Parse html table using HtmlAgilityPack (Linq) - linq

Question

Here's the table structure:
<table class="tb-stock tb-option">
<tr>
<th class="bgc2">col1</th>
<th class="bgc2">col2</th>
<th class="bgc2">col3</th>
</tr>
<tr class="alt-row">
<th class="">2018/1/29</th>
<td class="">0.11</td>
<td class=" b-b">0.50</td>
</tr>
<tr class="alt-row">
<th class="">2018/1/30</th>
<td class="">0.22</td>
<td class=" b-b">0.55</td>
</tr>
</table>
I want to get all the elements below "tr" (including "th" and "td")
How can I use linq to achieve this ?
Problems locate at "..tr.Elements("td|th").."
code:
HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
doc.Load(ms, Encoding.UTF8);
List<List<string>> table =
doc.DocumentNode.SelectSingleNode("//table[#class='tb-stock tb-option']")
.Descendants("tr")
.Skip(1)
.Where(tr => tr.Elements("th").Count() >= 1)
.Select(tr => tr.Elements("td|th").Select(td => td.InnerText).ToList())
.ToList();

Answer 1

You can use the following code for extracting inner texts of td or th elements I test it in my local the output is :
2018/1/29
0.11
0.50
2018/1/30
0.22
0.55
You can filter the elements in line :
// both td and th
.Where(node => "td|th".Contains(node.Name))
// only td
.Where(node => "td".Contains(node.Name))
The working code is :
HtmlDocument doc = new HtmlDocument();
doc.Load("test.html", Encoding.UTF8);
List<string> table =
doc.DocumentNode.SelectSingleNode("//table[#class='tb-stock tb-option']")
.Descendants("tr")
.Skip(1)
.Where(tr => tr.Elements("th").Count() >= 1)
.SelectMany(tr => tr.ChildNodes)
.Where(node => "td|th".Contains(node.Name))
.Select(node => node.InnerText)
.ToList();
foreach (var str in table)
{
Console.WriteLine(str);
}