Use the DaysInMonth() method to retrieve the number of days in a particular month and year : DateTime « Date Time « C# / CSharp Tutorial






  1. C# / CSharp Tutorial
  2. Date Time
  3. DateTime
using System;

class MainClass
{
  public static void Main()
  {

    int days = DateTime.DaysInMonth(2004, 1);
    Console.WriteLine("DateTime.DaysInMonth(2004, 1) = " + days);
  }

}

DateTime.DaysInMonth(2004, 1) = 31




13.1.DateTime
13.1.1.Creating specific date/times: year, month, day, hour, minute, second
13.1.2.Create a DateTime with the current date and time
13.1.3.Create a TimeSpan representing 1 week and subtract from a DataTime
13.1.4.Add seconds to current time
13.1.5.Create a DateTime instance, specifying the year, month, and day
13.1.6.Create a DateTime instance, specifying the year, month, day, hour, minute, second, and millisecond
13.1.7.Create a DateTime instance, specifying the year, month, day, and JulianCalendar object
13.1.8.Create a DateTime instance, specifying the number of ticks
13.1.9.Create a TimeSpan instance, and add it to DateTime
13.1.10.Use the Now and UtcNow properties to get the currrent date and time
13.1.11.Display the Date, Day, DayOfWeek, DayOfYear, Ticks, and TimeOfDayProperties of DateTime
13.1.12.Use the Compare() method to compare DateTime instances
13.1.13.Use the overloaded less than operator (<) to compare two DateTime instances
13.1.14.Use the Equals() method to compare DateTime instances
13.1.15.Use the DaysInMonth() method to retrieve the number of days in a particular month and year
13.1.16.Use the IsLeapYear() method to determine if a particular year is a leap year
13.1.17.Use the overloaded addition operator (+) to add a TimeSpan to a DateTime
13.1.18.Use the overloaded subtraction operator (-) to subtract a TimeSpan from a DateTime
13.1.19.Use the AddYears(), AddMonths(), AddDays(), AddMinutes(), and AddSeconds() methods to add periods to a DateTime
13.1.20.Use the ToFileTime() method to convert a DateTime to an operating system file timestamp
13.1.21.Use the FromFileTime() method to convertan operating system file timestamp to a DateTime
13.1.22.Benchmark Timing with DateTime