How to verify that, using regex, all characters in a string are digits?

Question

How can I verify that every character in a string is a 0-9 digit? For example: 1343151234234 is valid but 2342343ABC34234 is not valid. Thank you.

possible duplicate of [Regex for numbers only](http://stackoverflow.com/questions/273141/regex-for-numbers-only) — Bo Persson, Jun 28 '12 at 17:42

score 5 · Answer 1 · answered Jun 28 '12 at 14:38

5

^\d+$

Using 'SingleLine' option (in C# it is RegexOptions.SingleLine).

answered Jun 28 '12 at 14:38

Derreck Dean

1 Answers1