CODEWITHSUNDEEP
c#regex
sean stylez
sean stylez

Reputation: 33

How do i use REGEX to ignore something

I'm trying to ignore some text in my regex which occurs quite rarely. My regex is

var Runners = new Regex(@"(?<=y, |f, |m, )(.*?)(?= runners\))").Matches(set);

The line in question is

    Anthony Mildmay, Peter Cazalet Memorial Handicap Chase (Sponsored By Ing Barings) <span class=aside>3m 5f 110y</span></h2><ul class=list><li>(5yo+, 3m 5f 110y, 16 runners)

there is an extra 'y, ' at the beginning so it pick up too much data as in this example all I want is my regex to find '16'.

I don't think this could happen often but it stopped on record 134 of 216424 with this error. Is there a way perhaps of only looking 10 spaces behind the word runners to look for 'y, ' or 'f, ' or 'm, '? or maybe look for 1 number followed by 'y, ' or 'f, ' or 'm, '?

Upvotes: 2

Views: 267

Answers (2)

D. Foley
D. Foley

Reputation: 1024

https://regex101.com/

Using Lucero's example works for your string. Only thing you will have to remove is the '*' from the \s (seems to throw a pattern error).

(?<=[yfm],\s)\d+(?=\s*runners\))

Put your string in regex101 and use that expression, it finds 16.

Upvotes: 0

Lucero
Lucero

Reputation: 60190

This may work for you:

(?<=[yfm],\s*)\d+(?=\s*runners\))

Using .* is always "dangerous" (in that it may match something different than anticipated), even when it is not greedy. Try to make your patterns as specific as possible to get correct matches.

Upvotes: 1

Related Questions