1.Skip：去除当前页面之前显示个数，再调用Take方法继续分页显示后面的数据
2.Take：分页显示后面的个数
int pageSize = 10;//每个页面显示数据的个数
int page = 1;//当前页码
List<string>
list = new List<string>(){
"A0","A1","A2","A3","A4","A5","A6","A7","A8","A9","B0","B1","B2","B3","B4" };
list.Skip(pageSize * (page - 1)).Take(pageSize);// Skip(每个页面显示个数 * 页数).Take(每个页面显示个数)