Q: Regular expression

[Geoff Jones]

Hi

Can anybody give me some advice on a regular expression?

I want to get two substrings out of a string like:

"This is a test & I hope it works"

i.e. I want the substring before the & and the substring after the &:

"This is a " and " I hope it works"

Can anybody tell me what the regular expression, using Regex, is?

Thanks in advance

Geoff

[Mattias Sjögren]

Re: Q: Regular expression

>Can anybody tell me what the regular expression, using Regex, is?

Any reason you have to use Regex for this? It would be trivial to do
with just the String class (or VB's InStr, Left, Mid functions).



Mattias

--
Mattias Sjögren [MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
Please reply only to the newsgroup.

[Armin Zingler]

Re: Regular expression

"Geoff Jones" <nodamnspam@ema il.com> schrieb[color=blue]
>
> Can anybody give me some advice on a regular expression?[/color]


Have a look @ this group for language unrelated questions:
microsoft.publi c.dotnet.framew ork


Armin

[Herfried K. Wagner [MVP]]

Re: Regular expression

"Geoff Jones" <nodamnspam@ema il.com> schrieb:[color=blue]
> Can anybody give me some advice on a regular expression?
>
> I want to get two substrings out of a string like:
>
> "This is a test & I hope it works"
>
> i.e. I want the substring before the & and the substring after the &:
>
> "This is a " and " I hope it works"
>
> Can anybody tell me what the regular expression, using Regex, is?[/color]

What's the reason why you don't use 'Split'?

--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://classicvb.org/petition/>

[Dragon]

Re: Regular expression

Hi Jeoff,

If you really want to use regex for this job it will be:

~
Dim str As String = "This is a test & I hope it works"
Dim result() As String = Regex.Split(str , "&")
~

However, if I were you I would use:

~
Dim str As String = "This is a test & I hope it works"
Dim result() As String = str.Split("&"c)
~

Hope it helps

Roman

[Geoff Jones]

Re: Regular expression

Thanks everyone.

The reason I wanted to use Regular expressions was merely to learn more
about it i.e. I agree that the String class can be used but I wondered how
Regex could be used.

Thanks again

Geoff

"Dragon" <no@spam.please > wrote in message
news:%23fa$w8Nn FHA.3900@TK2MSF TNGP09.phx.gbl. ..[color=blue]
> Hi Jeoff,
>
> If you really want to use regex for this job it will be:
>
> ~
> Dim str As String = "This is a test & I hope it works"
> Dim result() As String = Regex.Split(str , "&")
> ~
>
> However, if I were you I would use:
>
> ~
> Dim str As String = "This is a test & I hope it works"
> Dim result() As String = str.Split("&"c)
> ~
>
> Hope it helps
>
> Roman
>
>[/color]

[Ronchese]

Re: Regular expression

For that specific case, use:

(\w+\s)+(?=&)|( \w+\s)+



Explanation:

(\w+\s)+ => any word followed by a space, one or more times
(?=&) => conditional, specifying the next character must be a '&'
| => optional


so:
(\w+\s)+(?=&) => any word followed by a space, one or more times,
matched with a '&' character


Use the 'The regulator' to test your expressions: http://regex.osherove.com/

[]s
Cesar











"Geoff Jones" <nodamnspam@ema il.com> escreveu na mensagem
news:42f88226$0 $12883$cc9e4d1f @news.dial.pipe x.com...
Hi

Can anybody give me some advice on a regular expression?

I want to get two substrings out of a string like:

"This is a test & I hope it works"

i.e. I want the substring before the & and the substring after the &:

"This is a " and " I hope it works"

Can anybody tell me what the regular expression, using Regex, is?

Thanks in advance

Geoff