泛型集合

{
            #region MyRegion
            //定做一个箱子，装入可以装任意多个人
            ArrayList list = new ArrayList();
            Tools frm = new Tools();
            frm.Name = "李小龙";
            Tools frm2 = new Tools();
            frm2.Name = "成龙";
            Tools frm3 = new Tools();
            frm3.Name = "李小乐";
            Tools frm4 = new Tools();
            frm4.Name = "李小乐";
            list.Add(frm);
            list.Add(frm2);
            list.Add(frm3);
            //遍历集合中所有元素
            foreach (Tools tool in list)
            {
                Console.WriteLine(tool.Name);
            }

            list.Remove(frm3);
            //判断龙哥是否在集合中 
            if (list.Contains(frm4)) //存在
            {
                //list.Remove(p4);
                //根据下标来删
                list.RemoveAt(0);
            }
            else
            {
                Console.WriteLine("数据都不存在，如何删除？？？");
            }
            Console.WriteLine("===============删除后=========");
            foreach (Tools tool in list)
            {
                Console.WriteLine(tool.Name);
            }

            list.Insert(0, frm4);
            Console.WriteLine("===============插入后=========");
            foreach (Tools tool in list)
            {
                Console.WriteLine(tool.Name);
            }









            Console.WriteLine("*********************************");
            Hashtable table = new Hashtable();
            Person p1 = new Person();
            p1.Name = "张三";
            Person p2 = new Person();
            p2.Name = "赵四";
            Person p3 = new Person();
            p3.Name = "公里";
            table.Add("001", p1);
            table.Add("002", p2);
            table.Add("003", p3);
            //遍历HashTable三种方案
            /*
             * 无论是java还是C#，引用类型对象都会自动调用它的ToString()
                ToString()命名空间.类名
             */
            //方式一：通过key获取key和value
            foreach (string key in table.Keys)
            {//通过key获取value
                Console.WriteLine("key是{0}\tvalue是{1}", key, ((Person)table[key]).Name);
            }
            Console.WriteLine("**************************************");
            //方式二：只获取value
            foreach (Object value in table.Values)
            {
                Console.WriteLine(((Person)value).Name);
            } 
            #endregion
            ///////////////////////////////////////////////////////////////
            Hashtable table = new Hashtable();
            Person p1 = new Person();
            p1.Name = "张三";
            Person p2 = new Person();
            p2.Name = "赵四";
            Person p3 = new Person();
            p3.Name = "公里";
            table.Add("001", p1);
            table.Add("002", p2);
            table.Add("003", p3);
            //遍历HashTable三种方案
            /*
             * 无论是java还是C#，引用类型对象都会自动调用它的ToString()
                ToString()命名空间.类名
             */
            //方式一：通过key获取key和value
            foreach (string  key  in table .Keys )
            {
                Console.WriteLine("key是{0}\tvalue是{1}",key ,((Person )table [key ]).Name );

            }
            Console.WriteLine("==============================================");
            foreach (Object value in table .Values )
            {
                Console.WriteLine(((Person )value ).Name );
            }
            Console.WriteLine("===========================================");
            //方式三：key和value同时遍历  key+value 
            foreach (DictionaryEntry item in table)
            {
                Console.WriteLine("key是{0}\tvalue是{1}", item.Key, ((Person)item.Value).Name);
            }
            //删除 Remove()
            table.Remove("001");
            //修改 咱们修改“002” key对应value值得name属性为“大美丽”
            //先判断 是否存在某个key
            if (table .ContainsKey("002"))
            {
                Person p = (Person)table["002"];
                p.Name = "大美丽";
            }
            Console.WriteLine("===========修改后==============");
            //方式三：key和value同时遍历  key+value 
            foreach (DictionaryEntry  item in table )
            {
                Console.WriteLine("key是{0}\tvalue是{1}", item.Key, ((Person)item.Value).Name);
            }

            Console.WriteLine("==========删除后==========");
            //方式三：key和value同时遍历  key+value 
            foreach (DictionaryEntry item in table)
            {
                Console.WriteLine("key是{0}\tvalue是{1}", item.Key, ((Person)item.Value).Name);
            }
            Console.ReadLine();
        }

 

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.CodeDom;
using System.Collections;

namespace FrmMain
{
    class Program
    {
        static void Main(string[] args)
        {
            List<Person> list = new List<Person>();
            Person p1 = new Person();
            p1.Name = "小王";
            Person p2 = new Person();
            p2.Name = "张三";
            list.Add(p1);
            list.Add(p2);
            //foreach (Person item in list)
            //{
            //    Console.WriteLine(item.Name);
            //}

            list.Add(new Person() { Name="asdf",Age =12});
            list.Add(new Person() { Name="asdf"});
            list.Add(new Person() { Name="sdafsa"});
            foreach (Person person in list)
            {
                Console.WriteLine(person.Name+ person.Age);
            }



            //Dictionary<string, Person> div = new Dictionary<string, Person>();
            //Person p5 = new Person();
            //p5.Name = "李晓玲";
            //p5.Age = 12;
            //Person p6 = new Person();
            //p6.Name = "李晓玲2";
            //p6.Age = 22;

            //div.Add(p5.Name, p5);
            //div.Add(p6.Name, p6);



           //foreach(string item in div.Keys )
           //{
           //    Console.WriteLine("key{0}\t {0}",item ,div [item].Name );
           //}



            //foreach (Person value in div.Values)
            //{
            //    Console.WriteLine("{0}\t{1}", value.Name, value.Age);
            //}



            //foreach (KeyValuePair<string, Person> item in div)
            //{
            //    Console.WriteLine(item.Key + "\t" + item.Value.Age);
            //}

            //Console.ReadKey();


            //ArrayList list = new ArrayList()
            //{
            //    new Person (){Name ="李小龙",Age=12},
            //     new Person (){Name ="李小龙2",Age=12},
            //      new Person (){Name ="李小龙3",Age=12}
            //};

            //for (int i = 0; i <list.Count ; i++)
            //{
            //    Console.WriteLine(((Person )list [i]).Name);
            //}

            Console.ReadLine();
        }
    }
}