Regular expression to match "CP" followed by 3-5 digits

Question

What would be the regex to accept "CP123" The first two letters are CP and the other 3 or 4 or 5 ns.

+1

Waheed May 25 '09 at 10:41

8 answers

This will suit your requirements:

^CP\d{3,5}$

The ^ matches the beginning of a line, so it does not allow any characters to the left of "CP".

\ d matches a digit, {3,5} matches 3-5 digits.

$ matches the end of the line, so it doesn't allow characters to be added after numbers.

If you are using regex in a validation control, you can remove the ^ and $ as added by the control:

CP\d{3,5}

+6

Guffa May 25 '09 at 10:52

This should work for all regex engines:

CP[0-9]{3,5}

+4

soulmerge May 25 '09 at 10:43

As per the update in the comments:

CP\d{1,5}

if you want one to five digits after CP. Otherwise use

CP\d+

if you just want CP followed by at least one digit.

+2

Brian Rasmussen May 25 '09 at 11:03

even if your question is not very clear, this should work:

r'^CP[0-9]{3,5}$'

+1

DrFalk3n May 25 '09 at 10:48

Regex regxExp = new Regex( "CP[0-9]{3,5}" );
bool result = regxExp.IsMatch( //Expression );

0

Sauron May 25 '09 at 10:58

Thanks everyone

^ [Cc] [Pp] \ d {1,5} $

is the desired answer to my question.

Thanks for helping me.

0

Waheed May 25 '09 at 11:10

"$CP123[3-5]^"

-3

takete.dk May 25 '09 at 10:43

Canopus · Accepted Answer · 2009-05-25T10:43:12+0000

CP[0-9]{3,5}