On Default.aspx.vb page under on_load sub I'm setting a value on Session() but, if I try to access the same value on Default.aspx, it shows as empty. Here is the code:
in default.aspx.vb
Session("id_group") = GroupInfo(1)
LabelUser.Text = Session("id_group")[code]...
I'm able to print the value from default.aspx.vb but not from default.aspx
----> I have datatable which is passing to another page in session variable.
----> Now on another page i take the session variable into datatable.
datatable ds_table = new datatable();
ds_table = (datatable)session["table_value"];
----> so problem, is that , when i filtering some rows from ds_table . that taking effect in the session variable. if some rows deleted from ds_table. then it is also deleted from session variable.
----> so, anyone tell me why is this going to happene?
I have an asp.net website in which users can submit reports. Another tester and I tested this page at the same time and when I went to review the information I submitted, it displayed information that I didn't submit. It displayed the info submitted from the other user.
I use session variables for these values. I don't understand how this happened? What can I do so each user can individually submit their information without overlapping some one else's information? The plan is for multiple users to be able to use this page to submit their weekly layer reports.
The first example of code is how I add the session variables from the textboxes.
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The second one is how I display them in labels on a confirmation page.
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I have a website for a simple game. When people sign in their Player ID is stored in a Session variable. I have integrated SMS payments so that my players can buy credits to use to play. This is where the problems start:
To buy credits, players are presented with an .aspx page that holds an IFRAME of the SMS payment proviers form. A code is entered, and the IFRAME POSTS to a URL on the providers server. It is then redirected back to an URL on my server(www.XXX.com/process.aspx), where I handle the results (i.e adds credits to th players account if the payment was successfull).
However, the session dies on return.
I tried with cookies, and saves the player ID in a cookie, but when upon return to www.XXX.com/process.aspx I cannot read the cookie? I'm checking for if (cookie == null) and it evaluates to TRUE, so the player is redirected to an error page.
How come the cookie cant be read? Is it because the POST is coming from an outside URL? And, what about when I do it with a session variable? Same thing there?
I am developing a web part that uses AJAX Timer and Update Panel to perform some data check. There are two buttons outside the Update Panel on the web part that I also want to maintain during the Timer postback. I cannot put these two buttons in any UpdatePanel because they need to call Response.Write() to display some Excel data to users in their On_Click event. My current solution is using ViewState to maintain these two button in On_Load event. However, I am not sure if this is a correct solution (haven't tested it). Does any one know that during a Timer postback, if I disable/enable these two buttons using ViewState in On_Load, will it update the page properly with the two buttons disabled/enabled? Or will it ignore any control that are not in the UpdatePanel regardless where you maintain it? If my solution is not a good practice, can someone suggest other alternatives?
View 1 RepliesI have done a web appllication and when run simultaneously from different locations, the one that is started first would use the one that is started late's session variable and datatable contents. This is an exams web app and pageone.aspx results should never be used for pagetwo.aspx's results, because they are not the same questions.
What can I do to prevent this from happening. I am desperate, people are standing by to do exams and time is not on my side.
I want to display all the session information of my asp.net page (aspx) in the page. How can I do that? The programming language is C#.
View 2 RepliesI would love to use hidden field value but I think I am missing something to do.
Since every page refresh or staying a little bir longer on the page, the value is missing.
[URL]
How can i do the this cookiles suff above...?
I use hidden value to keep the url to redirect to next page. May be i sould not keen on using hidden value, session variables are better?
I have a aspx called user-photo-upload.aspx and another aspx called get-photo.aspx. I set the Session["PhotoId"] in the page_load method of user-photo-upload.aspx.
If I visit the user-photo-upload.aspx through the browser normally, the session can be retrieved in get-photo.aspx. But if the flash uploads photo to the user-photo-upload.aspx page, I can't get the Session["PhotoId"] in get-photo.aspx.
I discover that the Session ID is different when visiting the page using browser normally or by flash. I don't know why flash uses another session.
Ive created an object and placed it in the session, then in my .ashx handler I want to get that object from the session. The problem is that its always null !
heres how ive placed the object into the session from an aspx page
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how to create a unique name aspx page when session started and delete when session is End in code behind
View 4 RepliesUsing VS 2010 RC, VB, and Forms authentication to allow access to the site, depending on the login rights of a user, I want to turn on and off access to certain pages. I can turn on and off buttons to access the pages, but a user can type the page into the url, and it will still go to them.
View 5 RepliesI have application variable in global.asax like
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I wnat to aacess this path with images in aspx(design-source) side. I successfully tested this with html controls but it contains error with server controls here is the aspx content
[Code]....
Problem result is
[Code]....
Is it possible to use a session variable in the markup aspx page ?
Cause I have a gridview that use an sqldatasource and in the UpdateCommand I want to include a the session variable : session("username").
Ex :
UpdateCommand="UPDATE departments SET DEP_name = @DEP_name, DEP_active = @DEP_active, DEP_date_stamp = CONVERT (CHAR(8), GETDATE(), 112) + ' ' + CONVERT (VARCHAR(8), GETDATE(), 108),
DEP_user_stamp = <% session("username") %> WHERE (DEP_mnc = @original_DEP_mnc)">
This give me an error :
Server tags cannot contain <% .... %> constructs.
The line "Return strLoc" below shows the green line underneath strLoc with the message "Variable 'strLoc' used before it has been assigned a value." In fact, it returns the value just fine to the calling module, so I'm wondering why it's giving this message and how to prevent it.
