//根据ID删除新闻评论
 public static int news_deletenc(int nc_id)
 {
     return(News_CommentaryDal.news_deletenc(nc_id));
 }
 //添加新闻评论
 public static int news_addnc(News_Commentary nc)
 {
     return(News_CommentaryDal.news_addnc(nc));
 }
 //根据新闻ID查询所有的新闻评论
 public static DataTable news_allnc(int News_ID)
 {
     return(News_CommentaryDal.news_allnc(News_ID));
 }
 //根据新闻ID查询所有的新闻评论数量
 public static int news_allncnum(int News_ID)
 {
     return(News_CommentaryDal.news_allncnum(News_ID));
 }
 //查询所有新闻评论(附加评论所在新闻标题),并根据评论时间排序
 public static DataTable allnc()
 {
     return(News_CommentaryDal.allnc());
 }