using System;

using System.Text.RegularExpressions;

​

public class Program

{

    public static void Main()

    {

        Regex regex = new Regex(@"([""'])(?:(?=(\\?))\2.)*?\1");

            foreach (var match in regex.Matches("{{\"textA\",\"textB\",\"textC\"}}"))

            {

                Console.WriteLine(match);

            }

    }

}