server Start the web development server, and user is still logged in (due to cookie?) User property Membership is set to null due to server restart/failure Application throws exception due to null user value
The only solution I could think off is to clear all cookies on Application_Start() but I don't know how is that even possible as Request is out of context during application start.
Here is the code:
[Code].....
I have this code:
protected void Button3_Click(object sender, EventArgs e)
{
DataView dv2 = (System.Data.DataView)Cache["SqlSource"];
if (dv2 == null)
{
SqlConnection con = new
[Code] ....
For some reason, the Cache is not expiring. What is wrong with this code? I am aware that I could do this using the SqlDataSource1.SqlCacheDependency property, but I'd like to know how to do it using the SqlCacheDependency object.
I have 2 issues, the fix to one issue gives me the other issue.
In simple terms I have an asp page that uses ajax to get its data. I do not want to cache this page as the data is out of date if you re-open it. The page has buttons to allow the user to do stuff, such as change the view, so when pressed the page that comes back is the result of a POST.
The page also has links to external websites, this is what happens:
User opens webpage
User clicks a button to change view POST
User clicks a link to external website
User presses Back button which then flags up the "Webpage expired" type messsage because the results are from a POST (I believe)
To get around this I was caching the page, this then leads to another problem, the cached page being out of date (in fact I use external web-parts which show as white blocks as they are NOT cached!).If I wait long enough, the ajax kicks in and the data comes back.
So, I can't cache it without getting a huge delay before being able to see anything, and I have to cache it to get around the POST/expired type issue.
I am planning to sell digital goods on my website (Asp.net). After successful payment the customer will be redirected to the download page of my website, which will display the link to download the digital content stored in my server.
I want to secure the location of the file, by creating a disposable link to the file. Every time a customer visits this page a new download link will be generated for the same file. Also this link should expire after it is downloaded for the first time.
Is it possible to do it in asp.net ( C# preferably )? if yes how can i do it?
So I'm attempting to limit user's access to my database through the web. I have a registration form that asks the user for a name and password, then verifies this against a DB. In order to prevent DB overload, I will limit the user's attempts to 10 in 10 minutes. This is how I am trying to solve this, but cannot verify that i'm using the right approach.
Code:
Dim timeout As Integer = ConfigurationManager.AppSettings("timeout")
Dim userIPkey As String = Me.Context.Request.ServerVariables("REMOTE_ADDR")
Dim i As Integer
If HttpContext.Current.Cache(userIPkey) = Nothing Then
i = 1
[Code] .....
For some reason I can hit the service with a for loop and get to the DB every time. If I try doing this through the browser while debugging the webpage, I get the right error message after 10 attempts, while on the server, or through a reference to localhost I will not get the error message.
I want the code for showing popup dialog box , to show the time remaining for session closing because of in-activity. and 2 buttons for allowing to stay or to signout.
i want all the settings that are need to achieve the functionality.
i have two web aplications running on different sites.
1. site gets user information and show another website (2. site) in an i frame. but when i do this 2. site session starts again on every page.postback . if i connect to 2. site without 1. site everything works well.
I have problem is that when i force to clear session so it remove all session on to server. i mean i open website at 2 systems and one system logout website so 2nd automatically logout.i dont know when is the problem. i m using Session.Abundent for current session.but it clear all.
View 2 RepliesI have a very interesting problem about Sessions and Master Pages. I designed a small CRM web application with master page. Users could enter their expenses with this application. I put a label on master page. If users login to this site, I changed this label text.
Label text is username. My problem is; when some users using this site at same time, usernames are conflict. For example; One client login and label which on the masterpage value is Ali. Another client login and label value is Ahmet. After that, If two clients process the same things on this site, Ahmet's label's value is changed to the value of Ali. I write it Session Id on URL. Firstly two clients take different Session ID when login to that page. When conflict occurs, two clients are the same Session Id that pages. I am using .NET Framework 3.5V. Is this ASP.NET bug ?
I want some efficient way that how can i display a message to user that he is about to logout after 1 minute if user is idle and doing nothing on the page for 1 mintue.
on message if user want stay online so he must click keep me online or say logout.
I am trying to retrieve SessionItemShory column for given sessionid.The data stored is serialized so we need to deserialize the data to use it.I am trying to do that but its not working.
[Serializable]
public class sessiondata {
public string username { get; set; }
public string country { get; set; }
public string city { get; set; }
[code]...
