Problem Maintaining Dataset In Session Variable
I have a web interface where the user types in ID's one at a time. After an
ID is typed in, a button is clicked and the button click event has code that
does a query and returns a data reader and then appends the data to a
dataset that is built in the Page_Load code in the if(!isPostBack) block.
When I try to add a row in the button click event code I get an error saying
that "Object reference not set to an instance of an object". I'm saving the
dataset in a Session object and then restoring it in the else clause of the
if(!isPostBack) block. I've pasted code below, please help. I'm relatively
new at asp.net development but have lots of asp and ado experience. Code:
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I am having trouble maintaining Session state between pages within my website. I had someone test the pages on their website and sessions state was maintained between pages, but for some reason, the same pages on my server do not. what might be happening?
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i need to use the returned value from a database in my code. it is not to be displayed on a aspx page. I can connect to a database and return the one value i want using SQL SELECT.....FROM.....WHERE...... condition. this is returned as a dataset.
Is there anyway i can return this value from the database as its real value as there is only 1 record? If not how can i retrieve this 1 value and use it in my code? Do i need to loop through the dataset and return it as a string? I want to retrieve 4 values from 4 difference database tables and them up in my code and then return the total value to a different database table.
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I'm inserting data into my SQL server database via an ASP/HTML form. I have a textarea in the form where the user can enter content and I want to maintain any new paragraphs entered - however, when i insert the content into the database and reproduce it on another page, the spacing is lost and all the content is displayed in one paragraph. Is there a simple way to get round this issue?
The column on the database is set up as Type - Text (size 16).
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I have a method that uses Microsofts Data Block to get me a value from the database. This returns a DataSet. I use this kind of data as string a lot using the following:
ds.Tables[0].Rows[0].ItemArray.ToString()
The problem is: I do not want a string now. I need a int, because the value is a int which I have to increase with one and then return back to a tring again to put in a disabled textbox.
I just need to know how to get from a DataSet to an int or from a String to an int.
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I am pulling 40 records from a MS Access database, and displaying them in an .asp page..
The majority of times, there are no records to display in the last 10-15 records, so they show up as a blank space on my web page, pushing the rest of the content further down.Is there any way that I can elliminate this?
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I have a DataGrid which has checkbox columns. The data source is a run-time created data set that I store in a session so I can rebind it during postbacks. I don't have a database or xml file, etc.if it's possible to edit a dataset directly? So when I click on a checkbox it will change the value in the dataset and store it back into session?
If this is not possible how can I use arrays or vectors to temporary store my checkbox statuses? I guess it's not possible to have one DataGrid have more than one datasource
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I delete the files/cookies and clear history from the IE 6.0 browser and try to write in a text file use FSO but it dont write any thing in the file needs Code:
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I'm trying to set a session variable after displaying a form, then capture
the Session variable on postback. For some reason, the below code always
returns the form, not the "Step 2" results part.
What am I doing wrong? It's on a local network server, not on the web if
that matters.
<%
'* Step 2: Display results
'**********************************************
If Session("PageAction") = "view2" Then
Response.Write "Results"
'* Step 1: Display form
'**********************************************
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I have created a session variable.... and i have to write code to check for
this session for each ASP webpage in my website....Is there a alternative
I do not want to repeat the same code for valid session.... in each page..
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I first create a session variable 'client' in the login.asp file
The login.asp file opens a file (xxx.asp) with an include file
If I write
<!--#include file="../../../data/" & session("client") &
"/language_ger.inc"-->
I have a message stating that the application can't find the file.
If I write the path without the variable (" & session("client") & ")
<!--#include file="../../../data/eurovini/language_ger.inc"-->
it works without any problem.
Question
- is there is an error in the syntax?
- is it possible to include this kind of variable in an include file.
And if not, any idea to get the same result?
