Xpath how to get 1 first element?

Question

HTML

In the google chrome console
$x("//*[@class='name_class'][1]")
returns all elements with the given class and only the first element is needed.
In the program (c# lib: htmlagilitypack):

if (docURI.DocumentNode.SelectSingleNode("//*[@class='name_class'][1]") != null)
                MessageBox.Show("docURI.DocumentNode.SelectSingleNode("("//*[@class='name_class'][1]")).InnerText;

Answer 1

try like this:

var elems = $x('//*[@class="name_class"]'),
      firstElem;
if(elems.length) {
   firstElem = elems[0];
}
console.log(firstElem);

Answer 2

Parenthesize the locator and take the first one:
$x("(//*[@class='name_class'])[1]")

Answer 3

You can look here:
https://msdn.microsoft.com/ru-ru/library/ms256086.aspx
Good luck!)

Answer 4

Try explicitly specifying the element. For example: "//script[@class='name_class'][1]". Also, using last(), you can take the last element and subtract the number of elements in total (if you know how many of them) or use contains().