Class DateTimeExtensions

Useful extension methods for System.DateTime.

Inheritance

Object

DateTimeExtensions

Inherited Members

System.Object.ToString()

Object.Equals(Object)

System.Object.Equals(System.Object, System.Object)

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

Object.MemberwiseClone()

Namespace: IRM

Assembly: IRM.dll

Syntax

public static class DateTimeExtensions

Methods

AddWeekdays(DateTime, Int32)

Returns a new System.DateTime that adds the specified number of weekdays to the value of this instance.

Declaration

public static DateTime AddWeekdays(this DateTime date, int days)

Parameters

System.DateTime date

System.Int32 days A specific number of days. Note that the number in the val parameter can be either positive or negative, and it express whole days.

Returns

System.DateTime A new System.DateTime object having a value that represents the sum of the current DateTime object and the specified number of weekdays.

AddWorkDays(DateTime, Int32)

Returns a new DateTime that adds the specified number of work days to the value of this instance of DateTime.

Declaration

public static DateTime AddWorkDays(this DateTime dateTime, int value)

Parameters

System.DateTime dateTime

System.Int32 value A number of whole work days.

Returns

System.DateTime A new DateTime that adds the specified number of work days to the value of this instance

Remarks

The value parameter can be negative or positive>

FirstDayInMonth(DateTime)

Returns the first day in a month.

Declaration

public static DateTime FirstDayInMonth(this DateTime date)

Parameters

System.DateTime date The date from which to return the first day in the month.

Returns

System.DateTime A System.DateTime with the first day in the month.

Holidays(DateTime)

Returns a Dictionary<TKey,TValue> including the dates and the swedish name of all holidays of the year of this instance.

Declaration

public static Dictionary<DateTime, string> Holidays(this DateTime from)

Parameters

System.DateTime from

Returns

Dictionary<System.DateTime, String> A Dictionary<TKey,TValue> including the dates and the swedish name of all holidays of the year of this instance.

Holidays(DateTime, DateTime)

Returns a Dictionary<TKey,TValue> including the dates and the swedish name of all holidays of the year of this instance to the year of to.

Declaration

public static Dictionary<DateTime, string> Holidays(this DateTime from, DateTime to)

Parameters

System.DateTime from

System.DateTime to

Returns

Dictionary<System.DateTime, String> A Dictionary<TKey,TValue> including the dates and the swedish name of all holidays of the year of this instance to the year of to.

IsWorkDay(DateTime)

Indicates whether this instance of DateTime is a work day.

Declaration

public static bool IsWorkDay(this DateTime dateTime)

Parameters

System.DateTime dateTime

Returns

Boolean A boolean value indicating whether this instance of DateTime is a work day.

LastDayInMonth(DateTime)

Returns the last day in a month.

Declaration

public static DateTime LastDayInMonth(this DateTime date)

Parameters

System.DateTime date The date from which to return the last day in the month.

Returns

System.DateTime A System.DateTime with the last day in the month.

Max(DateTime, DateTime)

Returns the latest of two dates.

Declaration

public static DateTime Max(DateTime val1, DateTime val2)

Parameters

System.DateTime val1 The first of two dates to compare.

System.DateTime val2 The second of two dates to compare.

Returns

System.DateTime Parameter val1 or val2, whichever is latest.

Min(DateTime, DateTime)

Returns the earliest of two dates.

Declaration

public static DateTime Min(DateTime val1, DateTime val2)

Parameters

System.DateTime val1 The first of two dates to compare.

System.DateTime val2 The second of two dates to compare.

Returns

System.DateTime Parameter val1 or val2, whichever is earliest.

NextDay(DateTime)

Returns the next day.

Declaration

public static DateTime NextDay(this DateTime date)

Parameters

System.DateTime date The date from which to return the next day.

Returns

System.DateTime A System.DateTime with next day.

ToLocalTime(DateTime, TimeZoneInfo)

Converts a UTC time to a time in the given time zone

Declaration

public static DateTime ToLocalTime(this DateTime utcTime, TimeZoneInfo targetTimeZone)

Parameters

System.DateTime utcTime The UTC time

TimeZoneInfo targetTimeZone The time zone to convert to

Returns

System.DateTime

ToLongDateString(DateTime)

Converts the value of the current System.DateTime object to its equivalent long date string representation.