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I'm new and I hope I explain this correctly.I have a products page which populate products dynamically with checkboxes. when the form is submitted, I check for selected boxes using the split(). My problem is, products page submits the form to client.asp, and within that page is client info. then the client page is submitted to confirmOrders.asp, which will display client info, and products selected. the split() works fine within the client.asp page. I'm trying to assign the checkboxs to a Session variable and use it on confirmOrder.asp. Then display the session variable on confirmOrders.asp page. I know I can do everything in one shot with confirmOrders.asp, but the client wants to display the client.asp page then the latter. hmm...hope this makes sense.
<client.asp>
Session("myarray") = Request.Form("chkproduct")
<orderConfirm.asp>
strP = Session("myarray")
p_Array = Split(strP,",")
For i = 0 to UBound(p_Array)
Response.Write p_Array(i) & "<br>"
Next
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Is there a simple way to store session variable on the client-side
javascript or retrieve the value of the session variable from the
server-side session("variable") script onto the client-side script?
I want to keep the value of user entry on the text field of an html form
after refreshing.
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I have variables declared like this:
<p class = "hide">
<input type="text" name="nameVal" value="">
</p>
How do I make the "nameVal" as Session variable?
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Quit simple: I try to make a session variable on a hiddenframe like:
document.contexthiddenform.URLattach.value = URLvar;
document.contexthiddenform.target = 'hiddenframe';
document.contexthiddenform.action = 'context_hiddenframe.asp';
document.contexthiddenform.submit();
}
</script>
<%
session("sesURLattach") = Request("URLattach")
Response.Write "<script>" & vbcrlf
Response.Write "alert('" & session("sesURLattach") & "');" & vbcrlf
Response.Write "alert('" & Session.Timeout & "');" & vbcrlf
Response.Write "</script>" & vbcrlf
%>
</form>
The value of session variable is shown and the timeout value (60) shown as well. But immediately I get the error message "a timeout has been occurred, you have to log in again". If I make the highlighted sentence comment then I don't get the error.
Has somebody an idea why I receive immediately the timeout error?
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A user field called 'Custom1' exists in my data base. This user field is used to hold a URL path to a custom download page for clients. Each client has their own unique URL which directs them to specific locations.What would the proper format be for the variable:
=Session("Cutstom1")
to be able to be displayed as a hyperlink with the label: "DOWNLOADS" while at the same time sending the current user to the 'value' / 'path' to which the Custom1 field contains? I am not an advanced coder and am just starting out with basics.
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I assume that mostly,asp programmers use their own session variable to know whether a user is to be considered is-logged-on(together with a home-written log-on form web page).
However, I wonder if there is a convention for the name of such a variable?And does asp/iis have a built-in is-logged-on status variable? For example when IIS is to render a normal html page with an acl that invokes a basic authentication, can I as an asp programmer make use of that status variable, and can I write to it to force a logout programatically?
So, this is not about it there is a session as such, it is about beeing logge-on inside an asp-session. I've looked around but haven't found any good info on this.
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I have drop down for selection of council - it is then passed to a session variable - it works fine to display the variable, but when I put it into a hidden field, if the value was Milwaukee it is fine, but if the value was Green Hills, it only puts Green in the hidden field. How can I fix this - I need it to put Green Hills in the hidden field.
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when a session variable is declared,how long does that variable last?this isn't coming out of the global.asa.i'm pulling a field out of a db and declaring it with session(whatever)=whatever and then calling it out on the page.
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i don't know where else to go, if there is a better or more appropriate forum for this question please let me know.
I have just moved to another isp host and some of my pages use session variables. I have a session variable, amongst others that hold the username and customer number to display data. The session variable value keeps disappearing giving me ADODB.Fielderror '800a0bcd' errors.
