DateUtilities.cs

DateUtilities.cs

using System;
using System.Globalization;

namespace eConduct.Extensions
{
    public enum Quarter
    {
        First = 1,
        Second = 2,
        Third = 3,
        Fourth = 4
    }

    public enum Month
    {
        January = 1,
        February = 2,
        March = 3,
        April = 4,
        May = 5,
        June = 6,
        July = 7,
        August = 8,
        September = 9,
        October = 10,
        November = 11,
        December = 12
    }

    public static class DateTimeExtensions
    {
        private static readonly GregorianCalendar gc = new GregorianCalendar();

        public static int GetWeekOfMonth(this DateTime date)
        {
            var first = new DateTime(date.Year, date.Month, 1);
            return date.GetWeekOfYear() - first.GetWeekOfYear() + 1;
        }

        static int GetWeekOfYear(this DateTime date)
        {
            return DateTimeExtensions.gc.GetWeekOfYear(date, CalendarWeekRule.FirstDay, DayOfWeek.Sunday);
        }

        public static DateTime GetStartOfDay(this DateTime date)
        {
            return DateUtilities.GetStartOfDay(date); 
        }

        public static DateTime GetEndOfDay(this DateTime date)
        {
            return DateUtilities.GetEndOfDay(date); 
        }

        public static DateTime GetStartOfMonth(this DateTime date)
        {
            return DateUtilities.GetStartOfMonth(date.Month, date.Year);
        }

        public static DateTime GetEndOfMonth(this DateTime date)
        {
            return DateUtilities.GetEndOfMonth(date.Month, date.Year);
        }

        public static DateTime GetStartOfCurrentMonth(this DateTime date)
        {
            return DateUtilities.GetStartOfCurrentMonth();
        }

        public static DateTime GetEndOfCurrentMonth(this DateTime date)
        {
            return DateUtilities.GetEndOfCurrentMonth();
        }
    }

    public class DateUtilities
    {
        #region Days 

        public static DateTime GetStartOfDay(DateTime date)
        {
            return new DateTime(date.Year, date.Month, date.Day, 0, 0, 0, 0);
        }

        public static DateTime GetEndOfDay(DateTime date)
        {
            return new DateTime(date.Year, date.Month, date.Day, 23, 59, 59, 999);
        }

        #endregion 

        #region Months

        public static DateTime GetStartOfMonth(int month, int year)
        {
            return new DateTime(year, month, 1, 0, 0, 0, 0);
        }

        public static DateTime GetEndOfMonth(int month, int year)
        {
            return new DateTime(year, month, DateTime.DaysInMonth(year, month), 23, 59, 59, 999);
        }

        public static DateTime GetStartOfCurrentMonth()
        {
            return GetStartOfMonth(DateTime.Now.Month, DateTime.Now.Year);
        }

        public static DateTime GetEndOfCurrentMonth()
        {
            return GetEndOfMonth(DateTime.Now.Month, DateTime.Now.Year);
        }
        #endregion
    }
}