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c#xpathhtml-agility-packselectsinglenode

htmlagilitypack using SelectSingleNode

I've been trying to get the value of below using HtmlAgilityPack but without success. I'm using SelectSingleNode.

Here is my html.

<html>
<body>
    <table>
        <tr><td>One</td></tr>       
    </table>
</body>
</html>

And below is the codebehind.

HtmlDocument doc = new HtmlDocument();
doc.Load("C:\\test.html");

HtmlNode test = doc.DocumentNode.SelectSingleNode("/html/body/table/tbody/tr/td");
Console.WriteLine(test.InnerHtml);

The test (HtmlNode) variable is null.

How am I going to get the value inside which is One.

Solution

  • As shown your sample does not have tbody node so your XPath would return no nodes (null for SelectSingleNode).

    Fix: 

    HtmlNode test = doc.DocumentNode.SelectSingleNode("/html/body/table/tr/td");

    Debugging tip: build XPath slowly and check each result/child nodes:

         "/html/body/table/" - some children
     "/html/body/table/tbody/"  - null
     "/html/body/table/tr/" - some children
     "/html/body/table/tr/td" - score