Html Agility Pack loop through table rows and columns

Question

Html Agility Pack loop through table rows and columns

.net c# html-agility-pack

Question

I have a table like this

<table border="0" cellpadding="0" cellspacing="0" id="table2">
    <tr>
        <th>Name
        </th>
        <th>Age
        </th>
    </tr>
        <tr>
        <td>Mario
        </td>
        <th>Age: 78
        </td>
    </tr>
            <tr>
        <td>Jane
        </td>
        <td>Age: 67
        </td>
    </tr>
            <tr>
        <td>James
        </td>
        <th>Age: 92
        </td>
    </tr>
</table>

And want to use HTML Agility Pack to parse it. I have tried this code to no avail:

foreach (HtmlNode row in doc.DocumentNode.SelectNodes("//table[@id='table2']//tr"))
{
    foreach (HtmlNode col in row.SelectNodes("//td"))
    { 
        Response.Write(col.InnerText); 
    }
}

What am I doing wrong?

mpora

Popular Answer

I've run the code and it displays only the Names, which is correct, because the Ages are defined using invalid HTML: <th></td> (probably a typo).

By the way, the code can be simplified to only one loop:

foreach (var cell in doc.DocumentNode.SelectNodes("//table[@id='table2']/tr/td"))
{
    Response.Write(cell.InnerText);
}

Here's the code I used to test: http://pastebin.com/euzhUAAh

Cristian Lupascu

View more on Stack Overflow

Accepted Answer

I had to provide the full xpath. I got the full xpath by using Firebug from a suggestion by @Coda (https://stackoverflow.com/a/3104048/1238850) and I ended up with this code:

foreach (HtmlNode row in doc.DocumentNode.SelectNodes("/html/body/table/tbody/tr/td/table[@id='table2']/tbody/tr"))
{
    HtmlNodeCollection cells = row.SelectNodes("td");
    for (int i = 0; i < cells.Count; ++i)
    {
        if (i == 0)
        { Response.Write("Person Name : " + cells[i].InnerText + "<br>"); }
        else {
            Response.Write("Other attributes are: " + cells[i].InnerText + "<br>"); 
        }
    }
}

I am sure it can be written way better than this but it is working for me now.

Html Agility Pack loop through table rows and columns

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