Articolo
11/18/2011

DateAndTime Class

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The DateAndTime module contains the procedures and properties used in date and time operations.

Inheritance Hierarchy

System.Object
Microsoft.VisualBasic.DateAndTime

Namespace: Microsoft.VisualBasic
Assembly: Microsoft.VisualBasic (in Microsoft.VisualBasic.dll)

Syntax

'Declaration
<StandardModuleAttribute> _
Public NotInheritable Class DateAndTime

[StandardModuleAttribute]
public sealed class DateAndTime

The DateAndTime type exposes the following members.

Properties

	Name	Description
	DateString	Returns or sets a String value representing the current date according to your system.
	Now	Returns a Date value containing the current date and time according to your system.
	TimeOfDay	Returns or sets a Date value containing the current time of day according to your system.
	Timer	Returns a Double value representing the number of seconds elapsed since midnight.
	TimeString	Returns or sets a String value representing the current time of day according to your system.
	Today	Returns or sets a Date value containing the current date according to your system.

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Methods

	Name	Description
	DateAdd(DateInterval, Double, DateTime)	Returns a Date value containing a date and time value to which a specified time interval has been added.
	DateAdd(String, Double, Object)	Returns a Date value containing a date and time value to which a specified time interval has been added.
	DateDiff(DateInterval, DateTime, DateTime, FirstDayOfWeek, FirstWeekOfYear)	Returns a Long value specifying the number of time intervals between two Date values.
	DateDiff(String, Object, Object, FirstDayOfWeek, FirstWeekOfYear)	Returns a Long value specifying the number of time intervals between two Date values.
	DatePart(DateInterval, DateTime, FirstDayOfWeek, FirstWeekOfYear)	Returns an Integer value containing the specified component of a given Date value.
	DatePart(String, Object, FirstDayOfWeek, FirstWeekOfYear)	Returns an Integer value containing the specified component of a given Date value.
	DateSerial	Returns a Date value representing a specified year, month, and day, with the time information set to midnight (00:00:00).
	DateValue	Returns a Date value containing the date information represented by a string, with the time information set to midnight (00:00:00).
	Day	Returns an Integer value from 1 through 31 representing the day of the month.
	Equals(Object)	Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
	GetHashCode	Serves as a hash function for a particular type. (Inherited from Object.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	Hour	Returns an Integer value from 0 through 23 representing the hour of the day.
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	Minute	Returns an Integer value from 0 through 59 representing the minute of the hour.
	Month	Returns an Integer value from 1 through 12 representing the month of the year.
	MonthName	Returns a String value containing the name of the specified month.
	Second	Returns an Integer value from 0 through 59 representing the second of the minute.
	TimeSerial	Returns a Date value representing a specified hour, minute, and second, with the date information set relative to January 1 of the year 1.
	TimeValue	Returns a Date value containing the time information represented by a string, with the date information set to January 1 of the year 1.
	ToString	Returns a string that represents the current object. (Inherited from Object.)
	Weekday	Returns an Integer value containing a number representing the day of the week.
	WeekdayName	Returns a String value containing the name of the specified weekday.
	Year	Returns an Integer value from 1 through 9999 representing the year.

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Remarks

This module supports the Visual Basic language keywords and run-time library members that get the current date or time, perform date calculations, return a date or time, set the date or time, or time the duration of a process.

Examples

This example uses the Today property to return the current system date.

Dim thisDate As Date
thisDate = Today

Version Information

Silverlight

Supported in: 5, 4, 3

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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