DateTime

Description

The System.DateTime is a structure that represents date and time value. (Default format: yyyy-MM-dd hh:mm:ss.fff tt)

Creating DateTime using Parse method:

DateTime.Parse("2025-12-31 11:59:59.999 PM")

Creating DateTime using ToDateTime method:

Convert.ToDateTime("2025-12-31 11:59:59.999 PM")

DateTime	Value
`yyyy`	2025
`MM`	12
`dd`	31
`hh`	11
`HH`	23
`mm`	59
`ss`	59
`fff`	999
`tt`	PM

Features

Constructor

Signature	Description
`DateTime(int year, int month, int day, int hour, int minute, int second, int millisecond)`	Creates a new instance (structure instance) with the specified date and time values. The "hour" should specified in 24-hour format (0 to 23).

Properties

Property	Description
`int Day { get; }`	It returns the day (1 to 31) of the current date & time value.
`int Month { get; }`	It returns the month (1 to 12) of the current date & time value.
`int Year { get; }`	It returns the year (1 to 9999) of the current date & time value.
`int Hour { get; }`	It returns the hour (0 to 23) of the current date & time value.
`int Minute { get; }`	It returns the minute (0 to 59) of the current date & time value.
`int Second { get; }`	It returns the second (0 to 59) of the current date & time value.
`int Millisecond { get; }`	It returns the millisecond (0 to 999) of the current date & time value.
`int DayOfYear { get; }`	It returns the day of the year (1 to 366) based on the current date & time value.
`DayOfWeek DayOfWeek { get; }`	It returns the day of the week - Sunday to Saturday (0 to 6) based on the current date & time value.
`static DateTime Now { get; }`	It returns an instance of the DateTime structure that represents the current system date & time.

Methods

Method	Description
`string ToString()`	It returns the date & time value in the default date format, based on current Windows settings.
`string ToString(string format)`	It returns the date & time value in the specified format.
`string ToShortDateString()`	It returns the date value in the default short date format, based on current Windows settings. Eg: MM/dd/yyyy (12/31/2030)
`string ToLongDateString()`	It returns the date value in the default long date format, based on current Windows settings. Eg: dd MMMM yyyy (31 December 2030)
`string ToShortTimeString()`	It returns the date value in the default short time format, based on current Windows settings. Eg: hh:mm tt (11:59 PM)
`string ToLongTimeString()`	It returns the date value in the default long time format, based on current Windows settings. Eg: hh:mm:ss tt (11:59:59 PM)
`static int DaysInMonth(int year, int month)`	It returns the number of days in the specified month in the specified year.
`int CompareTo(DateTime value)`	It compares this instance to another date. Returns `-1` if earlier, `0` if equal, and `1` if later.
`TimeSpan Subtract(DateTime value)`	It returns an instance of `TimeSpan` structure representing the date difference between the current instance and the given date value.
`DateTime AddDays(double value)`	It creates and returns a new instance of `DateTime` structure after adding specified days (+ve or -ve) to the current date & time value.
`DateTime AddMonths(double value)`	It creates and returns a new instance of `DateTime` structure after adding specified months (+ve or -ve) to the current date & time value.
`DateTime AddYears(double value)`	It creates and returns a new instance of `DateTime` structure after adding specified years (+ve or -ve) to the current date & time value.
`DateTime AddHours(double value)`	It creates and returns a new instance of `DateTime` structure after adding specified hours (+ve or -ve) to the current date & time value.
`DateTime AddMinutes(double value)`	It creates and returns a new instance of `DateTime` structure after adding specified minutes (+ve or -ve) to the current date & time value.
`DateTime AddSeconds(double value)`	It creates and returns a new instance of `DateTime` structure after adding specified seconds (+ve or -ve) to the current date & time value.
`DateTime AddMilliseconds(double value)`	It creates and returns a new instance of `DateTime` structure after adding specified milliseconds (+ve or -ve) to the current date & time value.