Visual Basic Programming Code Examples
Visual Basic > Date Time Code Examples
Adding a number of weekdays to a date
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Adding a number of weekdays to a date
The simple function adds a number of weekdays to a date.
'Purpose : Adds a number of weekdays to a specified date.
'Inputs : dtDate The starting date
' lNumDays The number of days to add.
'Outputs : The starting date plus the number of specified weekdays
'Notes : For Excel change the header to:
'
' Function WeekDayAdd(ByVal dtDate As Date, ByVal lNumDays As Long) As Date
' Dim lDaysAdded As Long, eWeekday As VbDayOfWeek
' Dim lAdd As Long
' Application.Volatile True
' On Error GoTo ErrFailed
'
' To use the function in worksheets
'Revisions :
Function WeekDayAdd(ByVal dtDate As Date, ByVal lNumDays As Long) As Date
Dim lDaysAdded As Long, eWeekday As VbDayOfWeek
Dim lAdd As Long
On Error GoTo ErrFailed
If lNumDays < 0 Then
lAdd = -1
Else
lAdd = 1
End If
Do While lDaysAdded <> lNumDays
dtDate = dtDate + lAdd
eWeekday = Weekday(dtDate)
If eWeekday > vbSunday And eWeekday < vbSaturday Then
lDaysAdded = lDaysAdded + lAdd
End If
Loop
WeekDayAdd = dtDate
Exit Function
ErrFailed:
Debug.Print Err.Description
Debug.Assert False
End Function
