Scrape articles and comments

ArticleClasses.cs

using System.Collections.Generic;

namespace wsbcollector.Article
{
    public class MediaEmbed
    {
        public string content { get; set; }
        public int? width { get; set; }
        public bool? scrolling { get; set; }
        public int? height { get; set; }
    }

    public class Oembed
    {
        public string provider_url { get; set; }
        public string description { get; set; }
        public string title { get; set; }
        public int thumbnail_width { get; set; }
        public int height { get; set; }
        public int width { get; set; }
        public string html { get; set; }
        public string version { get; set; }
        public string provider_name { get; set; }
        public string thumbnail_url { get; set; }
        public string type { get; set; }
        public int thumbnail_height { get; set; }
    }

    public class SecureMedia
    {
        public string type { get; set; }
        public Oembed oembed { get; set; }
    }

    public class SecureMediaEmbed
    {
        public string content { get; set; }
        public int? width { get; set; }
        public bool? scrolling { get; set; }
        public int? height { get; set; }
    }

    public class Oembed2
    {
        public string provider_url { get; set; }
        public string description { get; set; }
        public string title { get; set; }
        public int thumbnail_width { get; set; }
        public int height { get; set; }
        public int width { get; set; }
        public string html { get; set; }
        public string version { get; set; }
        public string provider_name { get; set; }
        public string thumbnail_url { get; set; }
        public string type { get; set; }
        public int thumbnail_height { get; set; }
    }

    public class Media
    {
        public string type { get; set; }
        public Oembed2 oembed { get; set; }
    }

    public class Data2
    {
        public bool contest_mode { get; set; }
        public object approved_at_utc { get; set; }
        public object banned_by { get; set; }
        public MediaEmbed media_embed { get; set; }
        public string subreddit { get; set; }
        public string selftext_html { get; set; }
        public string selftext { get; set; }
        public object likes { get; set; }
        public object suggested_sort { get; set; }
        public List<object> user_reports { get; set; }
        public SecureMedia secure_media { get; set; }
        public string link_flair_text { get; set; }
        public string id { get; set; }
        public object banned_at_utc { get; set; }
        public object view_count { get; set; }
        public SecureMediaEmbed secure_media_embed { get; set; }
        public bool clicked { get; set; }
        public object report_reasons { get; set; }
        public string author { get; set; }
        public bool saved { get; set; }
        public List<object> mod_reports { get; set; }
        public bool can_mod_post { get; set; }
        public string name { get; set; }
        public int score { get; set; }
        public object approved_by { get; set; }
        public bool over_18 { get; set; }
        public string domain { get; set; }
        public bool hidden { get; set; }
        public string thumbnail { get; set; }
        public string subreddit_id { get; set; }
        public object edited { get; set; }
        public string link_flair_css_class { get; set; }
        public object author_flair_css_class { get; set; }
        public int gilded { get; set; }
        public int downs { get; set; }
        public bool brand_safe { get; set; }
        public bool archived { get; set; }
        public object removal_reason { get; set; }
        public bool can_gild { get; set; }
        public bool is_self { get; set; }
        public bool hide_score { get; set; }
        public bool spoiler { get; set; }
        public string permalink { get; set; }
        public object num_reports { get; set; }
        public bool locked { get; set; }
        public bool stickied { get; set; }
        public double created { get; set; }
        public string url { get; set; }
        public string author_flair_text { get; set; }
        public bool quarantine { get; set; }
        public string title { get; set; }
        public double created_utc { get; set; }
        public string subreddit_name_prefixed { get; set; }
        public object distinguished { get; set; }
        public Media media { get; set; }
        public int num_comments { get; set; }
        public bool visited { get; set; }
        public string subreddit_type { get; set; }
        public bool is_video { get; set; }
        public int ups { get; set; }
        public bool? author_cakeday { get; set; }
    }

    public class Child
    {
        public string kind { get; set; }
        public Data2 data { get; set; }
    }

    public class Data
    {
        public string modhash { get; set; }
        public List<Child> children { get; set; }
        public string after { get; set; }
        public object before { get; set; }
    }

    public class Articles
    {
        public string kind { get; set; }
        public Data data { get; set; }
    }
}

