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FatTony

•Created by FatTony on 2/4/2024 in #help

✅ Parsing a Link from an HTML file with HTMLAgilityPack

Hi, I'm having a bit of trouble parsing an HTML file to extract a link. I'm using HTMLAgilityPack to do this as it seemed simple enough for what I wanted. In the latest variable I use SelectNodes and provide the XPATH to the link that I found using inspect element. However, the selection returns null and the Console returns an error when writing. Any tips?

using System;
using HtmlAgilityPack;
class Program
{

    static void Main(string[] args)
    {
        // Use HAP to fetch html from web.
        var link = "https://www.abs.gov.au/statistics/labour/employment-and-unemployment/labour-force-australia/dec-2023";
        HtmlWeb web = new HtmlWeb();
        var htmlDoc = web.Load(link);
        var latest = htmlDoc.DocumentNode.SelectNodes("//*[@id=\"block-views-block-topic-releases-listing-topic-latest-release-block\"]/div/div/div/div/a").ToString();
        Console.WriteLine(latest);
    }
}

using System;
using HtmlAgilityPack;
class Program
{

    static void Main(string[] args)
    {
        // Use HAP to fetch html from web.
        var link = "https://www.abs.gov.au/statistics/labour/employment-and-unemployment/labour-force-australia/dec-2023";
        HtmlWeb web = new HtmlWeb();
        var htmlDoc = web.Load(link);
        var latest = htmlDoc.DocumentNode.SelectNodes("//*[@id=\"block-views-block-topic-releases-listing-topic-latest-release-block\"]/div/div/div/div/a").ToString();
        Console.WriteLine(latest);
    }
}

Console Error

Unhandled exception. System.NullReferenceException: Object reference not set to an instance of an object.
   at Program.Main(String[] args) in /home/antonio/interview_macrobond/Program.cs:line 12

Unhandled exception. System.NullReferenceException: Object reference not set to an instance of an object.
   at Program.Main(String[] args) in /home/antonio/interview_macrobond/Program.cs:line 12

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