How to Get Week Number of the Month in C#

using System;

namespace Tutorialsrack
{
    class Program
    {
        /*How to get the Week number of the month using a specific date in C#*/
        static void Main(string[] args)
        {
            //initialize a datetime variable with today
            DateTime date = DateTime.Now;

            //print Week No. of the Month
            Console.WriteLine("Week Number of The Month is: {0}", GetWeekNumberOfMonth(date));

            Console.ReadKey();
        }

        //This method is used to Get Week no. of the month 
        private static int GetWeekNumberOfMonth(DateTime date)
        {
            date = date.Date;
            DateTime firstMonthDay = new DateTime(date.Year, date.Month, 1);
            DateTime firstMonthMonday = firstMonthDay.AddDays((DayOfWeek.Monday + 7 - firstMonthDay.DayOfWeek) % 7);
            if (firstMonthMonday > date)
            {
                firstMonthDay = firstMonthDay.AddMonths(-1);
                firstMonthMonday = firstMonthDay.AddDays((DayOfWeek.Monday + 7 - firstMonthDay.DayOfWeek) % 7);
            }
            return (date - firstMonthMonday).Days / 7 + 1;
        }
    }  
}