Get values of htm tags with HtmlAgilityPack

If you HTML is like you put in your question you can use XPath to retrieve your results in the following way ordered:

With a previous code like this, for example to test with your HTML :

var html = @"<div class='promotion'> 
                     <div class='logo'>
                           <img src='http://www.example.com/D.jpg' **(1)**>         
                     </div>
                     <div class='details'>
                        <p class='date'> 2015/12/12 **(2)** </p>
                        <p> 
                           <img src='http://www.example.com/DDD.jpg' **(3)** alt='' />
                           <h3> Some Details **(4)** </h3>
                        </p> 
                     </div>
                    </div>";

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

1. For the first image for example something like this :

   var value = doc.DocumentNode.SelectSingleNode("//div[@class='logo']/img").Attributes["src"].Value;
   

2. For the second something like this :

   var value = doc.DocumentNode.SelectSingleNode("//p[@class='date']").InnerText;
   

3. For the third :

   var value = doc.DocumentNode.SelectSingleNode("//div[@class='details']/p[2]/img").Attributes["src"].Value;
   

4. And for the four :

   var value = doc.DocumentNode.SelectSingleNode("//div[@class='details']/p[2]/h3").InnerText;
   

I hope this help you.