Passing Session Variables
Jan 21, 2009I have an ASP.NET 2003 web application. There is a .vb module file within that application. Is there anyway I can pass a session variable into this .vb module from a aspx.vb page?
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Passing Multiple Byref Variables / Variables Fail To Change Calling Funct W/ Invoke
Sep 27, 2010I have code, shown below, that works all except for 1 thing: The variables being passed byRef get passed, but once modified in the else section of the "if me.invokerequired" code of RecordData, the variables are never updated in the calling function. To reiterate, the calling function does not receive the updated data that is in the variables custid and amt.When debugging, I see the data change in the else section of "if me.invokerequired", but once it returns from the callback the data is missing.[code]
View 15 RepliesMultithreading: Reading/setting Variables, And Passing Variables?
Mar 8, 2011Question 1: What is the difference between "Background Worker" and "Worker Pool" as indicated within the MSDN samples provided.
Question 2: I noticed while using, AddressOf _Function_, variables cannot be passed; what would be an efficient solution to this?
Question 3: While using multithreading is it required to invoke before setting variables, or only form properties?
Question 4: While using System.Net.Sockets is it safe/efficient to use Application.DoEvents while waiting for new data; or would be using a Do While loop be fine without DoEvents since the action would be multithreaded? Note: there can be up to 2000-3000 sockets in use at a time.
Asp.net - Using Session Variables In IE?
May 14, 2012I have an ASP.NET application that I am developing. I'm using session variables within the app.In Firefox & Chrome, they all work.But in IE (ver 9), there's one variable that's not working. I'm not sure if it's a storage or a retrieval (or both) at this point. The variable in question that I'm storing is a List(T) type. It's the only one of it's kind that I'm using. Can't help but think there's a correlation there.One other old post mentioned the possibility that cache is causing the problem, but I didn't understand the answer very well.
Dim Rec_IDs As New List(Of String)
Rec_IDs = Session("Rec_IDs")
and
Dim Rec_IDs As New List(Of String)
[code].....
Passing Datatable As Session Not Working?
Dec 15, 2011I am trying to pass the datatable of a search query to another page and bind it to a listbox. The problem is the the listbox just displays system.data.datarowview and no results.
I have listed the code below.
First page SQL and session store:
Protected Sub btnSearch_Click(sender As Object, e As System.EventArgs) Handles btnSearch.Click
[Code]....
Get Data And Set It To Session Variables?
May 14, 2010I am using a sqlDataReader to get data and set it to session variables. The problem is it doesn't want to work with expressions. I can reference any other column in the table, but not the expressions. The SQL does work. The code is below.
[Code]...
Save Variables From One Session To The Next?
Dec 28, 2010what is the best way to save variables from one session to the next.when the program starts i want the defaults to be the same but as they are changed in the program the stored value should update.
View 2 RepliesSession Variables And Arrays
May 18, 2011I loading an array with data from my data base and then putting into a session Variable. I do not get any errors on that code. When I try to put the session Variable back into an array in my .aspx page I receive the following error message: [code]
View 5 RepliesAsp.net - Session Variables On An Intranet ASP/.NET Page?
Jul 8, 2010I'm planning to use some session variables on an intranet ASP/VB.NET page, and want to make sure that I'm not missing out on anything important I should know, or that I have my information mixed up. So here's what I (think) I know about session variables.They:are stored on the server, so if I have a lot of users then they'll each be using some more memory which could lead to a slowdown.are inaccessible by the user unless I expose access. hang around/persist across user requests (i.e. each time the user makes a request from the page the data will still be there - until it times out). This also means that I need to make sure that the variable doens't have "left over" data in it.
Is there anything that I've got totally wrong, or anything I'm missing? I'd prefer not to get bitten by a bug down the road because I think I understand what's going on.
Do Desktop Applications Need Session Variables
Jan 18, 2011I am trying to create an application similar to a quiz engine. I was wondering if I need session variables to store information between different pages or I can pull the data directly out of textboxes.I am using C-sharp,dot net and WPF.
View 4 RepliesEfficient / Preferred Way Of Using Session Variables?
Jan 28, 2011I have an ASP DataGrid and I'm applying sorting to it. Well, as I was looking at an example, they had a function similar in function, different in name, to[code]...
View 3 RepliesJavascript Equivalent For Session Variables In VB?
May 31, 2011I have some VB code, which I can no longer use (long story). It goes like this:
Session.Contents("LetterVariables") = Nothing
Is there a javascript equivalent?
Losing Session Variables When Loging In With IE?
