Convert byte array to file

Question

I have a file (D:/d.txt) that I'm converting to a byte array and then encrytping the array with RC4

 string filename="D:/d.txt"
    byte[] buff = null;
    FileStream fs = new FileStream(fileName, 
                                   FileMode.Open, 
                                   FileAccess.Read);
    BinaryReader br = new BinaryReader(fs);
    long numBytes = new FileInfo(fileName).Length;
    buff = br.ReadBytes((int) numBytes);
    return buff;

but now I want to convert the array back to a file how can I do that

You should really have fs in a using block, you are not closing the FileStream you opened to read the file. Also all of your code could be replaced with return File.ReadAllBytes("D:/d.txt"); — Scott Chamberlain
– Scott Chamberlain, Commented Dec 6, 2014 at 17:25

Dgan · Accepted Answer · 2014-12-06 14:04:02Z

1

try this:

  string filename = "D:/d.txt";
    byte[] buff = null;
    FileStream fs = new FileStream(filename, 
                                   FileMode.Open, 
                                   FileAccess.Read);
    BinaryReader br = new BinaryReader(fs);
    long numBytes = new FileInfo(filename).Length;
    buff = br.ReadBytes((int) numBytes);


File.WriteAllBytes("Foo.txt", buff);

//    or

File.WriteAllBytes("Foo.txt", buff.ToArray());

Documentation

System.IO.File.WriteAllBytes - MSDN

answered Dec 6, 2014 at 14:04

Dgan

10.3k1 gold badge33 silver badges51 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Convert byte array to file

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related