473,385 Members | 1,343 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,385 software developers and data experts.

special characters in system filenames

Art
hey, i think this must be really easy:

i want to use strings as filenames that include characters that are
not allowed in windows filenames. is there a special converter method
for this? something like HttpUtility.UrlEncode(...) for Urls.

if not, what characters do i have to replace? is there an encoding
that is valid? i could create a byte[] from the utf8-string and encode
it into a <whatever encoding is valid for windows filenames>-string.

thanks in advance,
art
Jun 27 '08 #1
2 2792
Art wrote:
i want to use strings as filenames that include characters that are
not allowed in windows filenames. is there a special converter method
for this? something like HttpUtility.UrlEncode(...) for Urls.

if not, what characters do i have to replace? is there an encoding
that is valid? i could create a byte[] from the utf8-string and encode
it into a <whatever encoding is valid for windows filenames>-string.
I am not aware of anything particular.

You can make something up.

One suggestion:

public static string SafeName(string fnm)
{
string res = fnm;
MatchCollection reg = Regex.Matches(res, @"[^A-Za-z0-9-_\.]");
for(int i = 0; i < reg.Count; i++) {
res = res.Replace(reg[i].Groups[0].Value, "__" +
((int)reg[i].Groups[0].Value[0]).ToString("X2"));
}
return res;
}

Arne
Jun 27 '08 #2
If the file name doesn't have to be human readable, you can use base64
encoding. It's one line solution, just use Convert.ToBase64String method.

--
Peter Macej
Helixoft - http://www.helixoft.com
VSdocman - Commenter and generator of class documentation for C#, VB
..NET and ASP .NET code
Jun 27 '08 #3

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

7
by: Roy W. Andersen | last post by:
I've been searching google about this for days but can't find anything, so I'm hoping someone here can help me out. I'm trying to create zip-files without needing the zip-file extension in PHP,...
3
by: Barry Olly | last post by:
Hi, I'm working on a mini content management system and need help with dealing with special characters. The input are taken from html form which are then stored into a varchar column in...
11
by: Marian Aldenhövel | last post by:
Hi, I am very new to Python and have run into the following problem. If I do something like dir = os.listdir(somepath) for d in dir: print d The program fails for filenames that contain...
3
by: Scott_Tuttle | last post by:
I'm trying to delete files with strange characters in the names but csharp doesnt seem to be able to see them at all. Solution??
5
by: Sakharam Phapale | last post by:
Hi All, I am using an API function, which takes file path as an input. When file path contains special characters (@,#,$,%,&,^, etc), API function gives an error as "Unable to open input file"....
0
by: news.online.de | last post by:
Hello everybody, probably it's a FAQ but I didn't find anything so far concerning my problem, so I am asking here :-) I am facing the following problem: - I have developed a webservice client...
16
by: Hugh Janus | last post by:
Hi all, I posted a couple of weeks ago with what I thought was a problem with the file system reading accented characters however, after debugging line by line I have now found the true problem....
7
by: Trac Bannon | last post by:
When I load XML from a file into a dotNet XMLDataDocument, the UTF-8 codes are resolved but the 5 special XML entities are not. How can I force those 5 special character types to be translated?
1
by: inhahe | last post by:
How would I import a python file whose name contains characters like .'s or !'s? Is there really _no_ way to do that? I have to use plain jane letters and numbers for everything?
0
by: Faith0G | last post by:
I am starting a new it consulting business and it's been a while since I setup a new website. Is wordpress still the best web based software for hosting a 5 page website? The webpages will be...
0
by: taylorcarr | last post by:
A Canon printer is a smart device known for being advanced, efficient, and reliable. It is designed for home, office, and hybrid workspace use and can also be used for a variety of purposes. However,...
0
by: Charles Arthur | last post by:
How do i turn on java script on a villaon, callus and itel keypad mobile phone
0
by: ryjfgjl | last post by:
In our work, we often receive Excel tables with data in the same format. If we want to analyze these data, it can be difficult to analyze them because the data is spread across multiple Excel files...
0
by: emmanuelkatto | last post by:
Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel
0
BarryA
by: BarryA | last post by:
What are the essential steps and strategies outlined in the Data Structures and Algorithms (DSA) roadmap for aspiring data scientists? How can individuals effectively utilize this roadmap to progress...
1
by: nemocccc | last post by:
hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?
1
by: Sonnysonu | last post by:
This is the data of csv file 1 2 3 1 2 3 1 2 3 1 2 3 2 3 2 3 3 the lengths should be different i have to store the data by column-wise with in the specific length. suppose the i have to...
0
by: Hystou | last post by:
There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.