Blacker.Scraper.EatManga.GetPages C# (CSharp) Метод

        private IDictionary<int, string> GetPages(IChapterRecord chapter)
        {
            IDictionary<int, string> pages = new Dictionary<int, string>();

            var document = WebHelper.GetHtmlDocument(chapter.Url);
            var chapterPages = document.SelectNodes(@"(//select[@id=""pages""])[1]/option");
            if (chapterPages == null)
            {
                throw new ParserException("Could not find expected elements on website.", document.InnerHtml);
            }

            foreach (var pageLink in chapterPages)
            {
                int pageNumber = 0;

                Int32.TryParse(pageLink.InnerText, out pageNumber);

                if (pages.ContainsKey(pageNumber))  // if page is already in dictionary use random number instead
                    pageNumber = Random;

                pages.Add(pageNumber, GetFullUrl(pageLink.Attributes["value"].Value));
            }

            return pages;
        }