How to determine the workday prior to ReceivedTime? - vba

Question

The following code saves Outlook attachments and adds the date that the email was generated to the end of the name.
I am trying to add the previous workday.
Public Sub K_P3(itm As Outlook.MailItem)
Dim objAtt As Outlook.Attachment
Dim saveFolder As String
saveFolder = "W:XXXX\"
Dim dateformat As String
dateformat = Format(itm.ReceivedTime, "yyyy-mm-dd Hmm ")
For Each objAtt In itm.Attachments
objAtt.SaveAsFile saveFolder & _
Left(objAtt.FileName, InStrRev(objAtt.FileName, ".") - 1) & _
" " & dateformat & _
Mid(objAtt.FileName, InStrRev(objAtt.FileName, "."))
Next
End Sub

Answer 1

Try this:
dateformat = Format(application.workday(itm.ReceivedTime),-1), "yyyy-mm-dd") & _
Format(itm.ReceivedTime, " Hmm")
EDIT: forgot you were using Outlook:
dateformat = Format(Workday(itm.ReceivedTime,1), "yyyy-mm-dd Hmm")
Some code to (I think) mimic Excel's workday function:
Sub Tester()
Dim arrHolidays
arrHolidays = Array(#12/25/2019#) 'array of holidays
Debug.Print Workday(#12/26/2019#, -1) '12/25/2019
Debug.Print Workday(#12/26/2019#, -1, arrHolidays) '12/24/2019
End Sub
'Find the workday `days` ago or in the future starting from `dt`.
'Ignores weekends, and optionally also an array of dates passed to `arrHols`
Function Workday(dt As Date, ByVal days, Optional arrHols As Variant = Empty)
Dim rv, i, dy, delta, hol As Boolean
rv = dt
i = 0
delta = IIf(days < 0, -1, 1) 'what direction are we headed?
Do While i <> days
rv = rv + delta
dy = Weekday(rv, vbMonday) 'Monday=1
If dy <> 6 And dy <> 7 Then 'not a weekend?
'Int() below removes any time component from the date
If Not IsEmpty(arrHols) Then hol = InArray(Int(rv), arrHols)
If Not hol Then i = i + delta 'not a holiday?
End If
Loop
Workday = rv
End Function
'Is value `v` in the array `arr` ?
Function InArray(ByVal v, arr) As Boolean
Dim i As Long
If IsEmpty(arr) Then Exit Function
For i = LBound(arr) To UBound(arr)
If arr(i) = v Then
InArray = True
Exit Function
End If
Next i
End Function