Asp.net code not working in hosting server

private void CallBatocTransIndia()
        {

            string url = "http://www.xxxx.in/";
            
            Thread thread = new Thread(delegate()
            {
                using (WebBrowser browser = new WebBrowser())
                {
                    browser.ScrollBarsEnabled = false;
                    browser.AllowNavigation = true;
                    browser.Navigate(url);
                    browser.Width = 1024;
                    browser.Height = 768;
                    //browser.Document.GetElementById("txtLrNo").SetAttribute("value", "15470038610");
                    //browser.Document.GetElementById("ImageButton1").InvokeMember("click");
                    browser.ScriptErrorsSuppressed = true;

                    browser.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(DocumentCompleted);
                    browser.ProgressChanged += new WebBrowserProgressChangedEventHandler(ProgressChanged);
                    while (browser.ReadyState != WebBrowserReadyState.Complete)
                    {

                        System.Windows.Forms.Application.DoEvents();

                        //gg.InnerHtml = browser.Document.Body.InnerHtml;
                    }
                }
            });
            thread.SetApartmentState(ApartmentState.STA);
            thread.Start();
            thread.Join();


        }

        long ff = 0;
        private void ProgressChanged(Object sender, WebBrowserProgressChangedEventArgs e)
        {
            try
            {
                Thread.Sleep(3000);
                HtmlDocument doc = ((WebBrowser)sender).Document;
                if (e.MaximumProgress == 10000)
                {
                    ff = e.MaximumProgress;
                }
                if (e.CurrentProgress > e.MaximumProgress)
                {
                    if (e.CurrentProgress == 10000)
                    {
                        //string m1 = doc.Body.OuterHtml;
                        ////string m2 = GG.InnerHtml;
                        ////string m3 = GG.InnerHtml;
                        //int indexF = m1.IndexOf("LDM Details");
                        //int f = (m1.Length - indexF);
                        //string m11 = m1.Remove(indexF, f);
                        //gg.InnerHtml = m1;
                        //string varstr = doc.Body.OuterHtml;
                        //int indexf = varstr.IndexOf("Transit Details");
                        //int indexE = varstr.IndexOf("Top");
                        //gg.InnerHtml = doc.Body.OuterHtml;
                    }

                }
            }
            catch(Exception ex)
            {
                // browser.Navigate(txtUrl.Text.Trim());
                return;
            }
        }


        private void DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
        {
            string Lrno;
           // Response.Write("<script>alert('Hello');</script>");
            Lrno = Request.QueryString["Lrnostr"];
            try
            {
                HtmlDocument doc = ((WebBrowser)sender).Document;
                string g = e.Url.ToString();


                if (g == "http://www.xyz.in/")
                {

                    doc.GetElementById("txtLrNo").SetAttribute("value", "154700" + Lrno);
                    doc.GetElementById("ImageButton1").InvokeMember("click");
                    flag = true;
                    //System.Threading.Thread.Sleep(20000);

                }
                else
                {
                    //Response.Write("<script>alert('Hello In');</script>");

                    string varstr = doc.Body.OuterHtml;
                    int indexf = varstr.IndexOf("Transit Details");
                    int indexE = varstr.IndexOf("Top");

                    string Main = "<table>" + doc.Body.OuterHtml.ToString().Substring(indexf, (indexE - indexf)) + "</table>";
                    //int indexEtr = Main.IndexOf("LDM Details");
                    int indexEtr = Main.IndexOf("</TABLE>");

                    string TrDt = Main.Substring(0, (Main.Length - indexEtr));
                    string LdmDt = Main.Substring(indexEtr, (Main.Length - indexEtr));
                    int indexCashdt = LdmDt.IndexOf("Cash Memo Details");
                    string LdmDt1 = LdmDt.Substring(0, (indexCashdt));

                    BTPLTrans.InnerHtml = Main; // "<table>" + TrDt + "</Table>" + "<table>" + LdmDt1 + "</table>";
                }


            }
            catch
            {
               // browser.Navigate(txtUrl.Text.Trim());
                return;
            }

       
        }