利用Linq查询List中的数据

//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;
        }
    }
}