LastDayOfMonth extension

CSharp · Console

/Program.cs

using System;
					
public class Program
{
	public static void Main()
	{
		DateTime today = DateTime.Now;
		Console.WriteLine(today);
		
		DateTime lastDay = today.LastDayOfMonth();
		Console.WriteLine(lastDay);
		
		Console.WriteLine(DateTime.Now.LastDayOfMonth());
	}
}

public static class DateTimeExtensions
{
	public static DateTime LastDayOfMonth(this DateTime date)
	{
		DateTime EOM = new DateTime(
			date.Year,date.Month,
			DateTime.DaysInMonth(
				date.Year,
				date.Month
			)
		);
            
		return EOM;
	}
}