I need to create a user login/logout/Session expiry tracking page(ASP.Net).. It is obvious that I can invoke my tracking page when user logs in and logs out.. How do I detect session expirey?
View 3 RepliesI'm using ASP.NET Session State to keep track of logged in users on my site. However, one problem I'm running into is that by default ASP.NET session cookies are set to expire when the browser closes. I've tried setting my own ASP.NET_SessionId cookie and modifying the cookie's expiry using something similar to the following code:
Response.Cookies["ASP.NET_SessionId"].Expires = DateTime.Now.AddMonths(1);
None of these approaches work, they all set a second cookie with the same name. Is there a way of changing the session cookie's expiry?
is there any way to find out the reason for session expiry?
View 7 RepliesI am creating a content management system but there is one problem. What I want to do in my website is that when a user opens the website a new sessionid is created for that user, and when the user closes the website, the sessionid is cleared. How can I can do it?
View 3 RepliesThe a way to save an object in session with expiry time , such as when you're saving object in cache.
View 12 RepliesI want to be able to log when a user ends their session on our application and record whether it was a sign out or a the session expired. I am using
cookies.Add(new HttpCookie("ASP.NET_SessionId", ""));
to set a new sessionId on sign out, but when the session expires, the sessionId is reused if the browser instance is not closed. In my web.config I have used
<sessionState mode="InProc" timeout="1" cookieName="session" regenerateExpiredSessionId="true" />
but still get sessions reused. I can't kill the cookie in Session_end() because I don't have access because there is no HttpContext or request, so I can't reset it that way. how I can force a new sessionId from the Global.asax.cs file?
I use FileUpload to select a file and then I click an Upload Button to read the browsed filename. When I select a file that is larger than the max set in web config, my app crashes. The click Upload Button and the FileUpload control are in an ItemTemplate in a Gridview. If I select a file that is less than the max allowed, everything works fine.
How/where do trap this kind of error? I have tried breakpoints in my code behind, but it seems like the page crashes before any of the events I have tried to trap. I have tried a customvalidator to no avail.
I have a piece of code which loads either french or english text and 2 link buttons that allow to switch between.
[code]....
What would be an efficient way of displaying the link buttons and text if both English and French exist and the session exists in either EN or FR.
I've thought of using panels to hide the buttons or text, but the main problem is having the page refresh to set the Session variable. Response.redirect(URL) to refresh the page i suppose and i can't find a better way to display the text other than to Response.write it since then i'd need a ton of labels.
i have a dummy javascript that can trap for enter key on the client side
Code:
[code]....
now look at the Elseif part, if the textbox is greater than and the user has pressed the return key(Enter) then it should execute the do whatever condition. i could do this on the client side , but my app requirement has changed so some of the code is on the server side.
I have implemented some javascript to handle the keypress of the "Enter" key to click a certain button. This has worked well on several pages but I have one that does not behave:View:
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May return controller:
[Code]....
When I actually click a button, the value assigned to strButtonClicked is correct.Example: Click "Login" --> strButtonClicked = "Login"When I hit the "Enter" key, I get a different value.Example: Hit enter --> strButtonClicked = "I forgot my User Name and/or Password"Below is a View that works correctly:
[Code]....
I am hosting a solution with an outside company so getting them to troubleshoot or send me log files is not working.
Is there a way from code or Global.asax file that I can trap Memory usage from my web application when it reaches a certain amount? Then figure out what is using all the memory
How do I implement this session: (UserID is part of the login table)
Session["UserID"]="usrName";
Into this code?
using System;
using System.Data;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.Odbc;
using System.Data.SqlClient;
public partial class Default2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
Login1.Authenticate += Login1_Authenticate;
}
protected void Login1_Authenticate(object sender, AuthenticateEventArgs e)
{
//database connection string
OdbcConnection cn = new OdbcConnection("Driver={MySQL ODBC 3.51 Driver}; Server=localhost; Database=gymwebsite; User=x; Password=x; OPTION=3;");
cn.Open();
OdbcCommand cmd = new OdbcCommand("Select * from User where username=? and password=?", cn);
//Select the username and password from mysql database in login table
cmd.Parameters.Add("@username", OdbcType.VarChar);
cmd.Parameters["@username"].Value = this.Login1.UserName;
cmd.Parameters.Add("@password", OdbcType.VarChar);
cmd.Parameters["@password"].Value = this.Login1.Password;
//use asp login control to check username and password
cmd.Parameters.Add(new OdbcCommand("@UserID", 'id.int'));
OdbcDataReader dr = default(OdbcDataReader);
// Initialise a reader to read the rows from the login table.
// If row exists, the login is successful
dr = cmd.ExecuteReader();
int id = cmd.Parameters["@UserID"].Value;
Session["UserID"]="usrName";
if (dr.Read())
{
e.Authenticated = true;
Response.Redirect("UserProfileWall.aspx");
// Event Authenticate is true forward to user profile
}
}
}
I need to be able to retrieve the correct UserID when some one inputs there username and password upon login and then some how retrieve it on a new page something like this to retireve it but unsure?
string usrName = Convert.ToString(Session["UserID"]);
I just dont know how to add the first part, the session into my login code so I can some how store the UserID in my session but also retrieve the correct UserID from the submitted data that takes from my mysql login table.