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I assigned a int value to to one of the cells in an array and then output that value to a label. The label correctly displays that value however when I try to get that value later in a different method the cell returns a 0. I think that the problem is that I shouldn't of made the array on the outside of a method; I checked the code that deals with the array about 3 times and it all seems fine. how I should create, get, and set this array. I was setting the value of the cell like this
arrayForXps[0,1] =Convert.ToInt32(ddl_att_desLvl.SelectedValue); //This value is never zero.
I was getting the value like this Label.Text = Convert.ToString(arrayForXps[0,1]);
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I am trying to access a user's login credentials to find out if they are an admin user or not. This way I can assign session variables to them and show certain aspects of the web page that other users won't see. I unfortunately keep getting this error when trying to dim a variable to assign the values too.
Variable Nuid is used before being assigned a value.
Variable AdminUser is used before being assigned a value.
Code:
Protected Sub checkAdmin_Click(sender As Object, e As EventArgs) Handles checkAdmin.Click
Dim strNuid As String = Request.Form("Nuid")
Dim cnString As String = ConfigurationManager.ConnectionStrings("snfTimeSystemConnectionString").ToString()
Try
Using cn As SqlConnection = New SqlConnection()
cn.ConnectionString = cnString
[Code] .....
I was working on my homework, making a website obiously, but I have a small problem with the griedview. I wanted to add a button on the end of the row, but I receive some error notifications and warnings too...
Code:
Imports System.Data
Imports System.Data.SqlClient
Imports System.Web.UI.WebControls
Partial Class Search
Inherits System.Web.UI.Page
[Code] ....
There is this error too:
SeverityCodeDescriptionProjectFileLineSuppression State
ErrorBC30518Overload resolution failed because no accessible 'Add' can be called with these arguments:
'Public Overloads Sub Add(column As DataColumn)': Value of type 'ButtonField' cannot be converted to 'DataColumn'.
'Public Overloads Function Add(columnName As String) As DataColumn': Value of type 'ButtonField' cannot be converted to 'String'.GIPH:GIPSearch.aspx.vb31Active
I have an webforms app that loses it's session variables on response.redirect. I've read Bertrand Le Roy's blog about this and still can't get it to work. The page works in production. However, when I try in the VS2k8 IDE, the session variables are there right before response.redirect and on the first line of the next page, the variables are nothing. I've confirmed the session id is the same so I'm not skipping sessions. The target page is relative so the web server doesn't think we're changing sites (as confirmed by the sessionid).
Response.Redirect("menu.aspx", False)
I'm pretty new to silverlight and asp.net but I have a strong background in c#. I am currently developing a c# asp.net application with silverlight elements. I was wondering if it was possible to have a user say click on an image that has a certain value associated with it and have that value access from a c# variable held outside the silverlight application.
View 2 RepliesI'm messing with setting some values in javascript and I assumed my input box would have the same id as my original asp.net textbox that created it... it doesn't.
Asp.net added gridview1_ctl02_ to the beginning of all my id's. I see that 'gridview1' is coming from my gridview ID but what is ctl02 and can I assume that will always be what's added or is there a better way of getting this object sent to my javascript?
Is there any solution for this issue.
http://forums.asp.net/t/1006536.aspx
I'm fairly new to ASP.net development as may have been noticed by some of my other posts and so here goes another one.I have a web page in which I allow users to enter data that will be used to populate a database and then graph data based on the information that was saved in the database. I have 10 sets of criteria that the user can enter and as they enter values for each individual set, I make sure all the parameters are filled in and set a variable called blnParm1, blnParm2, blnParm3, etc. Anyway, as each DropDownList box fires off an event the values of my blnParm variables is reset because each time the event is fired the page is PostBack therefore my variables are redeclared. I know the page is being PostBack because each of the DropDownList boxes have AutoPostBack set to true. I had to do this so that I could get the OnSelectedIndexChanged event to fire for each of the DropDownList boxes. So, how do I preserve my variables through this PostBack or how do I get the events to trigger without calling AutoPostBack?
Some more info, my variables are declared globally in my aspx.cs file as private bool. The code is working like it should as far as populating drop downs dynamically based on other data input by the user, the controls all have their values preserved as the page is PostBack.
I am stuck with a problem. I have a product page which consits of 2 content place holders. in one of them there is gridview bounded with produtcs and in the other there will be dynamically generated checkboxes used to filter the grid view. upon clicking a checkbox the gridview is filtered showing the products that match the checkbox criteria AND the checkboxes must also be filtered so that checkboxes which were available for previous products should be deleted.
I am loading the checkboxes in the page load. When I enable viewstate for the checkboxes I get the following error:
Failed to load viewstate. The control tree into which viewstate is being loaded must match the control tree that was used to save viewstate during the previous request. For example, when adding controls dynamically, the controls added during a post-back must match the type and position of the controls added during the initial request.
when I disable the viewstate of the checkboxes I get the following error:
An error has occurred because a control with id 'ctl00$refineProducts$ctl04' could not be located or a different control is assigned to the same ID after postback. If the ID is not assigned, explicitly set the ID property of controls that raise postback events to avoid this error.
Code for my page_load event:
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I have a publice variable to be used in the same webpage. when the user click on button 1, it does some process and assign a value to my public variable. After that, the user can click on button 2 which needs the public variable value to function. However I see the value of the public variable is 0 when I click on button 2.