Declaration

public static string ToLongDateString(this DateTime dateTime)

Parameters

System.DateTime dateTime

Returns

String A string that contains the long date string representation of the current System.DateTime object.

ToLongDateString(DateTimeOffset)

Converts the value of the current System.DateTimeOffset object to its equivalent long date string representation.

Declaration

public static string ToLongDateString(this DateTimeOffset dateTime)

Parameters

System.DateTimeOffset dateTime

Returns

String A string that contains the long date string representation of the current System.DateTimeOffset object.

ToLongTimeString(DateTime)

Converts the value of the current System.DateTime object to its equivalent long time string representation.

Declaration

public static string ToLongTimeString(this DateTime dateTime)

Parameters

System.DateTime dateTime

Returns

String A string that contains the long time string representation of the current System.DateTime object.

ToLongTimeString(DateTimeOffset)

Converts the value of the current System.DateTimeOffset object to its equivalent long time string representation.

Declaration

public static string ToLongTimeString(this DateTimeOffset dateTime)

Parameters

System.DateTimeOffset dateTime

Returns

String A string that contains the long time string representation of the current System.DateTimeOffset object.

ToRelativeDateString(DateTime)

Creates a string representing the relative time between date and System.DateTime.Now.

Declaration

public static string ToRelativeDateString(this DateTime date)

Parameters

System.DateTime date

Returns

String

ToRelativeDateStringUtc(DateTime)

Creates a string representing the relative time between date and System.DateTime.UtcNow.

Declaration

public static string ToRelativeDateStringUtc(this DateTime date)

Parameters

System.DateTime date

Returns

String

ToShortDateAndTimeOfDayString(DateTime)

Creates a string representing the date and the time of day from date.

Declaration

public static string ToShortDateAndTimeOfDayString(this DateTime date)

Parameters

System.DateTime date

Returns

String A string from date representing the date and the time of day.

ToShortDateString(DateTime)

Converts the value of the current System.DateTime object to its equivalent short date string representation.

Declaration

public static string ToShortDateString(this DateTime dateTime)

Parameters

System.DateTime dateTime

Returns

String A string that contains the short date string representation of the current System.DateTime object.

ToShortDateString(DateTimeOffset)

Converts the value of the current System.DateTimeOffset object to its equivalent short date string representation.

Declaration

public static string ToShortDateString(this DateTimeOffset dateTime)

Parameters

System.DateTimeOffset dateTime

Returns

String A string that contains the short date string representation of the current System.DateTimeOffset object.

ToShortTimeString(DateTime)

Converts the value of the current System.DateTime object to its equivalent short time string representation.

Declaration

public static string ToShortTimeString(this DateTime dateTime)

Parameters

System.DateTime dateTime

Returns

String A string that contains the short time string representation of the current System.DateTime object.

ToShortTimeString(DateTimeOffset)

Converts the value of the current System.DateTimeOffset object to its equivalent short time string representation.

Declaration

public static string ToShortTimeString(this DateTimeOffset dateTime)

Parameters

System.DateTimeOffset dateTime

Returns

String A string that contains the short time string representation of the current System.DateTimeOffset object.

ToSwedishTime(DateTime)

Converts a UTC time to a time in Sweden.

Declaration

public static DateTime ToSwedishTime(this DateTime utcTime)

Parameters

System.DateTime utcTime The UTC time

Returns

System.DateTime

ToUniversalTime(DateTime, TimeZoneInfo)

Converts a local time to a UTC time

Declaration

public static DateTime ToUniversalTime(this DateTime localTime, TimeZoneInfo sourceTimeZone)

Parameters

System.DateTime localTime The local time

TimeZoneInfo sourceTimeZone The time zone of the local time

Returns

System.DateTime

ToUnixTimeStamp(DateTime)

Returns a date converted to a Unix timestamp.

Declaration

public static long ToUnixTimeStamp(this DateTime dateTimeUtc)

Parameters

System.DateTime dateTimeUtc The date to convert to a Unix timestamp.

Returns

System.Int64 The number of seconds that have elapsed since 00:00:00 UTC Thursday, 1 January 1970.

WorkDaysFrom(DateTime, DateTime)

Calculates the number of workdays between this instance of DateTime and another DateTime.

Declaration

public static int WorkDaysFrom(this DateTime datum, DateTime value)

Parameters

System.DateTime datum

System.DateTime value

Returns

System.Int32