小知识

 --list集合中有一个模型,根据里面某一个字段排序:

list = list.OrderByDescending(m => m.CreateTime).ToList();

 

  --把list集合进行分页:

  int count = list.Count;
  if (pageIndex <= 0 || count < pageSize)
 {
      //不足一页时
     pageList = list.OrderBy(c => c.FileName).Take(pageSize).ToList();
}
 else
  {
     pageList = list.OrderBy(c => c.FileName).Skip(pageSize * (pageIndex - 1)).Take(pageSize).ToList();
  }

 

--会产生随机数0-9999

  Random random =new Random();
  string num = random.Next(0, 10000).ToString();

 

--获取毫秒

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
DateTime d = sdf.Parse(time);

int taskTime = d.Millisecond;//毫秒

 

--JS中对URL进行编码

  var fileName = escape(url) ;