Class DateOnlyExtensions

Time-related extension methods for .

Inheritance
System.Object
DateOnlyExtensions
Namespace: X10D.Time
Assembly: X10D.dll
Syntax
public static class DateOnlyExtensions : object

Methods

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Age(DateOnly)

Returns the rounded-down integer number of years since a given date as of today.

Declaration
public static int Age(this DateOnly value)
Parameters
Type Name Description
DateOnly value

The date from which to calculate.
Returns
Type Description
System.Int32

The rounded-down integer number of years since value as of today.
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Age(DateOnly, DateOnly)

Returns the rounded-down integer number of years since a given date as of another specified date.

Declaration
public static int Age(this DateOnly value, DateOnly referenceDate)
Parameters
Type Name Description
DateOnly value

The date from which to calculate.
DateOnly referenceDate

The date to use as the calculation reference.
Returns
Type Description
System.Int32

The rounded-down integer number of years since value as of the date specified by referenceDate.
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Deconstruct(DateOnly, out Int32, out Int32, out Int32)

Deconstructs the current into its year, month, and day.

Declaration
public static void Deconstruct(this DateOnly value, out int year, out int month, out int day)
Parameters
Type Name Description
DateOnly value

The date to deconstruct.
System.Int32 year

When this method returns, contains the year.
System.Int32 month

When this method returns, contains the month.
System.Int32 day

When this method returns, contains the day.
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First(DateOnly, DayOfWeek)

Gets a date representing the first occurence of a specified day of the week in the current month.

Declaration
public static DateOnly First(this DateOnly value, DayOfWeek dayOfWeek)
Parameters
Type Name Description
DateOnly value

The current date.
DayOfWeek dayOfWeek

The day of the week.
Returns
Type Description
DateOnly

A representing the first occurence of dayOfWeek.
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FirstDayOfMonth(DateOnly)

Gets a date representing the first day of the current month.

Declaration
public static DateOnly FirstDayOfMonth(this DateOnly value)
Parameters
Type Name Description
DateOnly value

The current date.
Returns
Type Description
DateOnly

A representing the first day of the current month.
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GetIso8601WeekOfYear(DateOnly)

Gets the ISO-8601 week number of the year for the current date.

Declaration
public static int GetIso8601WeekOfYear(this DateOnly value)
Parameters
Type Name Description
DateOnly value

The date whose week number to return.
Returns
Type Description
System.Int32

The ISO-8601 week number of the year.
Remarks

This implementation is directly inspired from a blog post . about this subject.

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IsLeapYear(DateOnly)

Returns a value indicating whether the year represented by the current is a leap year.

Declaration
public static bool IsLeapYear(this DateOnly value)
Parameters
Type Name Description
DateOnly value

The date whose year to check.
Returns
Type Description
System.Boolean

true if the year represented by value is a leap year; otherwise, false.
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Last(DateOnly, DayOfWeek)

Gets a date representing the final occurence of a specified day of the week in the current month.

Declaration
public static DateOnly Last(this DateOnly value, DayOfWeek dayOfWeek)
Parameters
Type Name Description
DateOnly value

The current date.
DayOfWeek dayOfWeek

The day of the week.
Returns
Type Description
DateOnly

A representing the final occurence of dayOfWeek.
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LastDayOfMonth(DateOnly)

Gets a date representing the last day of the current month.

Declaration
public static DateOnly LastDayOfMonth(this DateOnly value)
Parameters
Type Name Description
DateOnly value

The current date.
Returns
Type Description
DateOnly

A representing the last day of the current month.
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Next(DateOnly, DayOfWeek)

Gets a date representing the next occurence of a specified day of the week in the current month.

Declaration
public static DateOnly Next(this DateOnly value, DayOfWeek dayOfWeek)
Parameters
Type Name Description
DateOnly value

The current date.
DayOfWeek dayOfWeek

The day of the week.
Returns
Type Description
DateOnly

A representing the next occurence of dayOfWeek.
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ToUnixTimeMilliseconds(DateOnly, TimeOnly)

Returns the number of milliseconds that have elapsed since 1970-01-01T00:00:00.000Z.

Declaration
public static long ToUnixTimeMilliseconds(this DateOnly value, TimeOnly time)
Parameters
Type Name Description
DateOnly value

The current date.
TimeOnly time

A reference time to use with the current date.
Returns
Type Description
System.Int64

The number of milliseconds that have elapsed since 1970-01-01T00:00:00.000Z.
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ToUnixTimeSeconds(DateOnly, TimeOnly)

Returns the number of seconds that have elapsed since 1970-01-01T00:00:00.000Z.

Declaration
public static long ToUnixTimeSeconds(this DateOnly value, TimeOnly time)
Parameters
Type Name Description
DateOnly value

The current date.
TimeOnly time

A reference time to use with the current date.
Returns
Type Description
System.Int64

The number of seconds that have elapsed since 1970-01-01T00:00:00.000Z.