1,从System.String[]转到List<System.String>

	System.String[] str={"str","string","abc"};

	List<System.String> listS=new List<System.String>(str);

	 

	2, 从List<System.String>转到System.String[]

	List<System.String> listS=new List<System.String>();

	listS.Add("str");

	listS.Add("hello");

	System.String[] str=listS.ToArray();

	 

	测试如下：

	using System;

	using System.Collections.Generic;

	using System.Linq;

	using System.Text;

	namespace ConsoleApplication1

	{

	    class Program

	    {

	        static void Main(string[] args)

	        {

	            System.String[] sA = { "str","string1","sting2","abc"};

	            List<System.String> sL = new List<System.String>();

	            for (System.Int32 i = 0; i < sA.Length;i++ )

	            {

	                Console.WriteLine("sA[{0}]={1}",i,sA[i]);

	            }

	            sL = new List<System.String>(sA);

	            sL.Add("Hello!");

	            foreach(System.String s in sL)

	            {

	                Console.WriteLine(s);

	            }

	            System.String[] nextString = sL.ToArray();

	            Console.WriteLine("The Length of nextString is {0}",nextString.Length);

	            Console.Read();

	        }

	    }

	}

	结果显示：