242 lines
8.6 KiB
VB.net
242 lines
8.6 KiB
VB.net
Public Class cFeiertage
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Private _Year As Integer
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Private _Ostern As Date
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''' <summary>
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''' Initialisiert die Feiertags-Klasse für das aktuelle Jahr
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''' </summary>
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Public Sub New()
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_Year = Now.Year
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End Sub
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''' <summary>
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''' Initialisiert die Feiertags-Klasse für das angegebene Jahr
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''' </summary>
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Public Sub New(ByVal Year As Integer)
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_Year = Year
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End Sub
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''' <summary>
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''' Gibt das Datum für den Ostersonntag zurück.
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''' </summary>
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Public ReadOnly Property Ostersonntag_OLD() As Date
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Get
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If _Ostern.Ticks = 0 Then
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' Datum des ersten Vollmondes nach Frühlingsanfang
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Dim a As Integer = _Year Mod 19
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Dim b As Integer = _Year Mod 4
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Dim c As Integer = _Year Mod 7
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Dim M As Integer = Val(((8 * Val(_Year / 100) + 13) / 25) - 2)
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Dim s As Integer = Val(_Year / 100) - Val(_Year / 400) - 2
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M = (15 + s - M) Mod 30
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Dim N As Integer = (6 + s) Mod 7
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Dim d As Integer = (M + 19 * a) Mod 30
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If d = 29 Then
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d = 28
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ElseIf d = 28 Then
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If (_Year Mod 19) > 10 Then d = 27
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End If
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Dim e As Integer = (2 * b + 4 * c + 6 * d + N) Mod 7
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' Ostersonntag
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_Ostern = New DateTime(_Year, 3, 21).AddDays(d + e + 1)
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End If
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Return _Ostern
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End Get
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End Property
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Public Function Ostersonntag() As Date
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Dim _month As Integer
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Dim _day As Integer
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Dim _moon As Integer
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Dim _epact As Integer
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Dim _sunday As Integer
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Dim _gold As Integer
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Dim _century As Integer
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Dim _corx As Integer
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Dim _corz As Integer
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' The Golden Number of the year in the 19 year Metonic Cycle:
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_gold = (_Year Mod 19) + 1
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' Calculate the Century:
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_century = (_Year \ 100) + 1
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' Number of years in which leap year was dropped in order
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' to keep in step with the sun:
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_corx = (3 * _century) \ 4 - 12
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' Special correction to syncronize Easter with moon's orbit:
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_corz = (8 * _century + 5) \ 25 - 5
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' Find Sunday:
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_sunday = (5 * _Year) \ 4 - _corx - 10
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' ^ evtl. long To prevent overflow at year 6554
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' Set Epact - specifies occurrence of full moon:
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_epact = (11 * _gold + 20 + _corz - _corx) Mod 30
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If _epact < 0 Then
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_epact += 30
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End If
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If (((_epact = 25) AndAlso (_gold > 11)) OrElse (_epact = 24)) Then
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_epact += 1
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End If
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' Find Full Moon:
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_moon = 44 - _epact
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If _moon < 21 Then
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_moon += 30
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End If
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' Advance to Sunday:
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_moon += 7 - ((_sunday + _moon) Mod 7)
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If (_moon > 31) Then
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_month = 4
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_day = _moon - 31
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Else
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_month = 3
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_day = _moon
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End If
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Return New DateTime(_Year, _month, _day)
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End Function
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''' <summary>
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''' Gibt das Datum für den Ostermontag zurück.
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''' </summary>
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Public ReadOnly Property Ostermontag() As Date
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Get
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Return Ostersonntag.AddDays(1)
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End Get
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End Property
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''' <summary>
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''' Gibt das Datum für den BussUndBettag zurück.
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''' </summary>
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Public ReadOnly Property BussUndBettag() As Date
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Get
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Dim i As Long
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Dim VierterAdvent As Date
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For i = 24 To 1 Step -1
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If CDate(i & ".12." & _Year).ToString("ddd") = "So" Then
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VierterAdvent = CDate(i & ".12." & _Year).ToShortDateString
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Exit For
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End If
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Next i
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Dim ErsterAdvent As Date = VierterAdvent.AddDays(-21) ' DateAdd("d", -21, VierterAdvent)
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Return ErsterAdvent.AddDays(-11) ' DateAdd("d", -11, ErsterAdvent) 'BussUndBettag
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End Get
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End Property
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''' <summary>
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''' Gibt das Datum für den Karfreitag zurück.
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''' </summary>
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Public ReadOnly Property Karfreitag() As Date
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Get
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Return Ostersonntag.AddDays(-2)
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End Get
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End Property
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''' <summary>
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''' Gibt das Datum für den Pfingstsonntag zurück.
