How to extract text that lies between parentheses

Question

I have string like (CAT,A)(DOG,C)(MOUSE,D)

i want to get the DOG value C using Regular expression.

i tried following

Match match = Regex.Match(rspData, @"\(DOG,*?\)");
if (match.Success)
 Console.WriteLine(match.Value);

But not working could any one help me to solve this issue.

Answer 1

You can use

(?<=\(DOG,)\w+(?=\))?
(?<=\(DOG,)[^()]*(?=\))

See the regex demo .

Details :

• (?<=\(DOG,) - a positive lookbehind that matches a location that is immediately preceded with (DOG, string
• \w+ - one or more letters, digits, connector punctuation
• [^()]* - zero or more chars other than ( and )
• (?=\)) - a positive lookahead that matches a location that is immediately followed with ) .

Answer 2

As an alternative you can also use a capture group:

\(DOG,([^()]*)\)

Explanation

• \(DOG, Match (DOG,
• ([^()]*) Capture group 1, match 0+ chars other than ( or )
• \) Match )

Regex demo | C# demo

String rspData = "(CAT,A)(DOG,C)(MOUSE,D)";
Match match = Regex.Match(rspData, @"\(DOG,([^()]*)\)");
if (match.Success)
    Console.WriteLine(match.Groups[1].Value);
}

Output

 C