howto use c# regular expression validator to exclude file types

[Brian Vallelunga]

I'm not great at regular expressions, but something like this should work:

(.*\.jpg)|(.*\.jpeg)|(.*\.png)|(.*\.gif)

That should do the trick. If you just want jpg files, try:
(.*\.jpg)|(.*\.jpeg)

Each section within ( ) means, any number of characters, followed by a . and
then the extension.

Brian


"Arjen" <boah123@hotmail.com> wrote in message
news:bgbf5g$8o1$1@news4.tilbu1.nb.home.nl...

> Hello,
>
> Can you use the ASP.NET C# Regular Expression Validator to make sure
> that a user can only upload filenames with extension *.jpg?
>
> If so, how?
> Because I don't know how the expression should look like.
>
> Greetings en thanx in advance!
>
>

[Arjen]

Hmm, the extension is now case sensitive.
Which means that JPG is not working.

I can do this:
(.*\.jpg)|(.*\.JPG)

But is there also a way to check the upper-case on the same moment... I mean
is there a special character for that?

Thanks!



"Brian Vallelunga" <bgvallelunga@starpower.net> schreef in bericht
news:eLuKYN6VDHA.2100@TK2MSFTNGP11.phx.gbl...

> I'm not great at regular expressions, but something like this should work:
>
> (.*\.jpg)|(.*\.jpeg)|(.*\.png)|(.*\.gif)
>
> That should do the trick. If you just want jpg files, try:
> (.*\.jpg)|(.*\.jpeg)
>
> Each section within ( ) means, any number of characters, followed by a .

and

> then the extension.
>
> Brian
>
>
> "Arjen" <boah123@hotmail.com> wrote in message
> news:bgbf5g$8o1$1@news4.tilbu1.nb.home.nl...

> > Hello,
> >
> > Can you use the ASP.NET C# Regular Expression Validator to make sure
> > that a user can only upload filenames with extension *.jpg?
> >
> > If so, how?
> > Because I don't know how the expression should look like.
> >
> > Greetings en thanx in advance!
> >
> >

>
>

[Brian Vallelunga]

Hmm... theoretically there is, but I can't get it to work. Read here (if you
have msdn installed):

help://MS.VSCC.2003/MS.MSDNQTR.2003FEB.1033/cpgenref/html/cpconregularexpres
sionoptions.htm

It talks about putting in an option inline, but it wouldn't work for me.
Also, you should probably change all of those "*" to "+" in my previous
example.

Brian


"Arjen" <boah123@hotmail.com> wrote in message
news:bgc2i8$d8l$1@news2.tilbu1.nb.home.nl...

> Hmm, the extension is now case sensitive.
> Which means that JPG is not working.
>
> I can do this:
> (.*\.jpg)|(.*\.JPG)
>
> But is there also a way to check the upper-case on the same moment... I

mean

> is there a special character for that?
>
> Thanks!
>
>
>
> "Brian Vallelunga" <bgvallelunga@starpower.net> schreef in bericht
> news:eLuKYN6VDHA.2100@TK2MSFTNGP11.phx.gbl...

> > I'm not great at regular expressions, but something like this should

work:

> >
> > (.*\.jpg)|(.*\.jpeg)|(.*\.png)|(.*\.gif)
> >
> > That should do the trick. If you just want jpg files, try:
> > (.*\.jpg)|(.*\.jpeg)
> >
> > Each section within ( ) means, any number of characters, followed by a .

> and

> > then the extension.
> >
> > Brian
> >
> >
> > "Arjen" <boah123@hotmail.com> wrote in message
> > news:bgbf5g$8o1$1@news4.tilbu1.nb.home.nl...

> > > Hello,
> > >
> > > Can you use the ASP.NET C# Regular Expression Validator to make sure
> > > that a user can only upload filenames with extension *.jpg?
> > >
> > > If so, how?
> > > Because I don't know how the expression should look like.
> > >
> > > Greetings en thanx in advance!
> > >
> > >

> >
> >

>
>