Jun 10, 2009I am trying to fix an ASP.NET application that is also written is VB and uses session variables to store the information from the logging page. In Firefox, the application runs just fine, but in IE (I am using IE 8), when I summit the logging credentials, the session variables become empty (takes me back to the logging pageThe weird thing is that when I move the privacy settings in IE (doesn't matter if high to low, or low to high) and enter the logging information again, the runs great. Also if I restart IIS 6.0 the application runs great. What's going on?
View 5 RepliesAccessing Public Class Variables In Asp.net Without Session?
Feb 15, 2012I am using this example I found to learn how to load class files and access variables through them. This is in a file called Class1.vb in the App_Code folder (this is not an app project):
Imports Microsoft.VisualBasic
Public Class my_class
Public Shared Sub my_sub()
[Code]....
How could I access the vartest variable without using a session, since if this is accessed by multiple functions at the same time the variable can be overwritten I assume. Is it possible to go the other way, where a variable is sent to a class file?
Asp.net - Session Variables Lost In A Specific Scenario?
Dec 23, 2009I've got a problem losing session variables in an ASP/VB.NET application. The application allows searching for an item or it can show an item if provided with a unique link (in the browser). It holds information about the item in session variables. In the webpage showing an Item a user can click a button which opens a window with additional information about the item - obtained from a session variable. When I search for the item using the search engine and click the button - it works OK.
When I copy the link to a browser: the item is shown, however clicking the button returns a 'null exception' - the session variables with information about the item are lost. Moreover when I provide the link for the second time the button works, the variables are there!
GridView - Using Session To Pass Variables From Page
Aug 3, 2011I have a gridview and use a session to pass the variables from the page to an edit page. This works perfectly, until you search for a number. When you search the correct record displays in gridview, but when you click edit, it passes the wrong record.
Private Sub gridview1_RowEditing(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewEditEventArgs) Handles GridView1.RowEditing
Session("wr_id") = GridView1.Rows(e.NewEditIndex).Cells(2).Text & "~/~" & _
GridView1.Rows(e.NewEditIndex).Cells(3).Text & "~/~" & _
GridView1.Rows(e.NewEditIndex).Cells(4).Text & "~/~" & _
[Code] .....
I realize not all of the code is pasted in here, because it would take too much space. Any Ideas? I'm guessing it has something to do with e.NewEditIndex
Asp.net - Use Session Variables To Prevent Infinite Web Form Popups?
Apr 6, 2012I have a web application that allows a user to view family members.
When the user clicks on a family member, it displays the member's basic info. There is also a grid displaying that family member's related family members. (e.g. User can click on the Father link. From that popup, they can then click on the Father's Father link, then click on the Father's Father's Grandson link, etc.).
To reduce the number of popups that appear on the screen, I want to prevent the user from continually clicking on family links past three members.
What is the best way to keep track on how many data forms have popped up? Or can this reliably be done with a web application?
Asp.net Mvc - Session Variables Not Saving On Initial Page Load?
Mar 25, 2011I have an MVC application which sets some session variables based on internal static IP addresses.I have built an ApplicationController to override the OnActionExecuted sub in MVC for data that I need to use throughout my application.However, the code below, which is just a snippet of my code but is edited for my post, only partially works. On initial page load, the session variables aren't saved, but after a page refresh they are. The issue I have is that these need to be saved on the initial page load.
If Session("Item1") = Nothing Then
If IpAddressShort <> "" Then
Dim locInfo = cmsRepository.GetInfoBasedOnLocation(IpAddressShort).SingleOrDefault()
If locInfo IsNot Nothing Then
[code]....
Theoretically, if I'm correct, if there is no Session("Item1") set/if Session("Item1") is empty, then the rest of the snippet should run and set those variables.How come this isn't setting those variables on the first time the page load?
SQL Server - Storing And Retrieving Session Variables During Login
Feb 20, 2009Is there a way to set session variables during login that are then available to reports? We have a reporting services server where we move and denormalize data from our transaction system for reporting purposes. In order to allow our users to login with the same user name and password from the transactional system we have set up custom forms authentication and after much trial and error it is finally working. In addition we have the authorization accessing our transactional system so that any changes in user authority is immediately reflected in Reporting Services.
Our problem now is that we would like to add some additional features such as locking down parameters depending on user authority/groups in our transactional system. We have found a way to do it but it's inefficient, basically we have stored procedures that will query our transactional system to check for access. The problem is that these queries will often be run for every report request even though the answer is unlikely to change. It would be nice to have access to session level data that can be set once during log in and then accessed from the reports.
Passing Variables From Sub To Sub
Mar 30, 2010I have my own little tutorial about passing variables, and if you'll look at the code below, you'll see how I am passing the variable from one sub to the secondsub. Here's my question, how can I pass a value back from the 2nd sub to the 1st? So if I want to sum intA plus intB, and want to return that value to the first sub, how do I do that? [code]
View 18 RepliesPassing Info To Variables
Apr 21, 2011I have a program that I am writing that asks the user for information.The program takes that info and passes the strings to a module that has a set of case statements for comparison.The program was working just fine yesterday, and now it acts like there is no information being passed to the module for comparison.[code]
View 2 RepliesPassing Two Variables To An Executable?
