This snippet was orginally taken from C# Program to Campare Two Dates

using System;
namespace DateAndTime
{
    class milestoneProgram
    {
        static int Main()
        {
            DateTime d1 = new DateTime(2018, 05, 27);
            DateTime d2 = d1.AddDays(-10);

            if (d1 < d2){
                Console.WriteLine("Starting Date : {0}", d1);
                Console.WriteLine("Ending Date   : {0}", d2);
                }
            else {
                Console.WriteLine("Starting Date : {0}", d2);
                Console.WriteLine("Ending Date   : {0}", d1);
            };
            Console.Read();
            return 0;
    
        }
    }
}

Here is the output of the C# milestoneProgram:

/*
Starting Date : 05/17/2018 00:00:00
Ending Date   : 05/27/2018 00:00:00
*/