using System;
using System.Globalization;

namespace Enum
{
    class Program
    {
        static void Main(string[] args)
        {
            var s = "18-2-2014 00:00:00";
            var date = DateTime.ParseExact(s,
                                            "dd-M-yyyy HH:mm:ss",
                                            CultureInfo.InvariantCulture);
            Console.WriteLine(date);
        } 
    }
}