CommentClasses.cs

using System.Collections.Generic;
using System.Web.Helpers;

namespace wsbcollector.Comment
{
    public class MediaEmbed
    {
    }

    public class SecureMediaEmbed
    {
    }

    public class Data2
    {
        public bool contest_mode { get; set; }
        public object approved_at_utc { get; set; }
        public object banned_by { get; set; }
        public MediaEmbed media_embed { get; set; }
        public string subreddit { get; set; }
        public string selftext_html { get; set; }
        public string selftext { get; set; }
        public object likes { get; set; }
        public object suggested_sort { get; set; }
        public List<object> user_reports { get; set; }
        public object secure_media { get; set; }
        public bool saved { get; set; }
        public string id { get; set; }
        public object banned_at_utc { get; set; }
        public object view_count { get; set; }
        public SecureMediaEmbed secure_media_embed { get; set; }
        public bool clicked { get; set; }
        public object report_reasons { get; set; }
        public string author { get; set; }
        public string link_flair_text { get; set; }
        public bool can_mod_post { get; set; }
        public int score { get; set; }
        public object approved_by { get; set; }
        public bool over_18 { get; set; }
        public string domain { get; set; }
        public bool hidden { get; set; }
        public int num_comments { get; set; }
        public string thumbnail { get; set; }
        public string subreddit_id { get; set; }
        public bool edited { get; set; }
        public string link_flair_css_class { get; set; }
        public object author_flair_css_class { get; set; }
        public int gilded { get; set; }
        public int downs { get; set; }
        public bool brand_safe { get; set; }
        public bool archived { get; set; }
        public object removal_reason { get; set; }
        public bool stickied { get; set; }
        public bool can_gild { get; set; }
        public bool is_self { get; set; }
        public bool hide_score { get; set; }
        public bool spoiler { get; set; }
        public string permalink { get; set; }
        public string subreddit_type { get; set; }
        public bool locked { get; set; }
        public string name { get; set; }
        public double created { get; set; }
        public string url { get; set; }
        public string author_flair_text { get; set; }
        public bool quarantine { get; set; }
        public string title { get; set; }
        public double created_utc { get; set; }
        public string subreddit_name_prefixed { get; set; }
        public int ups { get; set; }
        public object media { get; set; }
        public double upvote_ratio { get; set; }
        public List<object> mod_reports { get; set; }
        public bool visited { get; set; }
        public object num_reports { get; set; }
        public bool is_video { get; set; }
        public object distinguished { get; set; }
        public string link_id { get; set; }
        public object replies { get; set; }
        public string parent_id { get; set; }
        public int? controversiality { get; set; }
        public string body { get; set; }
        public object collapsed_reason { get; set; }
        public string body_html { get; set; }
        public bool? score_hidden { get; set; }
        public bool? collapsed { get; set; }
        public int? depth { get; set; }
    }

    public class Child
    {
        public string kind { get; set; }
        public Data2 data { get; set; }
    }

    public class Data
    {
        public string modhash { get; set; }
        public List<Child> children { get; set; }
        public object after { get; set; }
        public object before { get; set; }
    }

    public class RootObject
    {
        public string kind { get; set; }
        public Data data { get; set; }
    }
}

wsbcollector.cs

using System;
using System.Collections.Generic;
using System.Net;
using System.Text.RegularExpressions;
using System.Threading;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using wsbcollector.Article;
using wsbcollector.Comment;

namespace wsbcollector
{
    //https://www.reddit.com/dev/api
    public class Collector
    {
        string subUrl = "http://www.reddit.com/r/wallstreetbets/.json?raw_json=1&limit=1000";
        readonly string commentUrl = "https://www.reddit.com/r/wallstreetbets/comments/{ArticleId}/.json?raw_json=1&limit=1000";
    
        
        public void Run()
        {
            Dictionary<string,int> mentionCounts = new Dictionary<string, int>();
            using (WebClient wc = new WebClient())
            {
                var json = wc.DownloadString(subUrl);
                Articles sub = JsonConvert.DeserializeObject<Articles>(json);
   
                foreach (var child in sub.data.children)
                {
                    Thread.Sleep(2000);

                    var commentlink = commentUrl.Replace("{ArticleId}", child.data.id);
                    var commentJson = wc.DownloadString(commentlink);

                    JArray a = JArray.Parse(commentJson);

                    foreach (JObject o in a.Children<JObject>())
                    {
                        foreach (JToken result in o["data"]["children"])
                        {
                            Comment.Data2 data = result["data"].ToObject<Comment.Data2>();

                            var commentBody = data.body;
                            var start = commentBody?.IndexOf("$") ?? -1;
                            if (start >= 0)
                            {
                                var spaceIndex = commentBody.IndexOf(" ", start);
                                if (spaceIndex < 0)
                                {
                                    spaceIndex = commentBody.Length;
                                }

                                var symbol = commentBody.Substring(start, spaceIndex - start);

                                if (!mentionCounts.ContainsKey(symbol))
                                {
                                    mentionCounts.Add(symbol,0);
                                }

                                mentionCounts[symbol] += 1;
                            }
                            else
                            {
                                Console.WriteLine("Symbol not found");
                            }
                        }
                    }
                }
            }
            Console.ReadLine();
        }
    }
}