C# 文件和字节流的转换

1、读取文件，并转换为字节流 FileStream fs = new FileStream(filename,FileMode.Open, FileAccess.Read); 
byte[] infbytes = new byte[(int)fs.Length]; 
fs.Read(infbytes, 0, infbytes.Length); 
fs.Close(); 
return infbytes;

2、 将字节流写入文件  FileStream fs = new FileStream("D:\inf.dlv",FileMode.Create, FileAccess.Write); 
fs.Write(infbytes, 0, inf.Length); 
fs.Close();