摘要: int? page; //指示该值可以为nullint pageIndex = page ?? 1; //当page != null时,pageIndex = page;当page == null时,pageIndex = 1; 阅读全文
posted @ 2011-04-13 14:25 [曾恩] 阅读(270) 评论(0) 推荐(0) 编辑