C# Regex match anything inside Parentheses

c# regex parentheses
Michael D. Irizarry picture Michael D. Irizarry · Dec 15, 2011 · Viewed 33.2k times · Source

I want to match anything inside parentheses but the result must exclude the parentheses as well.

Examples:
Initialize(P90W)
Brake(45X)

Result:
990W
45X

note results without the Parentheses.

I've been trying to make this work but to no avail I tried a few variations but I know it's a simple thing I'm missing and I don't want to go using Replace to achieve it.

var item = "Brake(45X)"
Regex searchTerm = new Regex(@"\((.*)\)");
var value = (searchTerm.Match(item).Groups.Count > 0) ?
    searchTerm.Match(item).Groups[0].Value : string.Empty;

Answer

FailedDev picture FailedDev · Dec 15, 2011

Some people accuse me of using zero width assertions all the time:

resultString = Regex.Match(subjectString, @"(?<=\().+?(?=\))").Value;

But they do exactly what you want. Don't capture what you don't want to capture.

Related questions

C# remove parenthesis from string

This seems to be a common question for C# users and after research and multiple attempts I cant for the life of me remove a pair of parenthesis from a string. The string I am having a problem with is …

Read More
Regular expression to check if password is "8 characters including 1 uppercase letter, 1 special character, alphanumeric characters"

I want a regular expression to check that a password must be eight characters including one uppercase letter, one special character and alphanumeric characters. And here is my validation expression which is for eight characters including one uppercase letter, one …

Read More
Regex that accepts only numbers (0-9) and NO characters

I need a regex that will accept only digits from 0-9 and nothing else. No letters, no characters. I thought this would work: ^[0-9] or even \d+ but these are accepting the characters : ^,$,(,), etc I thought that both the regexes …

Read More