thanks for your reply Could you tell me how can I add the breakpoint in doc?

I have just practise to grab some data from a web page.
Of course, I am new in c#.
I am using regex but it does not word. and return null.

using HtmlAgilityPack;

namespace ConsoleApp1
{


    class Program
    {
        static void Main(string\[\] args)
        {
            HtmlWeb web = new HtmlWeb();
            HtmlDocument doc = web.Load("https://www.videoblocks.com/video/after-effects-cs5-template-bracket-titles-65zdx8e");

            var title = doc.DocumentNode.SelectNodes(xpath: "//ul\[@class='stockItemInfo-stockSpec'\]").FirstOrDefault().InnerText.Split(':').FirstOrDefault();
            var secp = doc.DocumentNode.SelectNodes("//ul\[@class='stockItemInfo-stockSpec'\]//li//span").FirstOrDefault().InnerText;


            Console.Write(title+":"+secp);
                Console.ReadKey();
        }
    }
}