public bool Next(CancellationToken ct, out IEnumerable <IArticle> result) { result = null; IEnumerable <DCInsideArticle> articles; if (!board.GetArticleList(page, viewRecommend, ct, out articles)) { throw new Exception(); } // 성공했으면 다음에 읽을 page를 하나 올려준다 page++; var resultList = new List <IArticle>(); int minID = int.MaxValue; foreach (var article in articles) { int id = int.Parse(article.ID); if (id < minID) { minID = id; } if (id < lastArticleID) { resultList.Add(article); } } lastArticleID = minID; result = resultList; return(true); }