C# - Add List <string> In Session State

Jun 14, 2010

Is there a way to add List in session? or any other way to pass the values of List in another page?

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Similar Messages:

C# - Session State Of Checkbox List

Apr 20, 2010

in storing the checkbox list items in session. I have a checkbox list as follows

asp:CheckBoxList ID="cblScope" runat="server"
asp:ListItem ID="liInScope" runat="server" Value="true">In Scope (Monitored)</asp:ListItem>
<asp:ListItem ID="liOutOfScope" runat="server" Value="true">Out of Scope (Unmonitored)</asp:ListItem>

I have to store the value of the checkbox in session when they are cheked.

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State Management :: Get A List Of Session Variable?

Jun 16, 2010

Each time a session starts, I save

Session("UserName")= xyz$

My question is:

what would be the vb code to get a list of all "UserName" 's

(session alive at this moment) ?

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State Management :: How To Get List Of All Session On Server Without Storing Them Anywhere

Jun 3, 2010

get the list of all sessionid which will be running onto server without storing them anywhere.

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State Management :: Session - Call Function - List Everything

Jul 6, 2010

Here is what im trying to do...


And here is where i call the function


Output is System.Collections.Generic.List`1[Model.Friend] i would like it to list everything thats in the list.

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State Management :: Keep Updating Session Object With A New List C#?

Sep 30, 2010

I have a Session object

Session["MyListObjects"] = null;

When a user hits a button I want to creat a List<string> object and add to session object.

Let's say if user hits the button 10 times, I would get 10 List<string> objects and

add to Session["MyListObjects"] and

Finally I want to read all the List<string> objects from the session object.

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State Management :: Navigate Through A List Stored In Session?

Aug 31, 2010

I would have a dataset that I would break into 5 new generic LIST<>. Now the user needs to see one record at a time and navigate through the list

Fields like
From date : Text box with calendar
To Date : Text box with calendar
Manager Reporting To : Drop down list
Buttons on Move Back and move Forward

Now I would have 4 such similar lists which I have to pick up from the audit table. When the user clicks on move back and move forward buttons he should be able to navigate through records in my list that I have fetched in the beginning . I can store itin a session or viewstate till it gets updated again. How do I achieve this.

Should I be writing a webmethod to go back and pick up the next record agian and display

Can I also a gridview instead of textboxes.

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State Management :: Connection String In Session Variable?

Feb 7, 2011

Is it possible to assign the connection string in session variable and is it the good way to declare in session.

provide the sytax for accessing connection string from session variable

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.net - String Exists In A Collection Stored In .Net Session State?

Jan 8, 2010

I have an ASP.Net app that retrieves a collection of roles for a given user. Each role is a string. There's rarely more than 2-3 roles for any one person.I wanted to store the colelction of roles in Session state to save the time accessing the DB on each request.I basically want to write code that checks if a given string exists in the collection to test if the user has that role or not.My question is...what's the best way to do this? Is an array the best collection to store the role strings in Session with? Or is a dictionary better? I figure an array will take less memory (I don't really need a key + value) although a dictionary might lookup faster.

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State Management :: Saving And Casting A List Of Date In Session?

May 18, 2010

I am trying to save the every date clicked in a List of Date using a session variable. I am getting a casting error ..."when casting a number the number must be less than infinity".


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State Management :: Secure Query String Or Session Variable

Aug 30, 2010

Example scenario:
User login has a list of associated 'accounts' it has access to... this list of accounts is stored in a database table, say tblAccountAccessControl, something like:

login, accountID
userA, account123
userA, account456
userA, account798
userB, accountABC
userB, accountDEF

This info is used throughout the web application and determines the 'domain' of information the particular login has access to. For example there are many other tables that have the 'accountID' field and whenever a page pulls data from the table it only pulls data that the currently logged in user should be allowed to see, based on that tblAccountAccessControl data.

The security question:
Do I need to query the database every time I need to get this list of allowed accountID's? I was about to use a plain old query string to pass a particular accountID to another page but quickly caught myself as I realized that would be a major security flaw (the receiving page was going to use that accountID to grab info from the database, and there would be nothing preventing a user from simply typing in a url manually to get data from an accountID they are not supposed to be allowed to view). So I then thought I'll just store the list of accountID's in a session state variable so they will be carried with the user throughout the session.

But then I remembered there are tools out there that allow you to easily intercept and modify asp.net viewstate information and I'm not sure if that would included session state variables, but I'm guessing they would. Is there a way to create a secure query string? If I used session state would that session state information be exposed and modifyable by utilities out there? Am I just stuck having to query the database every time I need this info to assure security? What about encrypting it and then storing in session state variable (just thought of that one)?

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State Management :: Casting Session Object To Generic List Fails?

