CODEWITHSUNDEEP
regex
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Reputation: 38094

Regex to allow only digits and "-" in WPF 2010

I wrote Regex to allow only digits. It is @"[0-9]" and it works perfectly. But I would like to add a symbol "-" in regex. I want to allow digits and "-". How to do it?) I've tried such mask @"[0-9]\{-}" but it allows nothing.

I have seen recently that if I input hyphen then my program does not understand as "hyphen". This is a reason why your all masks did not work. Nevertheless, they are all correct. Thanks a lot for your help. Now I will find how to read hyphen as "-" in WPF 2010.

Upvotes: 2

Views: 1563

Answers (4)

Terry Li
Terry Li

Reputation: 17268

I assume you are testing phone or fax numbers consisting of only digits and hyphens.

You may try [\d\-]+ here. Note: to match a single digit or hyphen remove +.

Upvotes: 1

murgatroid99
murgatroid99

Reputation: 20267

Hypens (-) do not act like range specifiers at the beginning of a character set, so you can do this with the regex

@"[-0-9]"

or if, like in most regex engines, WPF allows character set shorthands in character sets, you can also use

@"[-\d]"

or, as the other answers mentioned, you can escape the - to put it in the regex, as in either of these two regular expressions

@"[0-9\-]"
@"[\d\-]"

Upvotes: 3

Laith
Laith

Reputation: 6091

Escape it in the range like this:

@"[0-9\-]

Upvotes: 2

ruakh
ruakh

Reputation: 183251

I'm not familiar with WPF 2010, but if it's like most other regex engines, you can write:

@"[0-9-]"

Upvotes: 1

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