I want to display session timeout timer in my site, for e.g. if user doesn't perform any task's for last 3 minutes or so timer start displaying time left and when user start doing any activity i.e. mouseover etc it should disappear.
View 1 RepliesI have a details view to insert some data. I want to validate this data myself. use the ItemCommand to trap the insert command. If the data entered does not match what I need, I want to somehow stop the insert procedure at this point.
View 3 Replies I always used ASP FileUpload with great success, but recently tried to modify its appearance in order to blend in with the general appearance of the project. After extensive research I discovered that in this particular case it would not be possible and opted for an alternative.While not wanting to lose the functionality of the ASP FileUpload I hid the ASP FileUpload and rather just added a read-only textbox and button which I styled with ease. Subsequently I invoked the ASP FileUploads file browse window using Javascript. Consider the following:
Code:
<script type="text/javascript">
function ShowBrowseDialog()
{
[code]...
The above works fine for invoking the ASP FileUpload and selecting the file, but I need to work with the selected file(s) in the code-behind. Is there a way that I can trap a click event on the ASP FileUpload OPEN button, i.e. once the user selected the file(s)?
I'm working on an ASP.NET MVC web application that will be deployed across multiple load-balanced servers. With this setup, a user might have one request served by server A and the next request will be served by ServerB or ServerC. We don't want to store Session Data in the database, as we're trying to minimise database hits where ever possible. As such, we need to have the HttpSession managed and stored on another server. My understanding is that this is possible by using a Windows Service that will manage this for me, but I'm unfamiliar with how to implement this. Can somebody point me at some good documentation on how to do this? Or any pitfalls or other points to take into consideration?
View 3 RepliesI am creating an ASP.NET application that allows users to edit and insert data that is persisted in a SQL Server database.I would like to implement a controller class that handles queries for certain entities, caches results and triggers events when data is inserted or updated.I need one of these controller classes for each entity in my data model.What I'm unsure of is how to create a singleton class of this sort that different user sessions can access.
For example,I have a Employee entity in my data model.I would like to have an EmployeeController class that handles retrieving the employees from the database, sends inserts and updates to the database,keeps a cache of all employees and triggers events when an employee is inserted or updated.Objects in other user sessions could then listen and respond to these events.
Am I on the right track?Should I be using the ASP.NET MVC framework to accomplish this?How do I instantiate these controller classes when the first user needs them and have subsequent concurrent users access the same class?
EDIT:I've been researching the idea of a controller class as an anti-pattern since @TomTom's answer.I'm not convinced one way or the other.I still need an answer to question #3 above.Let's just drop the specific idea of a controller class for now. How do I create any class that is:accessible by multiple user sessions,allows only one instance,is deleted if there are no user sessions,and triggers events that other classes can listen to.
is it possible to add an expiry date to a PDF with asp.net when someone downloads a file?
when the user downloads a file it will be usable until a set date when it will become useless and they will have to download a fresh version.
I need to display alert message or alarm or any sound or indication when there is an expiry date for the products from the database table. It should be automatic by any windows or webservice...
I am using .net 2003 and ready to upgrade...
I want to maintain user session in my project...the problem i am facing is when any user login is nt maintained.
View 1 RepliesWe need to validate the credit card expiry date using C#?
How to convert String("MM/DDDD" : "07/2011") to Datetime and compare with current date?
Using ASP.NET 2.0, with forms authentication.
Just for a test, I configured the roles cookie in web.config like this :
<roleManager enabled="true" cacheRolesInCookie="true" cookieName=".ASPXROLES" cookieTimeout="2"></roleManager>
I wanted to see what would happen when the cached role cookie expired. Using Fiddler, after 2 minutes had elapsed, I could see that the raw value of the role cookie had changed.
I was expecting that on expiry, that ASP.NET would simply re-read the roles information from the database, and repopulate the cookie with the same value. So my question is, why would the raw value of the cookie change after expiry ? The cookie value is not human-readable (base 64 encoded and/or encrypted ?), so I can't tell if the information in it is the same, although the application still seems to work fine.
EDIT :
It looks like each time the roles are encrypted and cached in the cookie, it gets a different raw value.
e.g. if you run the following code :
RolePrincipal rp = (RolePrincipal) User;
string str = rp.ToEncryptedTicket();
Label1.Text = str;
I have added a list to the cache with an expiry date, however the expiry date doesnt work, im not sure how long the cached item lasts but its no more than a day.
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I have the a test harness detailed below. This has two labels on the page that are set within the page_load which is hit every second due to the updatepanel and timer.
Label1 is set to a datetime value that is stored in the Cache. Label2 is set to the current datetime.
The cache is set with an absolute expiry of 5 seconds from now and there is an update callback on the cache to re-set the datetime and make it valid for another 5 seconds.
The problem I have is that I'm seeing the cache update every 20 seconds, not every 5 seconds like I would expect. If I set the time to 30 seconds then it updates every 40.
This appears to indicate that the cache will only expire every 20 seconds. Does anyone know of a way of reducing this time? If I just insert into the cache with an expiry of 5 seconds and no Callback then it works as I would expect and is removed every 5 seconds.
ASPX:
[Code]....
I need to show a Warning message when a Product is about to Expire
or before the expiry date of product or atleast remind him before expiry.. like Reminders.
I am working on Web Development Project in Asp.Net , VB language ....