Hi All,

 I have created web application using vb.net and deployed on the windows 2003 server. what is happening that multiple user cannot

 access the application means when one user access the page and he is doing some processing on the application

 like want to retrieve the user details and at the same time when another user try to access the application for some other

 processing then first user's processing gets stop.

 and it is giving error message :

 'Thread Abort Exception: Thread was being aborted'


 can u tell me what is the problem its a application state problem or session state problem or some other problem.

 i am not able to find the problem.

 any help will be very much greatefull.

 Thanks

 -joseph

It is impossible to say without seeing at least some of your code. Depending on the size of your code and how you are doing things this might be impossible to track down via a forum such as this unless you at least have some idea of which particular bit of code is causing the problem.

/- Sam Judson : Wrox Technical Editor -/

Thanks For your reply .

Below is the code :

Code of which First user accessing the Page :

Imports System.IO
Imports System.Threading
Imports System.Data
Imports System.Data.SqlClient
Imports System.Data.OleDb


Namespace data

Partial Class Proces****traction
    Inherits System.Web.UI.Page

Shared objThread As System.Threading.Thread

    Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

            If Not IsPostBack Then

                Dim sUserID As String = Request.ServerVariables("LOGON_USER").Substring(Re quest.ServerVariables("LOGON_USER").IndexOf("\") + 1)

          objThread = New System.Threading.Thread(AddressOf _startThread)

                    setRefresh("30", 2)
                    startMetaThread()

            End If
    End Sub

Public Sub startMetaThread()

        objThread.Start()
End Sub

Private Sub _startThread()

// Here i m doing all the processing of Retreiving data from database

End sub

// In this method i m refreshing the page.
Private Sub setRefresh(ByVal sSeconds As String, ByVal nIndex As Integer)

            Response.AppendHeader("Refresh", sSeconds & "; URL=dmProces****traction.aspx?sessionid=" & Me.lblSession.Text)
End Sub

End Class

End Namespace


Code of which Second user accessing the Page :

Imports System.IO
Imports System.Data.OleDb
Imports System.Xml
Imports System.Xml.XPath


Namespace dataXS


Partial Class DATAXSMain
    Inherits System.Web.UI.Page

 Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init
            InitializeComponent()

            Session("LICENCE") = "1"
        Me.lblFrameControl.Text = "<iframe scrolling=""" & "yes" & """ frameborder=""" & "0" & """ src=""" & "dmDataExtraction.aspx" & """ id=""" & "myIframe" & """ runat=""" & "server" & """></iframe>"

 End Sub

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim sUserID As String = Request.ServerVariables("LOGON_USER").Substring(Re quest.ServerVariables("LOGON_USER").IndexOf("\") + 1)

    // Here I am doing the processing of Data Retrieving from database

End Sub

Avoid starting threads in web pages at all costs.

Once you reload that first page you will be in a whole lot of hurt. The objThread variable will NEVER be set and will always be null.

When you say you are 'retrieving' the data what are you then doing with it? If you are trying to display it to the user its never going to happen.

/- Sam Judson : Wrox Technical Editor -/

I fail to see what you're doing with the threads. Looks to me like everyone is using the same thread and in which assigning user ids doesn't make sense. Or maybe I'm just seeing it wrong...

 - mega
Moving to C# .NET