采集 网页中列表内容，带滚动条

网址：https://mall.datayes.com/datapreview/549?lang=zh
请问怎么采集网页中全部列表内容，网页列表有滚动条。
需要直接采集网页内容，而不是下载文件，最好给出代码

 https://gw.wmcloud.com/datamkt/whitelist/datapreview/549?lang=zh

https://gw.wmcloud.com/datamkt/whitelist/datapreview/549?lang=zh 同意楼上

//json对应的类模型，你要其他数据自己建立类模型
    public class StockInfo { public System.Collections.Generic.List<System.Collections.Generic.List<string>> previewData;}
    public class StockData { public StockInfo data;}
    protected void Page_Load(object sender, EventArgs e)
    {
        Response.Charset = "utf-8";
        Response.ContentEncoding = Encoding.UTF8;
        WebClient wc = new WebClient();
        byte[] data = wc.DownloadData("https://gw.wmcloud.com/datamkt/whitelist/datapreview/549?lang=zh");
        wc.Dispose();
        MemoryStream ms = new MemoryStream(data);
        StreamReader sr = new StreamReader(ms, Encoding.UTF8);
        string s = sr.ReadToEnd();
        ms.Close(); sr.Close();

        StockData stockdata = Newtonsoft.Json.JsonConvert.DeserializeObject<StockData>(s);//序列化为类实例
        System.Collections.Generic.List<System.Collections.Generic.List<string>> stocklist = stockdata.data.previewData;
        foreach (System.Collections.Generic.List<string> list in stocklist)
            Response.Write(String.Join("　", list.ToArray()) + "<BR>");
    }