Finding no of users online ASP.NET

To do this,
1) Add a new item global.asax in your website.
2) Put the following code in it

void Application_Start(object sender, EventArgs e)
{
// Code that runs on application startup
Application[“UsersOnline”] = 0;
}

void Session_Start(object sender, EventArgs e)
{
// Code that runs when a new session is started
Application.Lock();
Application[“UsersOnline”] = (int)Application[“UsersOnline”] + 1;
Application.UnLock();
}

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.
Application.Lock();
Application[“UsersOnline”] = (int)Application[“UsersOnline”] – 1;
Application.UnLock();
}

3) In the webpage where the no of online users have to be displayed make use of this application object

protected void Page_Load(object sender, EventArgs e)
{
Response.Write(“The no of users online are ” + Application[“UsersOnline”].ToString());
}


That’s it