VB.Net by API/System/Date

Date.AddDays

  
Public Class Tester
    Public Shared Sub Main
        
        Dim rightNow As Date = Now
        Console.WriteLine("RightNow: " & rightNow.ToString)
        Console.WriteLine("RightNow.AddYears(2): " & rightNow.AddYears(2))
        Console.WriteLine("RightNow.AddMonths(3): " & rightNow.AddMonths(3))
        Console.WriteLine("RightNow.AddDays(4): " & rightNow.AddDays(4))
    End Sub
End Class

Date.AddMilliseconds

  
Public Class Tester
    Public Shared Sub Main
        
        Dim rightNow As Date = Now
        Console.WriteLine("RightNow: " & rightNow.ToString)
        " ----- Add time values.
        Console.WriteLine("RightNow.AddHours(5): " & rightNow.AddHours(5))
        Console.WriteLine("RightNow.AddMinutes(6): " & rightNow.AddMinutes(6))
        Console.WriteLine("RightNow.AddSeconds(7): " & rightNow.AddSeconds(7))
        Console.WriteLine("RightNow.AddMilliseconds(8000): " & rightNow.AddMilliseconds(8000))
    End Sub
End Class

Date.AddMonths

  
Public Class Tester
    Public Shared Sub Main
        
        Dim rightNow As Date = Now
        Console.WriteLine("RightNow: " & rightNow.ToString)
        Console.WriteLine("RightNow.AddYears(2): " & rightNow.AddYears(2))
        Console.WriteLine("RightNow.AddMonths(3): " & rightNow.AddMonths(3))
        Console.WriteLine("RightNow.AddDays(4): " & rightNow.AddDays(4))
    End Sub
End Class

Date.AddYears

  
 
public class Test
   public Shared Sub Main
        Dim Expiration As Date
        Dim NewExpiration As Date
        Expiration = #1/1/2005#
        Expiration.AddYears(3)
        NewExpiration = Expiration.AddYears(3)
        Console.WriteLine("The new expiration date is: " & NewExpiration)
   End Sub
End class

Date.DayOfYear

  
Imports System
Public Class MainClass
    Shared Sub Main()
        Dim dteData As Date
        "Get the current date and time
        dteData = Now
        "Display the various properties
        System.Console.WriteLine("Month: " & dteData.Month)
        System.Console.WriteLine("Day: " & dteData.Day)
        System.Console.WriteLine("Year: " & dteData.Year)
        System.Console.WriteLine("Hour: " & dteData.Hour)
        System.Console.WriteLine("Minute: " & dteData.Minute)
        System.Console.WriteLine("Second: " & dteData.Second)
        System.Console.WriteLine("Day of week: " & dteData.DayOfWeek)
        System.Console.WriteLine("Day of year: " & dteData.DayOfYear)
    End Sub
End Class

Date.Millisecond

  
Public Class Tester
    Public Shared Sub Main
        Dim rightNow As Date = Now
        Dim hourNow As Integer = rightNow.Hour
        Dim minuteNow As Integer = rightNow.Minute
        Dim secondNow As Integer = rightNow.Second
        Dim millisecondNow As Integer = rightNow.Millisecond
        Dim results As String = String.Format( _
           "Hour: {1}{0}Minute: {2}{0}Second: " & _
           "{3}{0}Millisecond: {4}", vbNewLine, _
           hourNow, minuteNow, secondNow, millisecondNow)
        Console.WriteLine(results)

    End Sub
End Class

Date.op_Subtraction

  
public class Test
   public Shared Sub Main
        Dim date1 As Date = #7/20/2004#
        Dim date2 As Date = #8/7/2004#
        Dim elapsed_time As TimeSpan
        elapsed_time = Date.op_Subtraction(date2, date1)
        Console.WriteLine(elapsed_time.Days.ToString)
   End Sub
End class

Date.Parse

  
 
Public Class Tester
    Public Shared Sub Main
        Dim testDate As String
        Dim results As New System.Text.StringBuilder
        " ----- Test an invalid date.
        testDate = "Febtember 43, 2007"
        If (IsDate(testDate) = True) Then _
           results.AppendLine(Date.Parse(testDate).ToString)
        Console.WriteLine(results.ToString())
    End Sub
End Class

Date.ToLongDateString

  
Public Class Tester
    Public Shared Sub Main
        Dim rightNow As Date = Now
        Dim result As New System.Text.StringBuilder
        result.AppendLine("""Now""...")
        result.Append("ToString: ").AppendLine(rightNow.ToString)
        result.Append("ToLongDateString: ")
        result.AppendLine(rightNow.ToLongDateString)
        result.Append("ToShortDateString: ")
        result.AppendLine(rightNow.ToShortDateString)
        result.Append("ToLongTimeString: ")
        result.AppendLine(rightNow.ToLongTimeString)
        result.Append("ToShortTimeString: ")
        result.AppendLine(rightNow.ToShortTimeString)
        result.Append("ToUniversalTime: ")
        result.AppendLine(rightNow.ToUniversalTime)
        result.AppendLine()
        Console.WriteLine(result.ToString)
    End Sub
End Class

Date.ToLongTimeString

  
Public Class Tester
    Public Shared Sub Main
        Dim rightNow As Date = Now
        Dim result As New System.Text.StringBuilder
        result.AppendLine("""Now""...")
        result.Append("ToString: ").AppendLine(rightNow.ToString)
        result.Append("ToLongDateString: ")
        result.AppendLine(rightNow.ToLongDateString)
        result.Append("ToShortDateString: ")
        result.AppendLine(rightNow.ToShortDateString)
        result.Append("ToLongTimeString: ")
        result.AppendLine(rightNow.ToLongTimeString)
        result.Append("ToShortTimeString: ")
        result.AppendLine(rightNow.ToShortTimeString)
        result.Append("ToUniversalTime: ")
        result.AppendLine(rightNow.ToUniversalTime)
        result.AppendLine()
        Console.WriteLine(result.ToString)
    End Sub
End Class

