使用Linq查询List中数据的代码

 //1，查询出list中所有女生并且年龄小于18，并按降序排列
 //2，查询出list中名字为“王”开头，并且长度为3的学生
 using System;
 using System.Collections.Generic;
 using System.Linq;
 public class StudyLinq
 {
     public static void Main()
     {
         List<People> list = new List<People>();
         list.Add(new People(){Name = "康熙",Age = 18 ,Sex = "男"});
         list.Add(new People(){Name = "雍正",Age = 20 ,Sex = "男"});
         list.Add(new People(){Name = "乾隆",Age = 18 ,Sex = "男"});
         list.Add(new People(){Name = "王羲之",Age = 23 ,Sex = "男"});
         list.Add(new People(){Name = "武则天",Age = 17 ,Sex = "女"});
         list.Add(new People(){Name = "慈禧",Age = 16 ,Sex = "女"});
         var result = list.Where (p=>p.Age<18 && p.Sex =="女").OrderByDescending(p=>p.Age);
             foreach (People a in result)
             {
                 Console.WriteLine(a.Name + "  "+a.Age);
             }
         var result1 = list.Where (p=>p.Name.StartsWith ("王") && p.Name.Length == 3);
             foreach (People b in result1)
             {
                 Console.WriteLine(b.Name);
             }
     }
     public class People
     {
         public string Name
         {
             get;set;
         }
         public int Age
         {
             get;set;
         }
         public string Sex
         {
             get;set;
         }
     }
 }