how to circulate the running of the codes after opening the page once and closing it soon? I have tried the following code, but it didn't take effect.

protected void Page_Load(object sender, EventArgs e)
    {
        int myNumber = Convert.ToInt32(Application["appOne"].ToString());
        myNumber++;
        Application["appOne"] = myNumber.ToString();
        Response.Write(myNumber.ToString());           
        System.Threading.Thread.Sleep(5000);
        HttpWebRequest myReq = (HttpWebRequest)WebRequest.Create(Request.Url.AbsoluteUri);
        myReq.Timeout = 1000;
        try
        {
            myReq.GetResponse() ...