Date.ToOADate

  
public class Test
   public Shared Sub Main
        Dim D As Date = Now()
        Dim F As Double = D.ToOADate()
        Console.WriteLine(F)
   End Sub
End class

Date.ToShortDateString

  
Public Class Tester
    Public Shared Sub Main
        Dim rightNow As Date = Now
        Dim result As New System.Text.StringBuilder
        result.AppendLine("""Now""...")
        result.Append("ToString: ").AppendLine(rightNow.ToString)
        result.Append("ToLongDateString: ")
        result.AppendLine(rightNow.ToLongDateString)
        result.Append("ToShortDateString: ")
        result.AppendLine(rightNow.ToShortDateString)
        result.Append("ToLongTimeString: ")
        result.AppendLine(rightNow.ToLongTimeString)
        result.Append("ToShortTimeString: ")
        result.AppendLine(rightNow.ToShortTimeString)
        result.Append("ToUniversalTime: ")
        result.AppendLine(rightNow.ToUniversalTime)
        result.AppendLine()
        Console.WriteLine(result.ToString)
    End Sub
End Class

Date.ToShortTimeString

  
Public Class Tester
    Public Shared Sub Main
        Dim rightNow As Date = Now
        Dim result As New System.Text.StringBuilder
        result.AppendLine("""Now""...")
        result.Append("ToString: ").AppendLine(rightNow.ToString)
        result.Append("ToLongDateString: ")
        result.AppendLine(rightNow.ToLongDateString)
        result.Append("ToShortDateString: ")
        result.AppendLine(rightNow.ToShortDateString)
        result.Append("ToLongTimeString: ")
        result.AppendLine(rightNow.ToLongTimeString)
        result.Append("ToShortTimeString: ")
        result.AppendLine(rightNow.ToShortTimeString)
        result.Append("ToUniversalTime: ")
        result.AppendLine(rightNow.ToUniversalTime)
        result.AppendLine()
        Console.WriteLine(result.ToString)
    End Sub
End Class

Date.ToString

  
Public Class Tester
    Public Shared Sub Main
        Dim rightNow As Date = Now
        Dim result As New System.Text.StringBuilder
        result.AppendLine("""Now""...")
        result.Append("ToString: ").AppendLine(rightNow.ToString)
        result.Append("ToLongDateString: ")
        result.AppendLine(rightNow.ToLongDateString)
        result.Append("ToShortDateString: ")
        result.AppendLine(rightNow.ToShortDateString)
        result.Append("ToLongTimeString: ")
        result.AppendLine(rightNow.ToLongTimeString)
        result.Append("ToShortTimeString: ")
        result.AppendLine(rightNow.ToShortTimeString)
        result.Append("ToUniversalTime: ")
        result.AppendLine(rightNow.ToUniversalTime)
        result.AppendLine()
        Console.WriteLine(result.ToString)
    End Sub
End Class

Date.ToUniversalTime

  

Public Class Tester
    Public Shared Sub Main
        Dim rightNow As Date = Now
        Dim result As New System.Text.StringBuilder
        result.AppendLine("""Now""...")
        result.Append("ToString: ").AppendLine(rightNow.ToString)
        result.Append("ToLongDateString: ")
        result.AppendLine(rightNow.ToLongDateString)
        result.Append("ToShortDateString: ")
        result.AppendLine(rightNow.ToShortDateString)
        result.Append("ToLongTimeString: ")
        result.AppendLine(rightNow.ToLongTimeString)
        result.Append("ToShortTimeString: ")
        result.AppendLine(rightNow.ToShortTimeString)
        result.Append("ToUniversalTime: ")
        result.AppendLine(rightNow.ToUniversalTime)
        result.AppendLine()
        Console.WriteLine(result.ToString)
    End Sub
End Class

New Date(Int year, Int month, Int day)

  

Public Class Tester
    Public Shared Sub Main
        Dim thirdOfJuly As Date = #7/3/1776 11:59:59 PM#
        Dim fourthOfJuly As New Date(1776, 7, 4)
        Dim inTheMorning As New Date(1776, 7, 4, 9, 45, 30)
        Console.WriteLine( _
           "The 3rd and 4th of July, 1776..." & _
           vbNewLine & vbNewLine & _
           "#7/3/1776 11:59:59 PM# ... " & _
           thirdOfJuly.ToString & vbNewLine & _
           "New Date(1776, 7, 4) ... " & _
           fourthOfJuly.ToString & vbNewLine & _
           "New Date(1776, 7, 4, 9, 45, 30) ... " & _
           inTheMorning.ToString)
    End Sub
End Class

New Date(Int year, Int month, Int day, Int hour, Int minute)

  
Public Class Tester
    Public Shared Sub Main
        Dim thirdOfJuly As Date = #7/3/1776 11:59:59 PM#
        Dim fourthOfJuly As New Date(1776, 7, 4)
        Dim inTheMorning As New Date(1776, 7, 4, 9, 45, 30)
        Console.WriteLine( _
           "The 3rd and 4th of July, 1776..." & _
           vbNewLine & vbNewLine & _
           "#7/3/1776 11:59:59 PM# ... " & _
           thirdOfJuly.ToString & vbNewLine & _
           "New Date(1776, 7, 4) ... " & _
           fourthOfJuly.ToString & vbNewLine & _
           "New Date(1776, 7, 4, 9, 45, 30) ... " & _
           inTheMorning.ToString)
    End Sub
End Class