If i hot the refresh button a few times the session variable data comes back. Somebody please tell me they've experienced this 'cos i'm losing my mind ! I've updated the page to show the variable, and it does and i've removed underscores from filenames (apparently a possible problem with IIS 6)
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i'm using the dundas freelib upload code to upload files in my website. when the user choses to upload a file a new window is opened and the upload procedure goes fine and the file is uploaded successfully. but the problem is the i want to know the name of the file in the parent window to save it in the database.
i tried to use a session variable which contains the name of the file but it dosen't work. the parent window contains a form which is used to insert new data in the database so i can't use the upload window to insert the filename in the database.
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i don't know how to retreive the session variable from the previious page..i have also problem querystring application because the browser execute very slowly..and sometimes page will not be displayed.
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I need to create an array with a session variable. According to my book, the following should work,. but if fails
for each key in request.QueryString
if left(key,6) = "cboRun" then
iIndex = cint(mid (key,7))
response.Write(iIndex & "<br>")
session.Contents("iRunNo")(iIndex)=iIndex
end if
next
it is the (iIndex) part which fails. If I remove this, then I can create a
single session variable.
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i m receiving username from the user using form's post method (request.form("username"))and then created session variable as follow..
Code:
username = request.form("username")
session("username") = username
on other page i get username from session variable as follow.
Code:
username = session("username")
this workes fine when i run it on the same PC that is hosting my page(on which IIS is running)..however problem arises when i request page through different PC in the LAN.Nothing is assigned to variable username.
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Can I prevent session varaible shared by the new opened browser? For example, if the user has login and viewing a page, when he opens another browser, the user has to login again if he want to veiw the same page in the new browser.
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Am putting a web front end over an existing SQL application, creatind a ado recordset which is to be displayed in a table on the screen, however when the page runs the recordset returns correctly however only the first two columns have data in, the remaining columns in the table are blank.
Have to use both an sqlview and base sql select statements for the recordsource both the same result. I know it is not a permission problem as I can run the query in sql with the same credentials ok.
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I have a DataGrid which has checkbox columns. The data source is a run-time created data set that I store in a session so I can rebind it during postbacks. I don't have a database or xml file, etc.
I am wondering if it's possible to edit a dataset directly? So when I click on a checkbox it will change the value in the dataset and store it back into session? If this is not possible how can I use arrays or vectors to temporary store my checkbox statuses? I guess it's not possible to have one DataGrid have more than one datasource.
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i have a dataset that has say 3 cols (id,name,marks). i want to calculate sum of all marks by traversing all rows in dataset.
like ,
sum = 0;
val = Ds.Tables[0].Rows.Count;
for (int i = 0 ; i< val; i++)
{
sum = sum + Ds.Tables[0].Rows[i].ItemArray["marks"].ToString()
}
but i am getting error in underlined position .
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First, I like to know if I can specify how long a session variable could expire?
I am having problem with user logged in period when using session variable.
When I logged in and go away from keyboard for like 10mins. By then I have to login again in order to post or any website features that requires login.
I have not yet create a cookie for the user when they are login.
What is the proper way of doing it?
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Im trying to pass the 'month' variable which is a session variable from one page to another. It manage to appear on the other page in a textbox but when I try to pass it to the recordset, it fails. Can I know why?? This is the page which I'm passing the variable to. Code:
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I was wondering if there is a way to "trim" the session value in ASP. I know that "trim" takes the spaces but what I want is to shorten the actual txt. For Example I have a Session.MM_Username.
This session return the users email address because I am using this as there username for when they log in. Is is possible to only return the characters before the "@" symbol? when they log in I want the user to see "Welcome abc" not
see their email address .
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I am storing my site name as a variable in global.asa. I am trying to retrieve it and use it in a page title. The following is what I am using.
<% title="Homes in "& session("communityName") & ", " & session("cityName") & " | Online Resources" %>
I can use Code:
<%= Session ( "communityName" ) %>
anywhere in the body and it works. So I know that the variable is not empty.
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I'm unable to update a session variable
btween pages. I can read them after I set in global.asa
and I can change its value within the same script but when
I go to another page, the session variable remains
unchanged.
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