Hỗ trợ Request pagesource trang web lazada bằng C#

[Đoàn Minh Tâm 13]

Chào mọi người.

Mọi người ai biết Request pagesource html trang Lazada hàng loạt mà không bị check point. Vui lòng hướng dẫn giúp mình.

Mình dùng Webclient để request sync page.

Code demo:

string url = "https://www.lazada.vn/products/dien-thoai-samsung-galaxy-s20-plus-128gb8gb-hang-chinh-hang-moi-100-nguyen-seal-bao-hanh-12-thang-i498830724-s974814141.html?spm=a2o4n.searchlist.list.8.706b3a0fcsJ4Oe&search=1";

                Uri address = new Uri(url);

                WebClient webClient = new WebClient();
                webClient.Headers[HttpRequestHeader.ContentType] = "application/x-www-form-urlencoded";

                //< get Website >
                //*here: download as string
                webClient.DownloadStringCompleted += WebClient_DownloadStringCompleted;
                webClient.DownloadStringAsync(address);


private void WebClient_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
        {
            //-------------------< WebClient_DownloadStringCompleted() >-------------------
            //< check >
            if (e.Error != null)
            {
                var output = e.Error.Message;
            }
            //</ check >
            else if (e.Result != null)
            {
                richTextBox1.Invoke(new MethodInvoker(delegate () {
                    richTextBox1.Text = e.Result;
                }));
                //var document = new HtmlDocument();
                //document.LoadHtml(e.Result);

                //var node = document.DocumentNode.SelectSingleNode("//span[@id=\"result_box\"]");
                //var output = node != null ? node.InnerText : e.Error.Message;

            }
            //-------------------</ WebClient_DownloadStringCompleted() >-------------------
        }