// @nuget: AngleSharp

​

using System;

using System.Net.Http;

using System.Threading.Tasks;

​

using AngleSharp;

using AngleSharp.Dom;

static class Ext

{

    public static Task<IDocument> ToDocument(this string html)

        => BrowsingContext.New().OpenAsync(x => x.Content(html));

}

​

class Program

{

    private static readonly HttpClient client = new() { BaseAddress = new Uri("http://bocchi-rus.ru/") };

​

    static async Task Main(string[] args)

        => await PrintAsync();

​

    public static async Task PrintAsync()

    {

        foreach (var product in await GetProductsAsync())

        {

            var path = product.QuerySelector("a").GetAttribute("href");

            Console.WriteLine(path);

            foreach (var category in await GetProductCategoriesAsync(path))

            {

                Console.WriteLine($"-- {category.QuerySelector("a").GetAttribute("href")}");

            }

        }

    }

​

    public static async Task<IHtmlCollection<IElement>> GetProductsAsync()

    {

        var html = await client.GetStringAsync("Products");

        var document = await html.ToDocument();

        return document.QuerySelectorAll("section.cd-gallery li.mix");

    }

​

    public static async Task<IHtmlCollection<IElement>> GetProductCategoriesAsync(string path)

    {

        var html = await client.GetStringAsync(path);

        var document = await html.ToDocument();

        return document.QuerySelectorAll("div.pagelink li[id]");

    }

}