HtmlAgilityPack.HtmlWeb hw = new HtmlAgilityPack.HtmlWeb();

            HtmlAgilityPack.HtmlDocument doc = hw.Load("C:\\Users\\u1\\Desktop\\test html.html");

            HtmlAgilityPack.HtmlNode rootNode = doc.DocumentNode;//获取文档的根节点                                                                                       //   //*[@id="report1"]/tbody

            string xpath = "//*[@id='report1']/tbody";

            HtmlAgilityPack.HtmlNode node = rootNode.SelectSingleNode(xpath);//获取表格

            foreach (var script in node.Descendants("script").ToArray())

                script.Remove();

            foreach (var style in node.Descendants("style").ToArray())

                style.Remove();

            string innerText = node.OuterHtml;//到这里就是纯纯的表格了

            var trNodes = node.SelectNodes("tr");

            DataTable dt = new DataTable();

            for (int i = ; i < ; i++)   //给表格增加100个列

            {

                DataColumn dc = new DataColumn();

                dt.Columns.Add(dc);

            }

            foreach (var trnod in trNodes) //遍历行

            {

                //dt.Rows.Add()

                DataRow dr = dt.NewRow();

                var tdNodes = trnod.SelectNodes("td");

                for (int i = ; i < tdNodes.Count; i++) //遍历列

                {

                    dr[i] = tdNodes[i].InnerText;

                }

                dt.Rows.Add(dr);

            }

            // 所有的数据读取到了datatable 中