Session Object Not Returning On Page Redirect
Jun 11, 2012So In Default.master.cs PageLoad I have the following[code]...
However this is causing the following exception!object reference not set to an instance of an object.
So In Default.master.cs PageLoad I have the following[code]...
However this is causing the following exception!object reference not set to an instance of an object.
If my sessions time out I want to re-direct the page to another URL: Say the home page. On my page I make use of a GridView that uses Session variables. If the session variable time expire(currently at 60min) and the user click on a row in the GridView I want to re-direct him/her to the home page of my site.
View 3 RepliesI am storing an array of a custom serializable class in session on my site. When a page on the site changes, suddenly it renders them invalid, and tells me that it can't cast the type to it's own type. I assume the class version numbers are changing or something?!
I'm not trying to redesign this whole process.
Unable to cast object of type 'ShipmentPackages[]' to type 'ShipmentPackages[]'.
Description: An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.InvalidCastException: Unable to cast object of type 'ShipmentPackages[]' to type 'ShipmentPackages[]'.
[Code].....
I created a function that allows me to login to my web service. I created a session here and added some values I retrieved from a stored procedure.[code].....
My question is: I have a default.aspx and a master page, how can I redirect the user when their session is active? For example, the default page tells users that access is forbidden untill the login/register.Do I have to use the form load handler for default.aspx or the masterpages' load handler? How do I check weither the usersession is active?
i am new to this. i have 4 pages. login.aspx, account.aspx, settings.aspx and fliers.aspx.
its all programmed in vb.net with sql server backend.on my firstr page, login.aspx i have this code in the .vb page -
Dim SQL As String = "SELECT * FROM table1 WHERE email='" + Me.txtUserName.Text + "' AND password='" + Me.txtPassword.Text + "' "
ExecuteNonQuery(SQL)
[code]...
In my global.asax.vb I have a rule like so:
RouteTable.Routes.MapPageRoute("defaultRoute", "{*value}", "~/default.aspx")
So, if someone enters:[URL]...Even though that page doesn't exist, the application pulls up default.aspx
Now, if this wasn't using a wildcard it would be easy to pull this value in on default.aspx like so:
Dim prospect as String = Page.RouteData.Values("value")
But this doesn't seem to work with wildcards, e.g.:Dim prospect as String = Page.RouteData.Values("*value")
How can I get the page to pick up these variable values? e.g. one time might be janedoe, another johndoe, another goose, another 12345, etc. Whatever it is, I want it to be returned into the string prospect.
In the Session_Start of the Global.asax i have
Sub Session_Start(ByVal sender As Object, ByVal e As EventArgs)
Session("login") = False
[code]....
Why i am getting error the error Object reference not set to an instance of an object. at line
If Current.Session("login") Is Nothing Then
while checking for the login state as follows?
If GetLogin = False Then
'Do something
End if
I mean i have already created the instance on the Session_Start... Haven't i?
i'm creating a simple wpf browser application in vb.net.. my current problem is i don't know how to redirect a page using a hyperlink, being a newbie in the language.[code]
View 2 RepliesWhen a request is 404 in ASP.NET on IIS 7 i want a custom error page to be displayed. The URL in the address bar should not change, so no redirect. How can i do this?
View 3 Repliesresponce.redirect() is not working in vb.net to go on next page?
View 6 RepliesI wrote a page Page method in my aspx page. in web service method I need to call FindControl method return textbox and get text box value. But my findControl will take MasterPage object to iterate.
see my code
<script type = "text/javascript">
function ShowCurrentDateTime() {
$.ajax({
[Code]....
How to pass Master Page object or Page to Page method?. So I can use in Sared method.
Is there any way I can access Textbox value directly in Page method? I need access couple of controls in Page Method.
So I read up on this method called PRG as a way of addressing the form double-submit issue. However, I have yet to find a descent implementation of the Summary Page / Success Message displayed to the user. The only way I can think of is storing a session variable, but I don't want it to persist on multiple refreshes. It should show the message/summary once, and be done. Furthermore, it would be ideal if the user could not return to the previously submitted page.
[Code]...
The question is, how to display this message on the redirect which directly results from the submit, and preferably not for any further refreshes? Or just simply display the message regardless of refreshes,whatever is easiest and makes the most sense.
I have an default.aspx page that I'm trying to have redirect the user to a different page depending on whether or not their deviceId is stored in the SQL Server database. It should direct the user to the login.aspx if the record for the user is found or to the newdevice.aspx page if there was no record found. I want this to occur on Page_Load but have not been able to figure it out so far.
View 3 RepliesI am trying to read the HTML of a page that contains a non-delayed redirect. The following snippet (C#) will give me the destination/redirected page, not the initial one I need to see:
[Code]...
I am redirect user to loging page when session expires. Login.aspx is in root. I declared path like this in web.config file.
