using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

//泛型解决原来集合类中元素的装箱和拆箱问题namespace _012{    class Program    {        static void Main(string[] args)        {            #region 泛型集合            List
    
      list = new List
     
      ();//创建泛型集合对象            list.Add(1);//向泛型集合内添加数据            list.Add(2);            list.Add(3);            for (int i = 0; i < list.Count; i++)            {                Console.WriteLine(list[i]);            }            Console.WriteLine('\n');            list.AddRange(list);//添加自己、AddRange是添加集合的            for (int i = 0; i < list.Count; i++)            {                Console.WriteLine(list[i]);            }            int[] chint = list.ToArray();//将泛型转成数组            List
      
        int1 = chint.ToList();//将数组类型转成泛型            #endregion            #region 泛型函数            Console.WriteLine('\n');            int[] arr = { 1, 2, 3 };            List
       
         lt = new List
        
         ();            for (int i = 4; i < 7; i++)            {                lt.Add(i);            }            bb
         
          (arr); bb
          
           (lt); #endregion Console.ReadKey(); } public static void bb
           
            (IList
            
              jh) { foreach (T n in jh) { Console.WriteLine(n); } } }}