unity regular expressions

Question

Hello I am using the following regex command to only allow numbers be inputted into a text field

Regex rgx = new Regex("[^0-9]");

however this obviously doesnt allow the inputting of positive and negative signs +/-. I would like to be able to input -9 for a negative value but when i do it comes back as 09 instead. Any help in getting the regular expression right would be appreciated.

unfortunatel that doesnt work in unity c# scripts but thanks for the help — Alan Fletcher, Mar 22 '13 at 23:44
It may be good idea to show a bit more code - your regular expression disallows one digit, so it is not very clear what exactly you are trying to validate this way. — Alexei Levenkov, Mar 22 '13 at 23:49
@AlanFletcher - it was more an idea about how to approach the problem. Someone answered below with something that has exactly the same semantics. — Pawel, Mar 22 '13 at 23:53
initVel1 = rgx.Replace(initVel1, "0"); that is where i call it to replace text values — Alan Fletcher, Mar 22 '13 at 23:57
possible duplicate of [Regex for numbers only](http://stackoverflow.com/questions/273141/regex-for-numbers-only) — Heisenbug, Mar 23 '13 at 00:11

score 4 · Answer 1 · answered Mar 23 '13 at 00:36

4

There you go, this one works 100% just tested to make sure ;)

Regex r = new Regex("^([-+]?)?[0-9]+(,[0-9]+)?$");

answered Mar 23 '13 at 00:36

Thalmann

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Regex rgx = new Regex("[^-][^0-9]+"); it does work but weirdly for exactly what im trying to do, the code i entered here works best for me. thnk you for all your help and time. its appreciated – Alan Fletcher Mar 23 '13 at 00:49
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The one you have written should NOT work as a regular expression in C# with the input '[^-]' it allows every character but the minus... – Thalmann Mar 23 '13 at 00:53

score 0 · Answer 2 · answered Mar 22 '13 at 23:49

0

Your expression resolves to everything except 0 to 9 in my view... To allow any number with positive or negative sign I would use the following expression:

([-+]{0,1}[0-9]+)

+ or - at the beginning 0 or 1 times, and any quantity>0 of 0...9 after.

answered Mar 22 '13 at 23:49

Appleshell

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score 0 · Answer 3 · answered Mar 23 '13 at 00:49

0

Regex rgx = new Regex("[^-][^0-9]+");

answered Mar 23 '13 at 00:49

Alan Fletcher

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unity regular expressions

3 Answers3