[Code]...
It is working for all root .aspx pages. But it not working for sub folders pages like Reporting eport.aspx. So how to manage redirect page (Login.aspx) for root .aspx pages and sub folder .aspx pages?
I've noticed that when I Response.Redirect to an .aspx page, it sometimes displays a cached page instead of actually executing the page and pulling fresh data from the database. I'm not using output caching or anything special in .Net here -- this is a CRM, and the caching is either happening on the client or, perhaps more likely, automatically in IIS. There is never a querystring involved, by the way. I'm passing a key via session. I know that if I used the querystring it would probably partially bypass the cache problem, but it's not an option in this case.
I did a little digging, and some people get around this by using Server.Transfer (which actually behaves differently than Response.Redirect and some of the details are not always desirable), and some other people said to set Response.Cache.SetCacheability(HttpCacheability.NoCache) on the page where I want to avoid caching. I thought .aspx pages were always flagged to avoid caching. Right?
I have the folowing code in the login page
If objDR.Read = True Then
Dim ticket As New FormsAuthenticationTicket(1,
objDR("UserID").ToString,
[Code]..
When i login as a student, it cannpt response to redirect the page i want to ,
and login as a lecturer also has the same case, cannot redirect the page i want.
How to I redirect to another page *after* printing document? Things seemed to be working fine until this morning we discussed that users were submitting duplicate entries.The reason for this is that once the user clicks to Submit their request,they are presented with a button that says, ">>>Click Here To Print Form<<<<".
Users are required to print this form but for some reason, they forget to do so.In the event that they forget to print this form, they are taking back to the input screen with boxes still retaining the data they initially entered.Is there a way to redirec them to results.aspx page, whether they print the form or not?
<script type ="text/javascript">
function doPrint() {
var printContent = document.getElementById("pdmyop");[code].....
On buttonSave click after saving the record successfully ,I want to show "Save successfully " message on a label on a page for few seconds and then reload the page.
View 2 RepliesI have a gridview with button in one column.I want to redirect to another page along with parameters on clicking on button.Is there any option to do this in rowdatabound event in gridview.
View 2 RepliesI want redirect to error page when exception occured. If the code is not handling try{}catch(Exception ex){}in the page and if error occured in web application. Then I want redirect Error.aspx with Exception details to diplay. I am already wrote code in Global.asax page like this.
[Code]...
I have my own login page.If any user access any page directly(without login),i want to redirect unauthorized user to login page. Using Generic Handler is there any chance?
View 2 RepliesI am using the ASP 2.0 Web admin tool to authenticate users using forms. I can deny a user other than admin from viewing my maintenance folder using the code below. However, if a user is denied access it throws you back to the login page. Is it possible to show an 'access denied' message or at least simply do nothing?
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<system.web>
<authorization>
[Code]...
Object reference not set to an instance of an object.[code]Now I currently have no session set on this page. So the session is NULL but i am just wondering why my if statement is taking care of this problem, why does it even try to get to the next part i.e. Response.Write ?
View 3 Replieshow to redirect to another .aspx page on clicking on a rectangle on a .aspx page? mention the whole program including headers, preferably in vb
View 1 RepliesI have a Web application (Help Desk Ticket System) with an inbox to monitor incoming requests and made some filter buttons that help the user arrange the requests based on requester name, creation date, etc.
Every filter will simply call the same page but will add some code to the query string. Example, if the user presses a button labeled [Sort by Date] here is the code behind for that button:
[Code]...
But I know that Response.Redirect does not accept javascript, and I don't want to split the code between Code Behind file, and ASPX file (adding OnClientClick attribute) because I will need to perform both VB instructions and also redirecting the user.
I have an ASP.NET Form (aspx). It uses VB as the codebehind. I want ALL of the VB to run and then the page to render BEFORE redirecting to the specified form. The problem is, is that I have Response.Redirect calls in the middle of the VB code (aspx.vb) and it seems to redirect before rendering the page. Is there any way around this? I need to have the page render so that some JavaScript on the client side (aspx) can run (it is for Google Analytics).
View 2 RepliesI am using ASP.NET. It is possible to create a session variable on page load just for a particular page/url? The problem that I have is: The user comes to page 1 and the session variable becomes A, then he opens page 2 in a new tab and the session variable because B on both page 1 and page 2. So when the user needs the session variable on page 1 it does not work because the variable have changed!
View 2 RepliesI have some value related to Particular Name, for e.g.:
FirstName : Ghanshyam;
LastName : Thakkar;
Age : 25;
Designation : Student;
I want to pass this value to another Page using Session. How can I pass both Name and Value both in one variable using Session?
I have button in one of the columns in a gridview. On clicking on a button I need to redirect to another page along with parameters to another page.
View 1 Replies