using System;

using System.Globalization;

​

public class Program

{

    public static void Main()

    {

        var input = "12/10/2012, 12/15/2015";

        String[] dates = input.Split(',');

​

        if(dates.Length != 2){

            Console.WriteLine("I said 2 dates");

        } else {

            foreach (var date in dates)

            {

                DateTime parsedDate;

                if(DateTime.TryParse(date, new CultureInfo("es"), DateTimeStyles.None, out parsedDate))

                {

                    Console.WriteLine("{0} Perfect!", parsedDate);

                }

                else 

                {

                    Console.WriteLine("{0} Not right sir!", date);

                }

            }

        }

        Console.ReadLine();

    }

}