CODEWITHSUNDEEP
c#.netxpathhtml-agility-pack
user1765862
user1765862

Reputation: 14155

traversing xpath further from selected node

I have following html structure

<div class="ac_x">
    <h3>
        <a href="">Title</a>                
    </h3>
    <a class="">
        <img title="" />
    </a>
    <dl>
        <dt class="">Person</dt>
        <dd class="">
        <dt class="ac_i_ard">Address</dt>
        <dd class="ac_i_ard">
            <a href="">Target text</a>
        </dd>
    </dl>
</div>

I'm selecting Title using 

 var nodes = htmlDoc.DocumentNode.SelectNodes(@"//div[@class='ac_x']/h3/a")
                         .Cast<HtmlAgilityPack.HtmlNode>().
                         .Select ....

Now I want to programmatically select next Target text under <dd class="ac_i_ard">

I tried with 

node[0].SelectSingleNode(@"../dl/dd[2]/a");

but obviously I'm not selecting node 

Object reference not set to an instance of an object.

how to select node (Target text) programatically from already selected node ?

Upvotes: 0

Views: 80

Answers (3)

har07
har07

Reputation: 89295

Another problem is the first <dd> tag is not closed. Therefore all of the following sibling are interpreted as child by HtmlAgilityPack. That's why the following works :

var n = node.SelectSingleNode(@"../following-sibling::dl/dd/dd[@class='ac_i_ard']/a");

or a bit simpler way :

var n = node.SelectSingleNode(@"../following-sibling::dl//dd[@class='ac_i_ard']/a");

[.NET Fiddle demo]

Upvotes: 1

Alex Art.
Alex Art.

Reputation: 8781

var rootNodes = htmlDoc.DocumentNode.SelectNodes(@"//div[@class='ac_x']")
foreach(var n in rootNodes)
{
     var titleNode = n.SelectSingleNode(@"h3/a");
     var ddNodes = n.SelectNodes(@"dl/dd[@class='ac_i_ard']]/a");
}

Upvotes: 1

Joel M. Lamsen
Joel M. Lamsen

Reputation: 7173

you could use

../../dl/dd[@class='ac_i_ard']/a

or

../following-sibling::dl/dd[@class='ac_i_ard']/a

Upvotes: 1

Related Questions