public ActionResult MarkDownArticlePublish(ArticleShare model)
        {
            if (model == null) return View("BackGround_Article");
            var article = new ArticleShare
            {
                ArticleName = model.ArticleName ?? "null",
                ArticleDescribe = model.ArticleDescribe ?? "null",
                ArticleInfo = model.ArticleInfo ?? "null",
                ArticlePublishTime = DateTime.Now,
                ArticleImgSrc = "assets/images/LOGO.png"
            };

            _db.ArticleShareModule.Add(article);
            _db.SaveChanges();

            return View("BackGround_Article");
        }
        public ActionResult EditArticle(ArticleShare model)
        {
            //if (!ModelState.IsValid) return View("BackGround_Article");
            var nowEditModel = _db.ArticleShareModule.FirstOrDefault(it => it.id == model.id);
            //if (nowEditModel != null)
            //{
                nowEditModel.ArticleName = model.ArticleName;
                nowEditModel.ArticlePublishTime = DateTime.Now;
                nowEditModel.ArticleDescribe = model.ArticleDescribe;
                nowEditModel.ArticleImgSrc = model.ArticleImgSrc;
                nowEditModel.ArticleInfo = model.ArticleInfo;
            //}
            _db.SaveChanges();

            return View("BackGround_Article");
        }