Regex blues

[Frank Rizzo]

I am trying to come up with a regex to validate a US phone number with
an optional extention.

These are valid

714-895-8832
714-895-8832 x12345
(714) 895-8832
(714) 895-8832 x12345

Does anyone have one handy?

Thanks.

 

[Ken Arway]

I am trying to come up with a regex to validate a US phone number with
an optional extention.

These are valid

714-895-8832
714-895-8832 x12345
(714) 895-8832
(714) 895-8832 x12345

Regex regex = new Regex(@"(\(?\d{3}\)?(?:\s?|-)\d{3}-\d{4}\s?(?:x\d{5})?)",
(RegexOptions) 0);

Note that the space before the extension is optional so that the regex will also capture
(714) 895-8832x12345.

 

[Frank Rizzo]

You are the man.

Regex regex = new
Regex(@"(\(?\d{3}\)?(?:\s?|-)\d{3}-\d{4}\s?(?:x\d{5})?)",
(RegexOptions) 0);

Note that the space before the extension is optional so that the regex
will also capture
(714) 895-8832x12345.