Working with Date and Time VB.Net

By Anonymous -
VB.NET's DateTime structure represents an instant in time which is commonly expressed as a particular date and time of the day. It's a part of your daily life while creating your applications which makes it easy for you to manipulate system's date and time. In this article I'll be showing you the commonly used properties and methods and example usage of the Date and Time in VB.Net.

Use the Date data type to contain date values, time values, or date and time values. The default value of Date is 0:00:00 (midnight) on January 1, 0001. You can get the current date and time from the DateAndTime class.

DateTime Properties

The table below shows some of the commonly used properties of the DateTime Structure:
PropertyDescription
DateGets the date component of this instance.
DayGets the day of the month represented by this instance.
DayOfWeekGets the day of the week represented by this instance.
DayOfYearGets the day of the year represented by this instance.
HourGets the hour component of the date represented by this instance.
KindGets a value that indicates whether the time represented by this instance is based on local time, Coordinated Universal Time (UTC), or neither.
MillisecondGets the milliseconds component of the date represented by this instance.
MinuteGets the minute component of the date represented by this instance.
MonthGets the month component of the date represented by this instance.
NowGets a DateTime object that is set to the current date and time on this computer, expressed as the local time.
SecondGets the seconds component of the date represented by this instance.
TicksGets the number of ticks that represent the date and time of this instance.
TimeOfDayGets the time of day for this instance.
TodayGets the current date.
UtcNowGets a DateTime object that is set to the current date and time on this computer, expressed as the Coordinated Universal Time (UTC).
YearGets the year component of the date represented by this instance.


DateTime Methods

The table below shows the commonly used Methods of the DateTime Structure.
Method NameDescription
Public Function Add ( value As TimeSpan ) As DateTime Returns a new DateTime that adds the value of the specified TimeSpan to the value of this instance.
Public Function AddDays ( value As Double ) As DateTime Returns a new DateTime that adds the specified number of days to the value of this instance.
Public Function AddHours ( value As Double ) As DateTime Returns a new DateTime that adds the specified number of hours to the value of this instance.
Public Function AddMinutes ( value As Double ) As DateTime Returns a new DateTime that adds the specified number of minutes to the value of this instance.
Public Function AddMonths ( months As Integer ) As DateTime Returns a new DateTime that adds the specified number of months to the value of this instance.
Public Function AddSeconds ( value As Double ) As DateTime Returns a new DateTime that adds the specified number of seconds to the value of this instance.
Public Function AddYears ( value As Integer ) As DateTime Returns a new DateTime that adds the specified number of years to the value of this instance.
Public Shared Function Compare ( t1 As DateTime, t2 As DateTime ) As Integer Compares two instances of DateTime and returns an integer that indicates whether the first instance is earlier than, the same as, or later than the second instance.
Public Function CompareTo ( value As DateTime ) As Integer Compares the value of this instance to a specified DateTime value and returns an integer that indicates whether this instance is earlier than, the same as, or later than the specified DateTime value.
Public Function Equals ( value As DateTime ) As Boolean Returns a value indicating whether the value of this instance is equal to the value of the specified DateTime instance.
Public Shared Function Equals ( t1 As DateTime, t2 As DateTime ) As Boolean Returns a value indicating whether two DateTime instances have the same date and time value.
Public Overrides Function ToString As String Converts the value of the current DateTime object to its equivalent string representation.


DateTime Methods Example

The following snippet shows some of the DateTime Methods used in the DateTime Structure. 
Public Sub DateTimeMethods()
        Debug.Print("Today is: " & Now)
        Debug.Print("Adds 1 Day to Current date: " & Now.AddDays(1))
        Debug.Print("Adds 1 Hour to Current Time: " & Now.AddHours(1))
        Debug.Print("Adds 1 Minute to Current Time: " & Now.AddMinutes(1))
        Debug.Print("Adds 1 Second to Current Time: " & Now.AddSeconds(1))
End Sub

Output

The above snippet should print the following. 
Today is: 9/6/2014 11:54:31 AM
Adds 1 Day to Current date: 9/7/2014 11:54:31 AM
Adds 1 Hour to Current Time: 9/6/2014 12:54:31 PM
Adds 1 Minute to Current Time: 9/6/2014 11:55:31 AM
Adds 1 Second to Current Time: 9/6/2014 11:54:32 AM

Formatting Date and Time

See formatting Date and Time tutorial here...

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