将Stream转换成String，将String转化成Stream

 1 using  System; 
 2 using  System.IO; 
 3 using  System.Text; 
 4 namespace  CSharpConvertString2Stream 
 5 {     
 6  class  Program     
 7  {                
 8        static  void  Main(  string [] args ) 
 9         {             
10             string  str  =  " Testing 1-2-3 " ;              // convert string 2 stream             
11             byte [] array  =  Encoding.ASCII.GetBytes(str);             
12             MemoryStream stream  =  new  MemoryStream(array);              // convert stream 2 string       
13             StreamReader reader  =  new  StreamReader(stream); 
14             string  text  =  reader.ReadToEnd(); 
15             Console.WriteLine(text) ;  
16             Console.ReadLine();  
17        }   
18   } 
19 }