VB.Net by API/System/Now
Версия от 16:40, 26 мая 2010; (обсуждение)
Now.DayOfWeek
Module Module1
Sub Main()
Dim DayOfWeek As Integer
DayOfWeek = Now.DayOfWeek
Select Case DayOfWeek
Case 1
Console.WriteLine("Sunday")
Case 2
Console.WriteLine("Monday")
Case 3
Console.WriteLine("Tuesday")
Case 4
Console.WriteLine("Wednesday")
Case 5
Console.WriteLine("Thursday")
Case 6
Console.WriteLine("Friday")
Case 7
Console.WriteLine("Saturday")
End Select
End Sub
End Module
Now.Ticks
Public Class Tester
Public Shared Sub Main
Dim ticksBefore As Long
Dim ticksAfter As Long
Dim tickSeconds As Double
ticksBefore = Now.Ticks
MsgBox("Press OK to see elapsed seconds")
ticksAfter = Now.Ticks
tickSeconds = (ticksAfter - ticksBefore) / 10000000.0
Console.WriteLine("Elapsed seconds: " & tickSeconds.ToString())
End Sub
End Class
Now.ToLongTimeString
Public Class Tester
Public Shared Sub Main
Console.WriteLine(Now.ToLongTimeString)
End Sub
End Class
Now.ToString
Imports System
Imports System.Data
Imports System.Windows.Forms
Imports System.Drawing
Imports System.Diagnostics
Imports System.Drawing.Printing
Imports System.ruponentModel
Public Class MainClass
Shared Sub Main()
Console.WriteLine(Now.ToString("h:mm:ss tt"))
End Sub
End Class
Now.ToUniversalTime
Public Class Tester
Public Shared Sub Main
Dim phaseDay As Double
Dim result As String
phaseDay = MoonPhase(Now.ToUniversalTime)
result = "UTC is now: " & _
Now.ToUniversalTime.ToString("u") & vbNewLine & vbNewLine
If (phaseDay < 0) Then
result &= "Approx days until new moon: " & _
(-phaseDay).ToString("F1")
Else
result &= "Approx days since new moon: " & _
phaseDay.ToString("F1")
End If
Console.WriteLine(result)
End Sub
Public Shared Function MoonPhase(ByVal dateUtc As Date) As Double
Dim days As Double = dateUtc.Subtract(#1/1/1600#).TotalDays
Dim cycles As Double = days * 0.03386319 - 12.5
Return Math.IEEERemainder(cycles, 1.0) * 29.53059
End Function
End Class