selecting divs fails - asp.net-mvc-4

Question

I am trying to parse the information inside the div class="base shortstory:
<div id="dle-content">
<div class="base shortstory">
<h3 class="btl">HTC Jetstream</h3>
</div>
<div class="base shortstory">
<h3 class="btl">Samsung S4</h3>
</div>
<div class="base shortstory">
<h3 class="btl">Dell Streak</h3>
</div>
</div>
Here is the code
const string url = "http://someurl.com/catalogue";
const string rootUrl = "http://someurl.com";
HtmlWeb hw = new HtmlWeb();
HtmlDocument doc = hw.Load(url);
int dealsCount = 0;
HtmlNode root = doc.DocumentNode.SelectSingleNode("//div[#id='dle-content']");
int i = 1;
//this is for the default page
while (i<=10)
{
try
{
string node= String.Format("//div[{0}]", i);
var link =
doc.DocumentNode.SelectSingleNode(node);
var href = link.SelectSingleNode("//div[#class='mlink']//span[#class='argmore']//a[#href]").Attributes["href"].Value;
string title = link.SelectSingleNode("//h3[#class='btl']//a[#href]").InnerText.Trim();
string description = link.SelectSingleNode("//div[#class='maincont']//div[1]").InnerText.Replace("\n", " ").Replace("\r", "").Replace("\t", "").Trim();
description = RemoveHTMLComments(description);
var imageURL = link.SelectSingleNode("//div[#class='maincont']//div[1]//a//img").Attributes["src"].Value;
var price = link.SelectSingleNode("//div[#class='mlink']//span[3]//font").InnerText.Trim();
price = Regex.Match(price, #"\d+").Value;
var partnerdealID = href;
//no information
var isActivesStr = link.SelectSingleNode("//div[#class='mlink']//span[2]/font").InnerText.Trim();
bool isActive;
if (isActivesStr.Contains("Нет в наличии"))
{
isActive = false;
}
else
{
isActive = true;
}
var dealUrl = href; //requires login - show the page itself
}
catch (Exception)
{
}
i += 1;
}
But after looping still the selected node is first one. What am I doing wrong?

Answer 1

All your XPATH expressions start with '//' which means "start from root of the document and search recursively". So when you do this:
link.SelectSingleNode("//div[#class='mlink']//span[#class='argmore']//a[#href]")
You will start not from link, but from the document's root. You probably want to do this instead:
link.SelectSingleNode("div[#class='mlink']...etc...")
which is equivalent to
link.SelectSingleNode("./div[#class='mlink']...etc...")
'.' means the current node. '/' means search only the direct children, not recursively.