using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        var today = "1/8/2015";

​

        // create the string arrays to hold the dates from the text files.     Initialize to null.

        List<string> dateLinesWeek = null;

        List<string> dateLinesMonth = null;

​

        // this is the text file that contains the dates for week-end run dates.

        dateLinesWeek = new List<string>() {

            "1/1/2015", 

            "1/8/2015", 

            "1/15/2015", 

            "1/22/2015", 

            "1/29/2015"

        };

        dateLinesMonth= new List<string>() 

        {

            "1/15/2015", 

            "2/15/2015", 

            "3/15/2015"

        };

        if (dateLinesMonth.Contains(today))

        {

            Console.WriteLine("Execute B");

        }

        else if(dateLinesWeek.Contains(today))

        {

            Console.WriteLine("Execute A");

        }

        //System.Threading.Thread.Sleep(3000);

    }

}