C# Regex Phone Number Check Accepts Only xxx-xxx-xxxx

Question

I have the following phone numbers and I need a regex that validate only numbers with format xxx-xxx-xxxx

281-388-0388   OK
281 388 0388   NO OK
(281)-388-0388 NO OK
(281)-388-0388 NO OK

I have this regex $?\d{3}$?-? *\d{3}-? *-?\d{4} but all the above four number will be valid.

JGNI · Answer 1 · 2020-07-14T15:56:25.327

0

You want this as a regex ^[0-9]{3}-[0-9]{3}-[0-9]{4}$

edited Jul 14 '20 at 15:56

answered Jul 14 '20 at 15:19

JGNI

score 0 · Accepted Answer · answered Jul 14 '20 at 15:24

0

Why not simply the following:

^\d{3}-\d{3}-\d{4}$

answered Jul 14 '20 at 15:24

`\d` matches more than [0-9] in most modern regex engines. – JGNI Jul 14 '20 at 15:58

2 Answers2