Display the no. of visitors on a given web page.

Program:

default.aspx


<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default10.aspx.cs" Inherits="Default10" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
 
    </div>
    </form>
</body>
</html>


Default.aspx.cs


using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class Default10 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        
        Response.Write("<h1>Currently number of users browsing site are " +  Application["CBrowsing"].ToString());
    }
}


Global.asax




<%@ Application Language="C#" %>

<script runat="server">

    void Application_Start(object sender, EventArgs e) 
    {
        // Code that runs on application startup
        Application.Add("CBrowsing", 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

    }

    void Session_Start(object sender, EventArgs e) 
    {
        // Code that runs when a new session is started
        int x = int.Parse(Application["CBrowsing"].ToString());
        x++;
        Application["CBrowsing"] = x;
    }

    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.
        int x = int.Parse(Application["CBrowsing"].ToString());
        x--;
        Application["CBrowsing"] = x;

    }
       
</script>

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