List和HashTable的测试

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Collections;

namespace ListHashTableTest
{
    class Program
    {
        static void Main(string[] args)
        {
            User myUser;
            
            DateTime dt1;
            DateTime dt2;
            dt1 = DateTime.Now;
            List<User> list = new List<User>();
            for (int i = 0; i < 50000;i++ )
            {
                myUser = new User(i.ToString(), i.ToString());

                list.Add(myUser);
            }
            dt2 = DateTime.Now;
            Console.WriteLine("List添加10000项数据用时："+dt2.Subtract(dt1).ToString());
            

            dt1 = DateTime.Now;
            Hashtable ht = new Hashtable();
            for (int i = 0; i < 50000;i++ )
            {
                myUser = new User(i.ToString(), i.ToString());
                ht.Add(i.ToString(), myUser);
            }
            dt2 = DateTime.Now;
            Console.WriteLine("HashTable添加10000项数据用时：" + dt2.Subtract(dt1).ToString());

            
            string strHt=string.Empty;
            string strList = string.Empty;

            dt1 = DateTime.Now;
            foreach (User user in list)
            {
                strList += user.Name;
            }
            dt2 = DateTime.Now;
            Console.WriteLine("List遍历10000项数据用时：" + dt2.Subtract(dt1).ToString());

            dt1 = DateTime.Now;
            foreach (User user in ht.Values)
            {
                strHt += user.Name;
            }
            dt2 = DateTime.Now;
            Console.WriteLine("HashTable遍历100000项数据用时：" + dt2.Subtract(dt1).ToString());

            dt1 = DateTime.Now;

            dt2 = DateTime.Now;
            Console.WriteLine("List查找一项项数据用时：" + dt2.Subtract(dt1).ToString());


            dt1 = DateTime.Now;
            string aaa = ((User)(ht["8907"])).Name;
            dt2 = DateTime.Now;
            Console.WriteLine("HashTable查找一项数据用时：" + dt2.Subtract(dt1).ToString());


            Console.Read();
        }
    }

    class User
    {
        public string Name { get;set;}
        public string Role {get;set;}
        public User(string name,string role)
        {
            Name = name;
            Role = role;
        }
     
    }
}