Question

This is my string: "This Is {{ dsfdf {{dsfsd}} ewrwrewr }} My Result".

I want to remove the outer curly brackets with their content.
The result should be "This Is My Result".

This is my best shot at the moment:

Text = Regex.Replace(Text, "{{([^}]*)}}", String.Empty);

but it doesn’t work well. I get "This Is ewrwrewr }} My Text"

Perhaps it should be solved with Balance Matching…

I would be very appreciate if someone could help me solve it, because although many tries I couldn’t do it myself.

Answer 1

A simple but slow way is to apply the regex multiple times until there are no more changes:

using System;
using System.Text.RegularExpressions;

class Program
{
    static void Main(string[] args)
    {
        string s = "This Is {{ dsfdf {{dsfsd}} ewrwrewr }} My Result";

        Regex regex = new Regex("{{({?}?[^{}])*}}");
        int length;
        do
        {
            length = s.Length;
            s = regex.Replace(s, "");
        } while (s.Length != length);

        Console.WriteLine(s);
     }
}