using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        var cmr = new List<CMR>();

        cmr.Add(new CMR());

        var activeProvider = cmr.Where(s => s.Status.Equals("Active", StringComparison.InvariantCultureIgnoreCase) && DateTime.UtcNow >= s.EffectiveDate).FirstOrDefault();

        Console.WriteLine("Linq Query Succeeded.");

        if (activeProvider == null)

        {

            throw new Exception("null Provider");

        }

        Console.WriteLine(activeProvider.EffectiveDate);

    }

    public class CMR

    {

        public string Status = "Active";

        //public string Status = null;

        public DateTime? EffectiveDate = null;

        //public DateTime? EffectiveDate = new DateTime(2017, 5, 12, 14, 22, 02);

        //public DateTime? EffectiveDate = DateTime.UtcNow.AddDays(2);

    }

}