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''' </summary>
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Public ReadOnly Property Pfingstsonntag() As Date
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Get
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Return Ostersonntag.AddDays(49)
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End Get
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End Property
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''' <summary>
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''' Gibt das Datum für den Pfingsmontag zurück.
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''' </summary>
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Public ReadOnly Property Pfingstmontag() As Date
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Get
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Return Ostersonntag.AddDays(50)
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End Get
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End Property
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''' <summary>
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''' Gibt das Datum für Christi-Himmelfahrt zurück.
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''' </summary>
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Public ReadOnly Property Himmelfahrt() As Date
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Get
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Return Ostersonntag.AddDays(39)
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End Get
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End Property
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''' <summary>
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''' Gibt das Datum für Fronleichnam zurück.
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''' </summary>
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Public ReadOnly Property Fronleichnam() As Date
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Get
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Return Ostersonntag.AddDays(60)
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End Get
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End Property
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''' <summary>
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''' Gibt das Datum für Aschermittwoch zurück.
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''' </summary>
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Public ReadOnly Property Aschermittwoch() As Date
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Get
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Return Ostersonntag.AddDays(-46)
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End Get
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End Property
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Public Function isFeiertag(datum As Date, land As String) As Boolean
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If datum = CDate("01.01." & _Year) Then Return True
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If datum = CDate("06.01." & _Year) Then Return True
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If datum = CDate("15.08." & _Year) Then Return True
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If datum = CDate("01.11." & _Year) Then Return True
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If datum = CDate("25.12." & _Year) Then Return True
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If datum = CDate("26.12." & _Year) Then Return True
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If datum = Ostermontag Then Return True
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If datum = Ostersonntag() Then Return True
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If datum = Himmelfahrt Then Return True
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If datum = Pfingstmontag Then Return True
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If datum = Pfingstsonntag Then Return True
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If datum = Fronleichnam Then Return True
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Select Case land
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Case "AT"
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If datum = CDate("26.10." & _Year) Then Return True
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If datum = CDate("08.12." & _Year) Then Return True
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If datum = CDate("01.05." & _Year) Then Return True 'Staatsfeiertag
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Case "DE" 'BAYERN
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If datum = CDate("03.10." & _Year) Then Return True ' Tag der Deutschen Einheit
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' If datum = BussUndBettag Then Return True ' Buß- und Bettag '!!!!ABEWEICHEND --> kein Feiertag in BAYERN
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' If datum = CDate("08.08." & _Year) Then Return True ' Augsburger Friedensfest
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If datum = CDate("01.05." & _Year) Then Return True ' Maifeiertag
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If datum = Karfreitag Then Return True
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End Select
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Return False
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End Function
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'Public Function isFeiertag(datum As Date, land As String) As Boolean
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' If datum = CDate("01.01." & _Year) Then Return True
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' If datum = CDate("06.01." & _Year) Then Return True
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' If datum = CDate("15.08." & _Year) Then Return True
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' If datum = CDate("01.11." & _Year) Then Return True
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' If datum = CDate("25.12." & _Year) Then Return True
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' If datum = CDate("26.12." & _Year) Then Return True
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' If datum = Ostermontag Then MsgBox("Ostermontag") : Return True
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' If datum = Ostersonntag() Then MsgBox("Ostersonntag") : Return True
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' If datum = Himmelfahrt Then MsgBox("Himmelfahrt") : Return True
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' If datum = Pfingstmontag Then MsgBox("Pfingstmontag") : Return True
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' If datum = Pfingstsonntag Then MsgBox("Pfingstsonntag") : Return True
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' If datum = Fronleichnam Then MsgBox("Fronleichnam") : Return True
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' Select Case land
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' Case "AT"
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' If datum = CDate("26.10." & _Year) Then Return True
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' If datum = CDate("08.12." & _Year) Then Return True
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' If datum = CDate("01.05." & _Year) Then Return True 'Staatsfeiertag
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' Case "DE" 'BAYERN
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' If datum = CDate("03.10." & _Year) Then Return True ' Tag der Deutschen Einheit
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' If datum = BussUndBettag Then MsgBox("BussUndBettag") : Return True ' Buß- und Bettag '!!!!ABEWEICHEND
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' If datum = CDate("08.08." & _Year) Then Return True ' Augsburger Friedensfest
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' If datum = CDate("01.05." & _Year) Then Return True ' Maifeiertag
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' If datum = Karfreitag Then MsgBox("Karfreitag") : Return True
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' End Select
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' Return False
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'End Function
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End Class |