Ungreedy regex in C#

Question

I have a string like fcsNotificationZK44_0376300009215000019_4158794.xml and a pattern (fcs.*)_ the target is to get fcsNotificationZK44 but standart C# Regex matched at fcsNotificationZK44_0376300009215000019 becouse it is greedy. In javascript I can use /U modifier to turn on ungreedy mode but how to solve it in C# Regex? Thanks.

Does this answer your question? [Regex Non-Greedy (Lazy)](https://stackoverflow.com/questions/13844168/regex-non-greedy-lazy) — Heretic Monkey, Jan 06 '21 at 17:30

score 15 · Accepted Answer · answered Mar 17 '15 at 17:33

15

Use *? to make the * non-greedy.

Reference: http://www.regular-expressions.info/repeat.html

answered Mar 17 '15 at 17:33

NightOwl888

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Then you should tag it and credit @NightOwl888 as the correct/best answer. – Nicholas Carey Mar 17 '15 at 17:35

score 0 · Answer 2 · answered Mar 17 '15 at 17:35

0

You could use a not operator:

(fcs[^_]*)_

answered Mar 17 '15 at 17:35

Jim Sosa

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Ungreedy regex in C#

2 Answers2