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How to get the number of tables in html file using c # and html-agility-pack

This is a newbie question, so please provide working code.

How to count tables in html file using C # and html-agility-pack?

(I will need to get values ​​from specific tables in an html file based on the number of tables. Then I will choose some math on the values ​​obtained.)

Here is a sample file with three tables for your convenience:

<html>
<head>
<title>Tables</title>
</head>
<body>
<table border="1">
  <tr>
    <th>Name</th>
    <th>Phone</th>
    <th>City</th>
    <th>Number</th>
  </tr>
  <tr>
    <td>Scott</td>
    <td>555-2345</td>
    <td>Chicago</td>
    <td>42</td>
  </tr>
  <tr>
    <td>Bill</td>
    <td>555-1243</td>
    <td>Detroit</td>
    <td>23</td>
  </tr>
  <tr>
    <td>Ted</td>
    <td>555-3567</td>
    <td>Columbus</td>
    <td>9</td>
  </tr>
</table>
<p></p>
<table border="1">
  <tr>
    <th>Name</th>
    <th>Year</th>
  </tr>
  <tr>
    <td>Abraham</td>
    <td>1865</td>
  </tr>
  <tr>
    <td>Martin</td>
    <td>1968</td>
  </tr>
  <tr>
    <td>John</td>
    <td>1963</td>
  </tr>
</table>
<p></p>
<table border="1">
  <tr>
    <th>Animal</th>
    <th>Location</th>
    <th>Number</th>
  </tr>
  <tr>
    <td>Tiger</td>
    <td>Jungle</td>
    <td>8</td>
  </tr>
  <tr>
    <td>Hippo</td>
    <td>River</td>
    <td>4</td>
  </tr>
  <tr>
    <td>Camel</td>
    <td>Desert</td>
    <td>3</td>
  </tr>
</table>
</body>
</html>

If you would like, please SHOW how to send the results to a new text file.

Thank!

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2 answers


Something like that:



HtmlDocument doc = new HtmlDocument();
doc.Load(myTestFile);

// get all TABLE elements recursively
int count = doc.DocumentNode.SelectNodes("//table").Count;

// output to a text file
File.WriteAllText("output.txt", count.ToString());
+1


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I think this might be the starting point



var doc = new HtmlAgilityPack.HtmlDocument();
doc.LoadHtml(html);

var tables = doc.DocumentNode.Descendants("table");
int tablesCount = tables.Count();

foreach (var table in tables)
{
    var rows = table.Descendants("tr")
                    .Select(tr => tr.Descendants("td").Select(td => td.InnerText).ToList())
                    .ToList();

    foreach(var row in rows)
        Console.WriteLine(String.Join(",", row));
}
+2


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