Feb 27, 2011

i'm having a gridview with textboxes and i'm allowing user to enter all the textboxes and when submit button is clicked, I'm constructing the Object and adding all the rows to LIST class.,After that i'm putting that LIST elements in a session. Everything is fine, But when i try to cast the session object to LIST type and pass it to XML serialization, I cannot see the elements in the list and it is showing LIST as NULL. I can see the generated XML string with ROOT and my classname as attributes without no data.

Here is the below code:


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State Management :: Use Session (User) In FormView Select Command String?

Jan 1, 2011

Parser Error

Description: An error occurred during the parsing of a resource required to service this request. review the following specific parse error details and modify your source file appropriately.

Parser Error Message: Server tags cannot contain <% ... %> constructs.

Source Error:


Source File: /Dec-12/myprofile.aspx Line: 101

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Can Set The Connection String For Custom Session State Mode In Global.asax File

Feb 5, 2010

Can I set the connection string for custom session state mode in global.asax file? I cannot hard code the connection string in the webconfig file. ,I will get the connection string at runtime,Can i set the connection string for custom sessionmode/sqlserver session mode in the global.asax file(like in application statrevent, or aquirerequeststate event.If YES How to do that?

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Web Forms :: 3.5 Error: Unable To Make The Session State Request To The Session State Server?

Dec 7, 2010

Have not run the ASP.NET Development Server for a while. Today I copied a production website to my workstation and ran it with VS 2008. The following error message popped up. What is the problem with the ASP.NET development Server on my workstation? The website on the Production server still ran okay.Unable to make the session state request to the session state server. Please ensure that the ASP.NET State service is started and that the client and server ports are the same. If the server is on a remote machine, please ensure that it accepts remote requests by checking the value of KEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesaspnet_stateParametersAllowRemoteConnection.
If the server is on the local machine, and if the before mentioned registry value does not exist or is set to 0, then the state server connection string must use either 'localhost' or '' as the server name.

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State Management :: How To Build Comma Delimited String Of Those Values And Stick Them Into A Session Variable

Feb 11, 2011

I have this code that loop through table controls how do stick the seleted information into a session variable. Then i have to pass it into another page table control.example code


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State Management :: Session Variable - Error - FormatException: Input String Was Not In A Correct Format

Jan 17, 2011

I would like to know if the way i'm dealing with session variables is the right way, and also how to fix this error i'm getting:
FormatException: Input string was not in a correct format.

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State Management :: Error :Session State Has Created A Session Id, But Cannot Save It?

Nov 18, 2010

I read the solutioin for this error, at the following link :http://forums.asp.net/p/1046935/1576341.aspxbut I am still not clear what exactly causes the error. I have two doubts :1. Can anyone please elaborate a bit on this issue, with any example ????2. Is there any drawback of this approach ?

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What's Difference Between Normal Session State And Cookieless Session State

Feb 16, 2010

In ASP.NET, I'm a bit confused about role of cookies in session state. Whats is the difference between normal session state and cookieless session state?

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State Management :: Application State And Session State?

Oct 2, 2010

User Interface: 2 Labels; 1 Buttons

Requirements: Create a Web Page in ASPx that will do the following:

1)One label will provide a count of how many times Button 1 has been clicked in the current session.

2)One label will provide a count of how many times Button 1 has been clicked by all users of the application. The Application Code for the Button should start at 100 (set this in the Global.asax file). this is what i have so far but i cant seem to get the application state to work properly.


Partial Class _Default
Inherits System.Web.UI.Page
Dim clickcount As Integer

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

If Session("ClickCount") Is Nothing Then
clickcount = 0
clickcount = CInt(Session("ClickCount"))
End If
If Not IsPostBack Then
If Request.Cookies("UserName") IsNot Nothing Then
Label1.Text = "Welcome Back " & Request.Cookies("UserName").Value & "."
End If
End If
Dim clickCounta As Integer = CInt(Application("ClickCount"))
End Sub
Protected Sub PostBackSession_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles PostBackSession.Click
clickcount += 1
lblClkCnt.Text = "Current Click Count is " & clickcount
Dim clickCounta As Integer = CInt(Application("ClickCount"))
clickCounta += 1
Application("ClickCount") = clickCounta
AppClick.Text = clickCounta
Dim nameCookie As New HttpCookie("UserName", _
nameCookie.Expires = Now.AddYears(1)
End Sub
Protected Sub PostBackSession_PreRender(ByVal sender As Object, ByVal e As System.EventArgs) Handles PostBackSession.PreRender
Session("ClickCount") = clickcount
Application("ClickCount") = clickcount
End Sub
End Class
<script runat="server">
Sub Application_Start(ByVal sender As Object, ByVal e As EventArgs)
Dim clickCounta As Integer = CInt(Application("ClickCount"))
Application.Add("ClickCount", 0)
End Sub
Sub Application_End(ByVal sender As Object, ByVal e As EventArgs)
Dim clickCounta As Integer = CInt(HttpContext.Current.Application("ClickCount"))
End Sub
Sub Application_Error(ByVal sender As Object, ByVal e As EventArgs)
' Code that runs when an unhandled error occurs
End Sub
Sub Session_Start(ByVal sender As Object, ByVal e As EventArgs)
End Sub
Sub Session_End(ByVal sender As Object, ByVal e As EventArgs)
End Sub

