如何从c#中获取年份和周数的月份数？

using System;
using System.Globalization;

public class Program
{
    public static void Main()
    {
        DateTime date = DateTime.Now;
        int year = date.Year;
        int weekOfYear = CultureInfo.CurrentCulture.Calendar.GetWeekOfYear(date, CalendarWeekRule.FirstDay, DayOfWeek.Sunday);

        Console.WriteLine($"Year: {year}");
        Console.WriteLine($"Week of Year: {weekOfYear}");
    }
}