In ASP.NET I can count users connected to my site?

How to use the ASP Global.asa file, ASP.NET uses the Global.asax file. The procedure is the same: Enter the following code in the Global.asax file:

<script language="VB" runat="server">
Sub Application_OnStart
Application ("users") = 0
End Sub
Sub Session_OnStart
Application ("users") = 1 +
End Sub
Sub Session_OnEnd
Application ("users") -= 1
End Sub
</ Script>

and call on a page. aspx like this:

Private Sub Page_Load (sender As Object, e As EventArgs)
Response.Write ("Connected users:" >
End Sub