How to append two binary files

[jaleel]

Hi

I have got two binary files.(extension is .atf (some IBM stuff)). Dont know the exact details.I think the files are something like PDF files.i just want to append two files.

I am thinking of doing like:

1. Convert file1.atf to byte array

2. Convert file2.atf to byte array

3. Combine two

Is this possibile? Also can I convert the new byte array back to ATF format?



Guys any hint or clue....?



Thanks in advance,

jaleel

[Shashi Sadasivan]

If its bits and bytes then it dosent matter about the extension.

So after making changes you can give it the extension name and it will work fine.

try reading one file into bytes and storing it to a new file. should work without problems

However while merging, you would have to take a look at the format of that atf extension.

you might need to do some changes.
if it was a text file, you could have got away from it, but if it is filled with presentational information, you will need to merge it accordingly.

cheers

Found a link which explains the atf format structure.

good luck

[jaleel]

Actually I a m creating .atf file from a word file using an atf print driver. Then I want combine two atf files into one.

From another forum I got a code block like this

using(BinaryWriter writer = new BinaryWriter(File.OpenForWriting(<path>))
{
 
   //Skip to end
 
   writer.Seek(0, SeekOrigin.End);
 
 
 
   using(BinaryReader reader = new BinaryReader(File.OpenForReading(<path>))
   {
 
      byte[] buffer = new byte[1024];
 
      while(reader.Position < reader.Length)
 
      {
 
         int count = reader.Read(buffer, 0, buffer.Length);
         writer.Write(buffer, 0, count);
 
      };
 
   };
};
 
 
 
 
 
 

But here I dont know how to get reader.Position and reader.Length. I am in search of it.There are no properties like that..cud u pls help me...?

[jaleel]

Hi ,

Now I am able to append two .afp files using FileStream itself.Actually when I went thru a document pointed by Shashi , I found .afp is a text file format.
So I just tried using FileStream class. Now it works like charm. Thank u Shashi.....:)
The code is like this

 
 
            Using fs As New FileStream(sourceFile, FileMode.Append, FileAccess.Write)
 
                Dim buffer() As Byte = File.ReadAllBytes(appendFile)
 
                fs.Write(buffer, 0, buffer.Length)
 
            End Using
 

Thanks again to Shashi