void Application_Start(object sender, EventArgs e) 

    {        //ApplicationCache.loadApplicationCache();

        ApplicationCache.DoStatistics();

        Application["TOTAL_SESSIONS"] = 0;

    }


    void Application_End(object sender, EventArgs e) 

    {

        //  Code that runs on application shutdown

    }



    void Application_Error(object sender, EventArgs e) 

    { 

        // Code that runs when an unhandled error occurs

        //Exception exception = Server.GetLastError(); 

       //string message = "Error occurred in - " + Request.Url.ToString() + "and error message is - " + exception.Message + " Stack Trace - " + exception.StackTrace.ToString();       

    }



    void Session_Start(object sender, EventArgs e) 

    {

        // Code that runs when a new session is started

        lock (Application)

        {

            int i = (int)Application["TOTAL_SESSIONS"];

            i++;

	   Application["TOTAL_SESSIONS"] = i;

        }

    }



    void Session_End(object sender, EventArgs e) 

    {

       // Code that runs when a session ends.

        // Note: The Session_End event is raised only when the sessionstate mode

        // is set to InProc in the Web.config file. If session mode is set to StateServer 

        // or SQLServer, the event is not raised.

         lock (Application)

        {

            int i = (int)Application["TOTAL_SESSIONS"];

            i--;

            Application["TOTAL_SESSIONS"] = i;

        }  

    }

    /// <summary>/// Restituisce numero utenti collegati

    /// </summary>

    [WebMethod(Description = "Return number of connected clients")]

    public int Clients()

    {

        return (int)Application["TOTAL_SESSIONS"];

    }




i always recived 0 .... why ??? 
DOTT