WebAPI+Html跨域时对session的支持

var list = new List<int>();  //　　集合
var totalCount = 17; //　　总数量
var pageSize = 5; //　　每页查询数量

var pageTotal = totalCount % pageSize == 0 
    ? totalCount / pageSize 
    : totalCount / pageSize + 1;
for (var i = 0; i < pageTotal; i++)
{
   var itemList = List.GetRange(pageSize * i, totalCount >= pageSize * (i + 1) 
        ? pageSize 
        : totalCount - pageSize * i);
}    

var group = list.Select((item, index) => new { index = index / pageSize, item})
    .GroupBy(x => x.index).ToList();
for(var item in group)
{
　　var itemList = item.Select(x => x.item).ToList();
}

var pageTotal = Math.Ceiling(totalCount / (float)pageSize);
for (var i = 0; i < pageTotal; i++)
{
　　var itemList = List.Skip(i * pageSize).Take(pageSize).ToList();
}