C# 将字符串转化成流，将流转换成字符串

using System;
using System.IO;
using System.Text;
namespace CSharpConvertString2Stream
{
 class Program
 {
       static void Main( string[] args )
        {
            string str = "Testing 1-2-3";             //convert string 2 stream
            byte[] array = Encoding.ASCII.GetBytes(str);
            MemoryStream stream = new MemoryStream(array);             //convert stream 2 string
            StreamReader reader = new StreamReader(stream);
            string text = reader.ReadToEnd();
            Console.WriteLine(text);
            Console.ReadLine();
       }
  }
}