BinaryReader、BinaryWriter 二进制文件Copy

//建立两个FileStream对象
   FileStream fsOF = new FileStream(OriginFile,FileMode.Open,FileAccess.Read);
   FileStream fsNF = new FileStream(NewFile,FileMode.Create,FileAccess.Write);

   //建立分别建立一个读写类
   BinaryReader br = new BinaryReader(fsOF);
   BinaryWriter bw = new BinaryWriter(fsNF);

   //将读取文件流指针指向流的头部
   br.BaseStream.Seek(0,SeekOrigin.Begin);
   //将写入文件流指针指向流的尾部
   bw.BaseStream.Seek(0,SeekOrigin.End);
 
   while(br.BaseStream.Position < br.BaseStream.Length)
   {
    //从br流中读取一个Byte并马上写入bw流
    bw.Write(br.ReadByte());
   }
 
   br.Close();
   bw.Close();