using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(\d+(?=\[))\[([^\(\[\{\}\]\)]+)\]";
string substitution = @"";
string input = @"//Valid match
12[red,green],13[xs,xl,xxl]
number[anythingBut ()[]{},anythingBut ()[]{}](,number[anythingBut ()[]{},anythingBut ()[]{}]) or nothing
//Not valid match
12[red,green],13[xs,xl,xxl 9974-?ds12[dfgd,dfgd]]";
Regex regex = new Regex(pattern);
string result = regex.Replace(input, substitution);
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx