private async Task <string> GetArticleContent() { string url = $"https://www.bilibili.com/read/app/{ArticleId}"; string text = await AppTool.GetHtmlFromWeb(url); if (!string.IsNullOrEmpty(text)) { var doc = new HtmlDocument(); doc.LoadHtml(text); var node = doc.DocumentNode.SelectNodes("//div[contains(@class, 'article-holder')]").FirstOrDefault(); if (node != null) { return(node.InnerHtml); } } return(""); }