Its related to datatable in gridview store in session and then session retrive and store to database. basically i am using gridview here creating new row for button click and these row adding untill user's last entry then submit all these entry to database. so i want to use session variable to store this data temporarily and after final entry user click on submit button and all data shold be save in db.
View 9 RepliesHave not run the ASP.NET Development Server for a while. Today I copied a production website to my workstation and ran it with VS 2008. The following error message popped up. What is the problem with the ASP.NET development Server on my workstation? The website on the Production server still ran okay.Unable to make the session state request to the session state server. Please ensure that the ASP.NET State service is started and that the client and server ports are the same. If the server is on a remote machine, please ensure that it accepts remote requests by checking the value of KEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesaspnet_stateParametersAllowRemoteConnection.
If the server is on the local machine, and if the before mentioned registry value does not exist or is set to 0, then the state server connection string must use either 'localhost' or '127.0.0.1' as the server name.
I'm working on converting the TailspinSpyworks shopping cart Joe Stagner wrote in C# to VB using an evaluation version of VS 2010. I have the following public function:
Public Function GetShoppingCartId() As [String]
If Session(CartId) Is Nothing Then
Session(CartId) = If(System.Web.HttpContext.Current.Request.IsAuthenticated, User.Identity.Name, Guid.NewGuid().ToString())
End If
Return Session(CartId).ToString()
End Function
For Session in Session(CartId) I'm etting the following error: 'Session' is not declared. It may be inaccessible due to its protection level. For User in User.Identity.Name I'm getting the same error: 'User' is not declared. It may be inaccessible due to its protection level
Using this code i want to show an modal pop up to the user that "your session will be expired within 5 minutes , Click here [BUTTON] to reset your session" , here's my code :
<asp:Button ID="btnReset" Text="Reset" runat="server" OnClick="ResetSession" />
<br />
Your Session will expire in <span id = "seconds"></span> seconds.
<script type="text/javascript">
function SessionExpireAlert(timeout) {
var seconds = timeout / 1000;
seconds--;
[CODE]...
i have two text boxes and one button in web form. I need to display the contents of text boxes in a datatable in the same form, when i click on the button.
How can i do this using session array. I need to store values in session array. and get back the values from session when i need .
I added the following code to global.asax to load up several session variable when a session starts. I'm assuming that when a page goes to use the variable that I should be
1) checking at the page level that the value is valid not 0 when its not expected to be 0, not a zero-length string when its expected to have a length
2) have code at the page level that sets the values if the values have not been set as when the Session timeout, ideally putting the code in a class derived from Page and then deriving all of my pages from the new class so that the code does not have to be repeated in every page
[Code]....
I have a problem by getting session which created for new site visit or session expired.
View 3 RepliesI have a class called EditMapUtilities. Here are some class properties that I want to persist:
public class EditMapUtlities
{
public static Boolean isInitialEditMapPageLoad
{
get { return SessionHandler.isInitialEditMapPageLoad; }
set { SessionHandler.isInitialEditMapPageLoad = value; }
}
// REST OF CLASS NOT GERMAIN TO DISCUSSION AND OMITTED
}
Here is my SessionHandler Class following the pattern from this post Static Session Class and Multiple Users:
using System.Web.SessionState;
public static class SessionHandler
{
private static HttpSessionState currentSession
{
get
{
if (HttpContext.Current.Session == null)
throw new Exception("Session is not available in the current context.");
else
return HttpContext.Current.Session;
}
}
//A boolean type session variable
private static string _isInitialEditMapPageLoad = "EditMapInitialPageLoad";
public static bool isInitialEditMapPageLoad
{
get
{
if (currentSession[_isInitialEditMapPageLoad] == null)
return true;
else
return (Boolean)currentSession[_isInitialEditMapPageLoad];
}
set
{
currentSession[_isInitialEditMapPageLoad] = value;
}
}
}
I am still learning OOAD. I want to keep relevant properties with relevant classes. I also want to keep all Session stored variables in one place for ease of maintenance and to encapsulate the session keys and calls. I feel like my design is too coupled though. How can I make it more loosely coupled? Is my editMapUtilities class too tightly coupled to the SessionHandler class? How would you do it better?
Let suppose, I am building an asp.net website which has login scenario in it. I want to provide a certain functionality to the website that if the user is already login on computer 1 and now try to login on computer 2, so he will be allowed to remain login on computer 2, while automatically logout him from computer 1. I also know that http is a stateless medium, so whenever user interact with computer 1 and try to interact with the page, it will get noticed at that time.
View 2 Replies