I'm using a compiled .dll provided by someone else -- I know little about it, other than it has a session variable that I must access in a way that is strange to me. Not sure what to call it -- have googled for words that I thought might be right, but so far no success.
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Partial Class Preferences_MyPreferences
Inherits System.Web.UI.Page
Dim userID As String = Session("UserID")
This is just a page in asp.net. I want to be able to grab the Session("UserID") but every time I try, I get this error:
Session state can only be used when enableSessionState is set to true, either in a configuration file or in the Page directive. Please also make sure that System.Web.SessionStateModule or a custom session state module is included in the \ section in the application configuration.
If I put that Dim userID inside say the Page_Load Event, then it works fine. Why does it have to be inside an event? I want to dim it once, and use it throughout the page.
I have an aspx page with a button, the user clicks the button a session variable gets set, I then read the session variable later. here is an exaple of my button:
<
td style="width: 100px" align="center">
<asp:Button ID="btnCiv" runat="server" Height="32px" Width="50px" Font-Bold="true"
[code].....
Everybody seems to come up empty after the initial setting of data.
I programmed my website using visual basic code (via microsoft expression web) and need to post information to a remote location using a php page. How do I take variables from my visual basic code and transfer them to my php code? I was thinking sessions would work, but I haven't figured it out yet.
View 7 RepliesMy vb.net application needs to use a session variable. I don't really know how to use it in ASP.net. I've been trying to use what my books have, but I can't get this label to work. I need the user input to be validated against the database and if their code is in the database, the textbox should disappear and a label will appear saying Welcome. The way I wrote it, I get an error saying the server tag is not well formed and in the codebehind it says that the ID of my label is not declared. Can anyone spot any problems with the code I wrote?
[Code]....
I 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 RepliesSub Authenticate()
Dim username As String
Dim password As String
[code].....
Here is the situation: User logs in via username/password stored in an MSSQL database If the user is authenticated, the system makes a session variable with username/SHA1'd password and boolean if the user is logged in or not (for subsequent pages) I need to be able to destroy the session variable. I want a confirmation box as well.
This is what I have so far:
<script type="text/javascript">
//<![CDATA[
function doLogout() {
[CODE]...
Since it is an ajax request won't reload the page (the functionality works fine, the request destroys the session), I think I need a different approach to do this. I would really like to be able to do it all in ASP.NET if possible.
Does session variable shared accross different browser? If not is there away that I can share information accross browser similar to the functionality of caching but the scope is wider.
View 3 RepliesI keep a Session variable when the user is logged in. So that when the user click on btnLogout it must clear all my sessions and Log the User out for GOOD!!!
It does clear my sessions but if i click the BACK button in IE right after i logged out then i am still logged in! Meaning it goes back to screen where the user was still logged into.
My code on log out
protected void btnLogout_Click
{
Session.Clear();
Session.Abandon();
[Code]....
Is there maybe an option in code i can do that will disable the user from pressing the BACK button in the Web Browzer?
Im trying to grasp session varibles, i understand what they are etc but i would like to know how to define a type for each session variable.Iv written it like this
Session("Title") = txtTitleContent.Text
How can i tell it what type of value is going to be in it, because at the moment im only playing about with strings, but what if i have an integer and want to pass it back to the back end to save it will throw an error saying "conversion from string to integer is not valid" should i use Cint to deal with this?
As the title states, I have a session variable that is set during a login script with asp.net and vb.net code-behind. Can I call a javascript function when a link is clicked that will destroy that session variable? If it is possible, can I use jQuery to make that process easier?
View 4 RepliesI am using VWD 2008 express edition to edit the code below. The HTML Insert Code is as follows: I have no code behind.
<Fields>
Line
24 <asp:TemplateField
HeaderText="RecordID"
SortExpression="RecordID">
[Code] .....
My objective is to populate the DetailsView with a single field in ASP.Net VB, when Inserted, a Record will be created with only a key field.
I have a master page with the following vb code in the code file...
Public Sub Page_Load(ByVal Sender As Object, ByVal E As EventArgs)
If Not IsPostBack Then
If Session("key") Is Nothing Then
[code]......
I'm using some session variables to store and pass data across several pages of an ASP.Net application. The behavior is a bit unpredictable though. [Code] Ok so far so good, on a normal page load. If the user completes the form action, hits the next page, and decides OH NO, i needed to change field xyz, and clicks back, corrects the data, then submits, the session variable is showing as NULL. Why would a cached session behave this way? I'm not destroying/clearing the variable, unless I fail to understand the scope of session variables.
