Code pages

[J M]

Hi,

I'm working on a program that writes data to a DOS-file (a file that is to
be read by a DOS-program), thus using codepage 437.
When writing to a binary file there was no problem at all, I just used
GetEncoder(437) to write the byte arrays to the file.
But I also have to write to a sequential file. WriteLine doesn't support
byte arrays.
I ended up first encoding the strings to byte arrays, writing them to a
binary file, opening that binary file as a sequential file, reading the byte
arrays as strings again and then writing the records (containing a.o. those
strings) back to the sequential file I finally needed.

I hate this method. It takes way to long (I'm talking about over 20000
records)!

Is there any way that I can convert the unicode strings directly to codepage
437 and writing them to a sequential file????
Thanks in advance...

JF Mous

[Cor Ligthert]

Hi JM,

You code page has nothing to do with this directly.
The 437 is the American/English/Dutch/? page with usable codes in those
countries which does not exist in the standard 7 bits ASCI set in a one byte
character.

I know this gives no direct help, I will check it for you when I have some
more time.

I advise you to have a look at the streamwriter, encoded class.

http://msdn.microsoft.com/library/de...ctortopic7.asp

Cor

[Armin Zingler]

"J M" <[e-mail]> schrieb

Hi,

I'm working on a program that writes data to a DOS-file (a file that
is to be read by a DOS-program), thus using codepage 437.
When writing to a binary file there was no problem at all, I just
used GetEncoder(437) to write the byte arrays to the file.
But I also have to write to a sequential file. WriteLine doesn't
support byte arrays.
I ended up first encoding the strings to byte arrays, writing them to
a binary file, opening that binary file as a sequential file, reading
the byte arrays as strings again and then writing the records
(containing a.o. those strings) back to the sequential file I finally
needed.

I hate this method. It takes way to long (I'm talking about over
20000 records)!

Is there any way that I can convert the unicode strings directly to
codepage 437 and writing them to a sequential file????

Maybe I'm overlooking the problem, but when creating the Streamrwriter, you
can pass the Encoding object that you created before.
--
Armin

How to quote and why:
http://www.plig.net/nnq/nquote.html
http://www.netmeister.org/news/learn2quote.html

[J M]

I've read the MSDN info on streamwriter (I'm not that familiar with it), but
its seems I can't create comma separated files with it...
The code I use now is like:

FileOpen(1, FileName, (...))
WriteLine(1, a string, another string, an integer, a double, a byte, .. etc)

The only streamwriter.writeline that accepts a paramarray wants a
formatstring first.
--
JM

"Armin Zingler" <az*******@freenet.de> schreef in bericht
news:40***********************@news.freenet.de...
<...cut...>

Maybe I'm overlooking the problem, but when creating the Streamrwriter, you can pass the Encoding object that you created before.
--
Armin

[Armin Zingler]

"J M" <[e-mail]> schrieb

I've read the MSDN info on streamwriter (I'm not that familiar with
it), but its seems I can't create comma separated files with it...
The code I use now is like:

FileOpen(1, FileName, (...))
WriteLine(1, a string, another string, an integer, a double, a byte,
.. etc)

The only streamwriter.writeline that accepts a paramarray wants a
formatstring first.

Right, but you can use it to write in the format you need.
sw.writeline ("{0}, {1}, {2}, {3}", a string, another string,....)
--
Armin

How to quote and why:
http://www.plig.net/nnq/nquote.html
http://www.netmeister.org/news/learn2quote.html