计算两个日期间的工作日

计算两个日期间的工作日 本示例的功能是如何计算给定的两个日期之间的工作日，你可以选择是否将星期六 或星期日也包括进去。同时本程序还允许你可入一些假期，从而在计算时将这些假 期排除在外。 函数： Public Function BusinessDateDiff(ByVal dDate1 As Date, ByVal dDate2 As Date) As Long 该函数的功能是计算两个日期（dDate1和dDate2）之间的工作日。下面的这些属性 允许你对计算实施控制，告诉程序如何进行计算。 属性 Public IncludeSaturdays As Boolean 当值为真，计算时将包括星期六，否则将星期六排除在外。 Public IncludeSundays As Boolean 当值为真，计算时将包括星期日，否则将星期日排除在外。 Public Property Let IncludeFirstDate(bInc As Boolean) Public Property Get IncludeFirstDate() As Boolean 在默认情况下，BusinessDateDiff函数会将你输入的起始日包括在计算中，但不包 括你输入的终止日。将该属性值设为假，计算时就不包括你输入的起始日。 Public Property Let IncludeLastDate(bInc As Boolean) Public Property Get IncludeLastDate() As Boolean 在默认情况下，BusinessDateDiff函数不包括你输入的最后一天。将该属性值设为 真，程序把你输入的最后一天包括在计算中。 方法 Public Sub HolidayAdd(dHoliday As Date) 添加一个假期列表，以便在计算时排除这些假期。在默认情况下，没有添加任何假 期。 Public Sub HolidayRemove(dHoliday As Date) 从假期列表移除假期 Public Sub HolidayClear() 清除全部假期列表 代码清单 首先建立一个新的类模块，名为cBusinessDates，将下面的代码粘贴进去。 Option Explicit Public IncludeSaturdays As Boolean Public IncludeSundays As Boolean Private mbIncludeFirstDate As Boolean Private mbIncludeLastDate As Boolean Private Holidays As New Collection Public Sub HolidayAdd(dHoliday As Date) On Error Resume Next Holidays.Add dHoliday, "D" & dHoliday If Err Then Err.Clear End If End Sub Public Sub HolidayRemove(dHoliday As Date) On Error Resume Next Holidays.Remove "D" & dHoliday If Err Then Err.Clear End If End Sub Public Sub HolidayClear() Dim x As Long For x = 1 To Holidays.Count Holidays.Remove 1 Next End Sub Public Property Let IncludeFirstDate(bInc As Boolean) mbIncludeFirstDate = bInc End Property Public Property Let IncludeLastDate(bInc As Boolean) mbIncludeLastDate = bInc End Property Public Property Get IncludeFirstDate() As Boolean IncludeFirstDate = mbIncludeFirstDate End Property Public Property Get IncludeLastDate() As Boolean IncludeLastDate = mbIncludeLastDate End Property '该函数不把dDate2包含在计算中，如果dDate2是星期日，而你又选择了计算星期 日，该日期仍不计算在内。 Public Function BusinessDateDiff(ByVal dDate1 As Date, ByVal dDate2 As Date) As Long Dim dCurDate As Date Dim dLastDate As Date Dim dFirstDate As Date Dim lDayCount As Long Dim eDay As VbDayOfWeek Dim dHoliday As Variant '调整应将哪一个日期包括在计算中（第一个还是第二个） If IncludeFirstDate Then dFirstDate = dDate1 Else dFirstDate = dDate1 + 1 End If If IncludeLastDate Then dLastDate = dDate2 + 1 Else dLastDate = dDate2 End If '在所有日期中循环，并更新日期计数 dCurDate = dFirstDate Do While dCurDate <> dLastDate eDay = WeekDay(dCurDate) If IncludeSaturdays And eDay = vbSaturday Then lDayCount = lDayCount + 1 End If If IncludeSundays And eDay = vbSunday Then lDayCount = lDayCount + 1 End If If eDay >= vbMonday And eDay <= vbFriday Then lDayCount = lDayCount + 1 End If dCurDate = dCurDate + 1 Loop '根据假期调整日期计数 For Each dHoliday In Holidays '如果假期在你所输入的日期范围之内 If CDate(dHoliday) >= dFirstDate And CDate(dHoliday) <= dLastDate Then eDay = WeekDay(CDate(dHoliday)) If IncludeSaturdays And eDay = vbSaturday Then lDayCount = lDayCount - 1 End If If IncludeSundays And eDay = vbSunday Then lDayCount = lDayCount - 1 End If If eDay >= vbMonday And eDay <= vbFriday Then lDayCount = lDayCount - 1 End If End If Next BusinessDateDiff = lDayCount End Function Private Sub Class_Initialize() IncludeFirstDate = True IncludeLastDate = False IncludeSundays = False IncludeSaturdays = False End Sub