View 1 RepliesI have a session variable in my asp.net application. The session variable holds a value from the database, that reflects a customized HTML color value.In my application, I have an asp button with server side code
btnContinue.BackColor = System.Drawing.Color.FromName(Session("ContinueColor"))
Issue: However, when I run the application, the color value is not being reflected in the button. I did double check, and the session variable does hold the correct value.There are other objects, that use session variables to display colors, and they are working fine.
Update: When I force a color "btnContinue.BackColor = Drawing.Color.Blue", that works perfectly fine.
I have 2 web pages. In the first webpage I have a text box which takes an user input.The number of controls rendered in the second page is based on the user input in the first page.I am storing the user input from the first page as a session variable [code]Now, I wish to use this session variable in the next page for initializing a global variable and what I tried to do is Dim num_Invitees As Integer = CType (Session("NoOfControls ToGenerate"),Integer)But this gives me a NullReferenceException.Can someone please suggest me what exactly I should be doing in order to use the session variable to initialize a global variable and also why the session variable's value is null while using outside a function but works fine when used inside a function?
View 1 RepliesI have a class with a subroutine as follows:
Public Sub SetPermissions()
If IsNothing(HttpContext.Current.Session) Then
Exit Sub
Else
[code]....
I know that my session variable is not yet set, hence a null value, that's why i'm trying to handle it with IsNothing, but my code still bugs out on me.
How can I access the values stored in a session object with a class in asp.net?
View 3 RepliesIs it possible to create a variable that is global for each session in ASP.NET? Usually I do this with Session:
Session("my_variable") = 10
But this necessitates casting it every time I want to use it like so:
Dim my_variable as String = CInt(Session("my_variable"))
[code]......
Currently, in my web application I have a listbox that gets populated client side (via java script) with a set of ids -- we'll call this page 1. Server side, I am populating a variable with the ids and passing it through a query string to another page -- we'll call it page 2. Now, I have a previous button on page2 which allows me to go to page 1. I'm trying to figure out how to repopulate the listbox on page 1 with the values previously selected. I was thinking of just storing the set of ids in a session variable and using it client side to repopulate the list box. Can anyone advise on how to access a session variable client side?[code]...
View 1 RepliesCurrently, in my web application I have a listbox that gets populated client side (via java script) with a set of ids -- we'll call this page 1. Server side, I am populating a variable with the ids and passing it through a query string to another page -- we'll call it page 2. Now, I have a previous button on page2 which allows me to go to page 1. I'm trying to figure out how to repopulate the listbox on page 1 with the values previously selected. I was thinking of just storing the set of ids in a session variable and using it client side to repopulate the list box. Can anyone advise on how to access a session variable client side? Here's some snippets of my code...
[Code]...
I am trying to compare a session variable to another string so that i can enable or disable image buttons. I am using asp.net vb with a sql2005 express backend..[code]
View 3 RepliesI am trying to compare a session variable to another string so that i can enable or disable image buttons.I am using asp.net vb with a sql2005 express backend
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
[Code]...
I have an asp.net website to manage projects. I realized that when I click for the next project really fast and often it overrides all the next projects with the data of the first one. I call a method to save before to go for the next project. I use also a session variable for the id of the project.
EDIT: It looks like the sever stacks the save method and the ids but keeps the values of the first project in the controls this is the ajax that calls a server method to get the id and set it in an hidden field:
[Code]...
the following web.config file is placed in a specific sub-folder on a website. It will allow the user John.Doe to access the pages inside the folder but will deny anonymous users
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<system.web>
[code]....
the dropdown list is showing data from database, but how to retrieve the selected value and store it in a session variable??
View 1 Replieshow do I overcome it? I have created a class and compiled into .dll This code
[Code]...
In Visual Studio 2008, if I do this:
[Code]....
Does anyone here know how to get the above to work WITHOUT warnings being generated?
In the following code i get a warning at line 59:Warning 1: Access of shared member, constant member, enum member or nested type through an instance; qualifying expression will not be evaluated.and.. At line 78 I get this Warning:
Warning 2 Property 'SelectedCustomer' doesn't return a value on all code paths. A null reference exception could occur at run time when the result is used.
The program compiles and runs well, but i cant' undesrtand the reason for these warnings. Any Idea ?
1: Public Class Form1
2:
3: 'Form level members
4: Private objCustomers As New ArrayList
[code]....
