Re: invalid file name chars (RegEx)

Efran,

Thanks - that was the solution I was looking for.  I often forget about
the '@' character - still holding over from my VB6 days.

Steve and Alan, it is both a learning exercise and a need. :-)

I played with some simpler regexes to get to the point I was at - those
escape chars always seem to get me.

Thank you both for the comments as well.

Peter



-----Original Message-----
From: Discussion relating to the specifics of the C# and Managed C++
languages [mailto:[email protected]] On Behalf Of Efran
Cobisi, cobisi.com
Sent: Monday, June 25, 2007 4:02 PM
To: [email protected]
Subject: Re: [DOTNET-CX] invalid file name chars (RegEx)

Hi Peter,

In your expression, the double backslash actually will be resolved as a
single backslash by the C# compiler and would act as an escape character
for the next one, the forward slash. To overcome this annoiance, you
should either prefix the expression with the @ character or repeat the
double backslash sequence one more time. For the same reason, the input
expression contains a backspace escape sequence (\b) which isn't
contained in your expression: solving this one is pretty easy, just add
the same sequence to the regex expression.

Here's a possible solution to the problem:

Regex regex =3D new Regex (@"[\\/:*?<>|\b]" );

Hope this helps.

--
Efran Cobisi
http://www.cobisi.com

Peter Osucha wrote:
> I'm still playing with regular expressions - though I don't get enough
> time to devote to the subject.
>
>
>
> Anyway, I have a string of characters and all I'm trying to do is make
> replace all the invalid file name chars with "" to I can use the
> replaced name as a filename.  I am trying to do this with a simple
> regular expression statement but this doesn't seem to be working.
>
>
>
>             Regex regex =3D new Regex ("[\\/:*?<>|]" );
>
>             string input =3D "Test:*\\is/?<a\bad?.name";
>
>             Console.WriteLine(regex.Replace(input,""));
>
>
>
> Can someone please tell me what I'm doing wrong here?
>
>
>
> Thanks,
>
> peter

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
This list is hosted by DevelopMentor=AE  http://www.develop.com

View archives and manage your subscription(s) at http://discuss.develop.com