集合杂记

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

namespace ConsoleApplication8
{
    class Program
    {
        static void Main(string[] args)
        {

            List<A> test = new List<A>();//集合内对象类型须一致
            ArrayList testArrayList = new ArrayList();//集合内对象类型可以多样
            
            Dictionary<string,int> testDictionary = new Dictionary<string, int>();
            testDictionary.Add( "k12",12);
            testDictionary.Add( "k13",13);
            testDictionary.Add( "k123",17);
            int x = testDictionary["k12"];
        }
    }
    
    class A
    {
    }
}