Help with regular expression

[sondar@gmail.com]

Can anyone help me please?

I have a regular expression "^A .* B$"

If this matches against "A B A B" then how can I tell that ".*" was
matched against "B A"?

Thanks,
Campbell

[Alexander Mueller]

Re: Help with regular expression

sondar@gmail.co m schrieb:

Can anyone help me please?
>
I have a regular expression "^A .* B$"
>
If this matches against "A B A B" then how can I tell that ".*" was
matched against "B A"?
>
Thanks,
Campbell

I am not familar to RegExp in .Net
In VBScript and JavaScript you'd define a submatch by
simply using paranthesis:

'VBScript
rx.Pattern = "^A( .* )B$"

and return the part inbetween by accessing the submatch.
There are multiple ways to do this, one is

'VBScript
sm = rx.replace("A B A B", "$1")



I know dotnet uses a different term then 'submatch'.
(i think they call it backreference instead ... not sure)
and a different method for retrieving it, but the basic mechanism
and the pattern are the same.

MfG,
Alex

[eBob.com]

Re: Help with regular expression

I am certainly not a regex expert, but I think that what you need to search
for is "capture".

Good Luck, Bob

<sondar@gmail.c omwrote in message
news:91f74c6a-daea-4cfc-a4be-bb7d07b1a22c@e6 g2000prf.google groups.com...

Can anyone help me please?
>
I have a regular expression "^A .* B$"
>
If this matches against "A B A B" then how can I tell that ".*" was
matched against "B A"?
>
Thanks,
Campbell

[sondar@gmail.com]

Re: Help with regular expression

Thank you both, that was the push I needed. I needed to use named
groups, i.e. change the pattern to

"^A(?<mymatch>. *)B$"

I can then use the re.Match().Grou ps collection to return the value of
the mymatch group which in the case above would be "B A".

Cheers,
Campbell