using System;

using System.Globalization;     

​

public class Program

{

    public static void Main()

    {

          /* IFormatProvider frFormatProvider = new CultureInfo("fr-FR", true);

            IFormatProvider enFormatProvider = new CultureInfo("en-US", true);

         DateTime date = new DateTime();*/

         DateTime date2 = new DateTime(2019, 07, 08);

        string dateStr1 = "08/07/2019";

        string dateStr2 = date2.ToString("dd/MM/yyyy");

        //date = DateTime.ParseExact(dateStr, "dd/MM/yyyy",  frFormatProvider);

        //Console.WriteLine("ParseExact =>" + date);

        //DateTime.TryParse(dateStr, frFormatProvider, DateTimeStyles.None, out date);

        //Console.WriteLine("fr =>" +date);

        /*DateTime.TryParse(dateStr, enFormatProvider, DateTimeStyles.None, out date);*/

        DateTime d1 = StringToDateFR(dateStr1);

        DateTime d2 = StringToDateFR(dateStr2);

        Console.WriteLine(dateStr1);

        Console.WriteLine("d1 => " + d1+ "===" + d1.Day + "/" + d1.Month);

        Console.WriteLine();

        Console.WriteLine(dateStr2);

        Console.WriteLine("d2 => " + d2+ "==="+ d2.Day + "/" + d2.Month);

        Console.WriteLine();

        Console.WriteLine(d1 >= d2);

        Console.WriteLine(Equals(d1, d2)); 

    }

     protected static DateTime StringToDateFR(string dateStr)

        {

            IFormatProvider frFormatProvider = new CultureInfo("fr-FR", true);

            IFormatProvider enFormatProvider = new CultureInfo("en-US", true);

            string format = "dd/MM/yyyy";

            if (string.IsNullOrEmpty(dateStr))

                return new DateTime();

​

            DateTime date = new DateTime();

​

            if (/*DateTime.TryParseExact(dateStr, format, frFormatProvider, DateTimeStyles.None, out date) ||*/

                DateTime.TryParseExact(dateStr, format, enFormatProvider, DateTimeStyles.None, out date))

                return date;

​

            return date;

        }

}