<div class="blabla" >
<ul>
<li>1 <a href="blabla1"></li>
<li>2 <a href="blabla2"></li>
<li>3 <a href="blabla3"></li>
</ul>
</div>

HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
doc.LoadHtml(page);
HtmlNodeCollection dataBlock = doc.DocumentNode.SelectNodes(masterNode);
    foreach (HtmlNode item in dataBlock)
     {   
             Debug.WriteLine("itemInnerHtml "+item.InnerHtml);
             Debug.WriteLine("outerHtml " + item.OuterHtml);           
 
     }