Sep 16, 2009I have an application I have built which is basically a decision matrix. I would like to add it to a current database as a button on the form. When the button is clicked I would like to pass header information to the executable (two variables).
I can modify the code but I am not sure where to begin?
Passing Variables Between Forms?
May 17, 2012I have a Form1, the user types a "Client ID" in a textbox if it's not a valid one, it opens a Form2 in which the user selects the correct "Client ID", once selected he presses an OK button. And there comes the porblem.. it opens a new Form1 with the Client ID that he selected from Form2, but I still have the first Form1 opened.
I have two Form1 opened...
I which to keep the original Form1, but with the value sent from Form2..
I'm using this code:
Code in Form1
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code].....
Passing Variables From One Form To Another
Apr 27, 2009I am using Visual Basic 2008 for this assignment. I have a project that I am working on and I need to be able to use form variables across the entire project.
I have looked on other forums but no definitive answers.iI have declared variables as such Public StrV21true As String and "Public StrV21False As String
Now apon assigning a string to the variable with an If Then Else Command, I go to the next form expecting that the assigned variable will be available for use in this second form but to my dismay it tells me that the variable has not been declared and will not even show up in Intellesence. Like I said before from research on the net I am using the public class in Form 1 to hold the variables and am kind of expecting the public class variables to be available through all the forms in the project. I would really like to know how to do this so as I can finish my project for class.
Passing Variables Through Classes?
Feb 8, 2012I'm having trouble passing Variable information through classes, here is what I mean.
Example:
On my Form I call on Test.Result
Test is my Class
[code].....
Passing Variables To A Sql Query?
Nov 19, 2010I have two forms and I'm trying to pass a declared variable from form1 to form2 and then pass that variable in a sql query that I have in a dataset that is bound to my form. I know that my query works but it's not producing any data. I have debugged my form and can see the data being passed in the variables elsewhere on the page but I'm not sure of the syntax within the query.
[Code]...
Passing Variables To A SQL Where Clause In VBA?
Jan 24, 2012I am getting an "Automation Error" with the following:
Dim sheetdate As String
Dim sheetdate1 As String
sheetdate = "7/1/2011 23:59:0"
[code]....
I need to pass two variables to the WHERE clause. If I manually input 'sheetdate' and 'sheetdate1' into the clause -
WHERE (((ticketorders.TimeStamp)>#7/1/2011 23:59:0# AND (ticketorders.TimeStamp),#7/2/2011 23:59:0# ...
everything works fine. The problem is I have multiple sheets and I would rather not have to add the entire sub-routine to each and every sheet. My thought is, it would be easier to create a PUBLIC sub and pass the time values (sheetdate and sheetdate1) to the WHERE clause.
Passing Variables To New Form?
May 21, 2009I've got a form in my MDI container. Lets call it Form1. I now want to show a dialog box (Form2) and pass the primary key from Form1 to Form2. Do i create a public function on Form2 called SetMe() or Do I create a public on Form1 And read from it? From a best Practice point of view, How would you go about it?
View 1 RepliesPassing Variables Within A Web Link?
Dec 9, 2009I�d like to pass the username and password within a link to a browser using VB code. This link works "http:192.168.0.26:81/forum/login.asp?username=test&password=test" when used manually but not when used within a code:
Dim username, password As String
username = "test"
password = "test"
WebBrowser.Navigate("http:192.168.0.26:81/forum/login.asp?username='" & username & "'&password='" & password & "'")
The username and password are passed onto the web page within single quotes as �test�.
Variables Not Passing From One Form To Another
Aug 31, 2011I am passing 2 variables from form1 to form2. In form2 I want it to where it will filter my dataset according to the variables in form1, before it's displayed. In form1 it works, but when passing those values (JT & WRID1) to form2, it doesn't work.
Form1:
Public Class Form1
Friend JT, WRID1 As String
Private Sub ShowForm2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ShowForm2.Click
JT = Me.dgvWLog.Rows(dgvWLog.CurrentRow.Index).Cells("dgvJT").Value.ToString
WRID1 = Me.dgvWLog.Rows(dgvWLog.CurrentRow.Index).Cells("dgvWRD1").Value.ToString
End Sub
End Class
Form2:
Dim s As New Form1
Dim JT As String = s.JT
Dim WRID1 As String = s.WRID1
Me.DataSet.Form2_Get.DefaultView.RowFilter = "WT = '" & JT & "' And WRID1 = '" & WRID1 & "'"