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State Management :: Session Mode State Server - Sending Asynchronous Request

Nov 5, 2010

Customer were getting "View State Validation Error" due to worker process recycling at our production webserver and to fix that i applied machinekey and then move my Session state Mode from In Proc to State Server to retain session data and not kick out the customer to relogin. I had serialization issue with one object which has to be stored in session but when i moved it out of session i could able to resolve the issue.

But doing all these i was partly successfull in keeping the user in their session when Worker Process recycle event occurs.I was able to refresh the page or make a post back by clicking the refresh button and also able to retain the session values. But the Problem occurs when sending asynchronous request to server which we do periodically every 15 minutes from the moment the user logs in.The web page doesnot update data on website when sending asynchronous request.By Debugging I found at this particular code point it fails to make a postback which is required.

<%=GetHintFromServer%> (When there is no Worker Process recycle i t gets replaced by
WebForm_DoCallback('__Page',message,ShowHint,null,null,false) on postback) Everything works fine when there is no Worker Process Recyling but when it happens looks like sending request asynchronously using javascript fails .Remember When I make a post back by manually clicking submit button everything works fine.

function SendRequest(msg, isBusy, chartMsg, vesselMsg)
_busy = isBusy;
if(chartMsg != null)
_element.SetMessage(true, chartMsg);
if(vesselMsg != null)
_element.ShowVesselLoading(true, vesselMsg);
_stuckWatchdog = setTimeout( "ClearPendingRequest();", 60000);
var message = msg;
var context = '';
alert( "Exception error on SendRequest(): " + e);

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State Management :: Unable To Serialize The Session State In 'StateServer' And 'SQLServer' Mode

Dec 12, 2010

I am new to .net 4.0 and am using EF Model and SessionState Mode=SqlServer and I am getting this error below:

Unable to serialize the session state. In 'StateServer' and 'SQLServer' mode, ASP.NET will serialize the session state objects, and as a result non-serializable objects or MarshalByRef objects are not permitted. The same restriction applies if similar serialization is done by the custom session state store in 'Custom' mode.

I checked the stack trace and its complaining about

[assembly: global::System.Data.Objects.DataClasses.EdmSchemaAttribute()]
[assembly: global::System.Data.Objects.DataClasses.EdmRelationshipAttribute("PoplarGroveModel", "tblMenuRole", "tblMenu", global::System.Data.Metadata.Edm.RelationshipMultiplicity.Many, typeof(PoplarGroveDataModel.Menu), "tblRole",


I marked it as serializable but then it complains about System.Data.Objects.ObjectContext is not marked as serializable and hence throws the same error.

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State Management :: Recreate State Session Database In SQL Server 2008?

Apr 5, 2010

Our ASP.NET App uses ASP State Session Management and has been rebuilt about 2 years ago [With .NET Framework 2.0]. We are currently in .NET framework 3.5 and have moved to SQL Server 2008 - but continue to use the same ASPState database. The State database has been upgraded to SQL Server 2008. Since then we have are seeing timouts/locks on ASPStateTempSessions table. I am wondering if we have to rebuild this database from scratch with some newer scripts?

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State Management :: Asp Create New Session State Cookie Each Time On Debugging?

Jan 21, 2011

I'm using the following line of code to display the number of users currently logged on:

lblNoOfUsers.Text = Membership.GetNumberOfUsersOnline().ToString()

I'm still debugging my application so it's on the local server. As I debug and stop then debug again, eventually lblNoOfUsers.text turns to "0" instead of "1", even as I'm navigating my application. It only turns to "1" again if I log out and sign back in. It's almost as though Membership.GetNumberOfUsersOnline my login are referencing two different session states. How is this possible? Does asp.net create a new session state cookie each time I start debugging?

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State Management :: Losing Session State In Global.asax File?

Feb 2, 2011

I am trying to set a session variable in the global.asax file and keep running into the problem that the Session is null.

I am running my application in VS2008 and using asp.net 3.51.

Here is my code:

1. In my web.config file I have enabled the session state and added the following line;


2. In the Session_Start procedure in the Global.asax file I set the session variable to a default value.


My problem seems to be that when the Application_Error procedure is executed the session state is lost.

Does anyone know why the session state isn't available in the Global.asax file.

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