//查询List是否含有某个值 bool IsContains = Lists.Exists((x)=>x=="B11");
//List重新排序
List<int> arr = new List<int>() { 11, 2, 13, 4, 5, 6, 7 };
//1.
var re =arr.OrderBy(g => g);
//2.
var ree = from g in arr orderby g descending select g;
foreach (var item in re)
{
Console.WriteLine(item);
}
Console.ReadLine();
原文：http://www.cnblogs.com/XuPengLB/p/5669933.html