zoukankan      html  css  js  c++  java
  • List分组后存入Dictionary

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;
    
    namespace lambdaTest
    {
        class Program
        {
            static void Main(string[] args)
            {
                List<user> userset = new List<user>();
                for (int i = 0; i < 10; i++)
                {
                    user u = new user();
                    u.name = i.ToString() + "的名字";
                    u.age = i;
                    u.sex = (i % 2 == 0) ? "男" : "女";
                    userset.Add(u);
                }
                var query = userset.GroupBy(m => m.sex).ToList().ToDictionary(n=>n.Key);
                Dictionary<string, IGrouping<string, user>> d = new Dictionary<string, IGrouping<string, user>>();
                foreach (var item in query)
                {
                    d.Add(item.Key,item.Value);
                }
                foreach (var item in d)
                {
                    foreach (var i in item.Value)
                    {
                        Console.WriteLine(item.Key + " "+i.name);
                    }
                }
               
                Console.ReadKey();
            }
        }
        public class user
        {
            public string name;
            public string sex;
            public int age;
        }
    }
    

      结果:

  • 相关阅读:
    Brupsuite 中插件CO2的使用
    记事本默认编码改为UTF-8
    Crackme031
    Crackme030
    Crackme029
    Crackme028
    Crackme026
    Crackme025
    Crackme024
    Crackme022
  • 原文地址:https://www.cnblogs.com/yuanfy/p/6689477.html
Copyright © 2011-2022 走看看