using System;

using System.Linq;

using System.Text.RegularExpressions;

​

namespace Example

{

    class Program

    {

        static void Main()

        {

            string example = @"a ""b"" c d ""e f"" g h i";

​

            // match quotations first

            Console.WriteLine("Quoted Content...");

            MatchCollection matches = Regex.Matches(example, @""".*?""");

            foreach (Match match in matches)

            {

                Console.WriteLine($"Match: {match.Value} Index: {match.Index}");

            }

            Console.WriteLine();

​

            // split to get non-quoted material

            Console.WriteLine("Non Quoted Content...");

            string[] splits = Regex.Split(example, @""".*?""").Where(x => !string.IsNullOrWhiteSpace(x)).ToArray();

            foreach (string s in splits)

            {

                Console.WriteLine(s);

            }

            Console.WriteLine();

​

            // split by white space

            Console.WriteLine("White space splits...");

            foreach (string nonquotedContent in splits)

            {

                string[] whiteSpaceSplits = Regex.Split(nonquotedContent, @"\s+").Where(x => !string.IsNullOrWhiteSpace(x)).ToArray();

                foreach (string whiteSpaceSplit in whiteSpaceSplits)

                {

                    Console.WriteLine(whiteSpaceSplit);

                }

            }

            Console.WriteLine();

​

            Console.WriteLine("Press [Enter] to continue...");

            Console.ReadLine();

        }

    }

}

​