使用HtmlAgilityPack将HtmlTable填入DataTable

　　　　　　　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 = 0; i < 100; 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 = 0; 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