How to Find Control in Edit Item Template

Selecting attribute values with html Agility Pack

Html Agility Pack does not support attribute selection.

Selecting attribute value using XPath and HtmlAgilityPack

There is a way using HtmlNodeNavigator :

public static string TextfromOneNode(HtmlNode node, string xmlPath)
{
    string toReturn = "";
    var navigator = (HtmlAgilityPack.HtmlNodeNavigator)node.CreateNavigator();
    var result = navigator.SelectSingleNode(xmlPath);
    if(result != null)
    {
        toReturn = result.Value;
    }
    return toReturn;
}

The following console app example demonstrates how HtmlNodeNavigator.SelectSingleNode() works with both XPath that return element and XPath that return attribute :

var raw = @"<div>
<meta name='pubdate' content='2012-08-30' />
<span>foo</span>
</div>";
var doc = new HtmlAgilityPack.HtmlDocument(); 
doc.LoadHtml(raw);

var navigator = (HtmlAgilityPack.HtmlNodeNavigator)doc.CreateNavigator();

var xpath1 = "//meta[@name='pubdate']/@content";
var xpath2 = "//span";

var result = navigator.SelectSingleNode(xpath1);
Console.WriteLine(result.Value);
result = navigator.SelectSingleNode(xpath2);
Console.WriteLine(result.Value);

dotnetfiddle demo

output :

2012-08-30
foo

Get value of an attribute by HtmlAgilityPack

You can use XPath to query the document nodes to find the nodes you are looking for:

static void Main(string[] args)
{
    var html = @"<div class=""vcard - names - container py - 3 js - sticky js - user - profile - sticky - fields "" style=""position: static; "">
           < h1 class=""vcard-names"">
            <span class=""vcard-fullname d-block"" itemprop=""name"">Name 001</span>
            <span class=""vcard-username d-block"" itemprop=""additionalName"">Name 002</span>
          </h1>
        </div>";

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

    var names = doc.DocumentNode.SelectNodes("//span").Select(x => x.InnerText);
    foreach (var name in names)
    {
        Console.WriteLine(name);
    }
    Console.ReadLine();
}

Select elements with attribute data-url using HTMLAgilityPack

The following should do what you want:

foreach (HtmlNode divNode in htmlDocument.DocumentNode.SelectNodes("//div[@data-url]"))
{
    HtmlAttribute attribute = divNode.Attributes["data-url"];
    links.Add(attribute.Value);
}

Effectively, the statement //div[@data-url] should select all nodes with a data-url attribute. We then pull out this attribute.

If there are nodes other than divs with this attribute, then //*[@data-url] should do the trick.

find all elements with data - attribute using html-agility-pack

// the html block of text to parse
var a = @"<p> sample text <a href="""" data-glossaryid=""F776EB48BD""></a>
<p><img  alt=""my pic"" src=""/~/media/Images/mypic.jpg"" /></p>
sample text <a  href="""" data-glossaryid=""5D476EB49E""></a>
<p>  more sample text  </p>
<span data-glossaryid=""F776EB49EF""> </span>";

// create an HtmlDocument
var htmlDocument = new HtmlDocument();
htmlDocument.LoadHtml(a);

// get all elements with the attr data-glossaryid and prints its values
foreach (var item in htmlDocument.DocumentNode.SelectNodes("//*[@data-glossaryid]"))
    Console.WriteLine(item.GetAttributeValue("data-glossaryid", ""));

HtmlAgilityPack - Select td Attribute from Table

Try using:

   var div = documentx.DocumentNode.SelectNodes("//*//table[3]//tr");

instead of:

    var div = documentx.DocumentNode.SelectNodes("//*//table[2]//tr");

and use it like this:

var author = item.ChildNodes[0].InnerText;
var series = item.ChildNodes[1].InnerText;
var title = item.ChildNodes[2].InnerText;

Html Agility Pack - – Extract Node with “empty” class Attribute OR Select a PAIR of nodes (one and its immediate following node)

TBH, I am not quite understand your question clearly but here is my attempt to answer it.

A bit of code to get “one node by class AND its first following node”,
I haven’t used XPathes (or w/e it’s called) yet so I’m not used to -

public static bool HasClass(this HtmlNode node, params string[] classValueArray)
{
    var classValue = node.GetAttributeValue("class", "");
    var classValues = classValue.Split(' ');
    return classValueArray.All(c => classValues.Contains(c));
}
doc.DocumentNode.Descendants("li").FirstOrDefault(_ => _.HasClass("classname")).NextSibling;

If it’s possible, a way to get a “node which has the class Attribute
but NO VALUE”

doc.DocumentNode.Descendants("li").Where(_ => string.IsNullOrEmpty(_.GetAttributeValue("class", "")))

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