using System;

using System.Text.RegularExpressions;

​

public class Program

{

    public static void Main(string[] args)

    {

        string s = "{\"MMM dd hh:mm:ss\",\"dd/MMM/yyyy:hh:mm:ss\",\"yyyy-MM-dd hh:ss:mm.fff\"}";

        var regexstr = @"""(?:[^""])*""";

        Regex regex = new Regex(regexstr);

        var result = regex.Matches(s);

        //var result = s.Split(',');

        foreach(var item in result)

        {

            Console.WriteLine(item);

        }

    }

}