REGEX match from string between characters in string

Question

4.00/5 (1 vote)

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Hi,
I would like to match a string between || in a string.
Here is pat of the code

match = ">ipi|IPI00831484| IPI00832484.1 Uncharacterized etc"
string match = stream.Readline();

I would like to match the between the || e.g. the IPI00831484
with

match = Regex.Match(match, "IPI00831484");

This doesn't work. Can anyone direct me to what is worng or any alternative solution?
Thanks,
Shekee

Posted 11-Feb-11 13:58pm

shekarchee

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3 solutions

Solution 2

If you prefer regular expressions then try this:

C#

Regex rx = new RegEx("|[^|]*|");
Match match = rx.Match(">ipi|IPI00831484| IPI00832484.1 Uncharacterized etc");
if(match.Succeess)
{
    Console.WriteLine(match.Value);
}

Cheers!

Posted 11-Feb-11 14:18pm

Manfred Rudolf Bihy

Updated 11-Feb-11 14:22pm

Comments

Sergey Alexandrovich Kryukov 11-Feb-11 22:32pm

You could not stand it! (Not a bid deal though...), my 5.
--SA

Sergey Alexandrovich Kryukov 11-Feb-11 22:43pm

However, such questions make little sense, why not pushing OP to learn a bit?
I tried, please see my Answer.
--SA

Solution 3

Your attempted Regex sample shows that you did not even try to read on how to use Regular Exception. Why doing guess work?

Your idea of asking your question on CodeProject was not so reasonable either. You ask one, two time, now what. This is pretty much like asking "How much is 2*2", and later "How much is 11*3?", don't you think so. At the same time there is more then enough literature and references (you cannot remember it all, will need a reference).

Read this: http://en.wikipedia.org/wiki/Regex[^], http://msdn.microsoft.com/en-us/library/hs600312.aspx[^], use http://cstheory.stackexchange.com/questions/1854/is-finding-the-minimum-regular-expression-an-np-complete-problem[^], for reference: http://www.regular-expressions.info/reference.html[^] and http://www.regular-expressions.info/refadv.html[^].

Good luck,

—SA

Posted 11-Feb-11 16:42pm

Sergey Alexandrovich Kryukov

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Manfred Rudolf Bihy · Accepted Answer · 2011-02-11T14:08:00

Solution 1

No need for a Regular Expression here. Use String.Split:

String match = ">ipi|IPI00831484| IPI00832484.1 Uncharacterized etc"
String[] values = match.Split(new char[] {'|'});
//values now contains three string 
String yours = values[1];

Cheers!

Posted 11-Feb-11 14:08pm

Manfred Rudolf Bihy

Comments

Sergey Alexandrovich Kryukov 11-Feb-11 22:31pm

Yes, why indeed? As it comes to finding anything in a string, always Regex...
My 5.
--SA