>How I make to obtain the duration time to Session Variable . Thank'u

Here is what I use. In the Global.asax file, I have something like this in regards to this:

    Sub Application_BeginRequest(ByVal sender As Object, ByVal e As EventArgs)
        LXFramework.oRequest = Request
        LXFramework.oResponse = Response
        LXFramework.oServer = Server
        LXFramework.BeginRequest()
    End Sub
    
    Sub Application_EndRequest(ByVal sender As Object, ByVal e As EventArgs)
        LXFramework.oResponse.Write(LXFramework.GetJavascriptMessage)
        LXFramework.EndRequest()
    End Sub

Those two events will handle this. In my case, for each request, I am calling BeginRequest, which is a method in my framework. This one time stamps the start time. When the request is completed, EndRequest() will be fired and will call the method EndRequest() in my framework which logs the duration.

I think with that you should have a great idea on how to implement this.