Unable to read data from the transport connection: The connection was closed.

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ASP.NET

I am trying to read data from a website. but after giving some output it gives me error
"Unable to read data from the transport connection: The connection was closed."
the code i have written is this :

private void GetData(string url)
    {
        string readfile = string.Empty;
        lbl.Text = string.Empty;
        HtmlWeb web = new HtmlWeb();
        
        HtmlDocument myNode = web.Load(url); // Error part
        myNode.DocumentNode.Descendants().Where(n => n.Name == "script" && n.Name == "style" && n.Name == "link").ToList().ForEach(n => n.Remove());
        myNode.DocumentNode.Descendants().Where(n => n.Name == "href" && n.Name == "img").ToList().ForEach(n => n.Remove());
        foreach (var elem in elementHtml)
        {
            HtmlNode node = myNode.DocumentNode.SelectSingleNode(".//ul[@class='" + elem + "']");
            if (node != null)
            {
                readfile = node.InnerText.ToString().Trim();
                string[] str = readfile.Split(new string[] { "Add to Cart", "or Add to Wish List", "» Add to Compare" }, StringSplitOptions.RemoveEmptyEntries);
                foreach (string val in str)
                {
                    DataRow dr = ProdList.NewRow();
                    dr["Desc"] = val.ToString().Trim().Replace(" ", "");
                    ProdList.Rows.Add(dr);
                    SaveData();
                    //WriteTxt();
                }
            }
        }
    }

i still looking for the solution ...

pls help..
Thank You