Deleting appointments from shared Outlook calendar - excel

Question

I want to clear a shared calendar.
I have a delete method that works in my Outlook calendar however it doesn't clear the shared calendar.
Private Sub DeleteAllAppointments()
Dim olkApp As Object, _
olkSession As Object, _
olkCalendar As Object, _
olkItem As Object, _
intIndex As Integer
Set olkApp = CreateObject("Outlook.Application")
Set olkSession = olkApp.Session
olkSession.Logon
Set olkCalendar = olkSession.GetDefaultFolder(olFolderCalendar)
For intIndex = olkCalendar.Items.Count To 1 Step -1
Set olkItem = olkCalendar.Items.Item(intIndex)
olkItem.Delete
Next
Set olkItem = Nothing
Set olkCalendar = Nothing
olkSession.Logoff
Set olkSession = Nothing
Set olkApp = Nothing
End Sub
This is where the method fails
Set olkCalendar = olkSession.GetDefaultFolder(olFolderCalendar)
Is this is a folder path issue?

Answer 1

This is how I did it.
Sub Delete_SharedCal_History()
DeleteCal_Appts "Office Calendar", "1/9/2001", "0:00:01", "12/31/2013", "23:59:59"
End Sub
Sub DeleteCal_Appts(sCalendarName As String, ap_dateStart As String, ap_startTime As String, ap_dateEnd As String, ap_endTime As String)
' Specified Shared Calendar - Delete all events in specified Date Range
' Author: Frank Zakikian
Dim objAppointment As AppointmentItem
Dim objAppointments As Items
Dim objNameSpace As NameSpace
Dim objRecip As Recipient
Dim nInc As Integer
Dim sFilter As Variant
Dim dtStartTime As Date, dtEndTime As Date
dtStartTime = CDate(ap_dateStart & " " & ap_timeStart)
dtEndTime = CDate(ap_dateEnd & " " & ap_timeEnd)
Set objNameSpace = Application.GetNamespace("MAPI")
'next line would be for use of personal calendar object..
'Set objAppointments = objNameSpace.GetDefaultFolder(olFolderCalendar)
Set objRecip = objNameSpace.CreateRecipient(sCalendarName)
objRecip.Resolve
'Debug.Print objRec.AddressEntry
Set objAppointments = objNameSpace.GetSharedDefaultFolder(objNameSpace.CreateRecipient("Akron Chambers Calendar"), olFolderCalendar).Items
sFilter = "[Start] > '" & Format(dtStartTime, "ddddd h:nn AMPM") & _
"' And [Start] < '" & Format(dtEndTime, "ddddd h:nn AMPM") & "'"
objAppointments.Sort "[Start]", False
Debug.Print "Total Items at begin: " & objAppointments.Count 'dev. fyi
Set objAppointment = objAppointments.Find(sFilter)
While TypeName(objAppointment) <> "Nothing"
'If MsgBox(objAppointment.Subject & vbCrLf & "Delete " & objRec.AddressEntry & " item now? ", vbYesNo, "Delete Calendar Item") = vbYes Then
objAppointment.Delete
nInc = nInc + 1
'End If
Set objAppointment = objAppointments.FindNext
Wend
MsgBox "Deleted " & nInc & " calendar items.", vbInformation, "Delete done"
Debug.Print "Total Items at finish: " & objAppointments.Count 'dev. fyi
Set objAppointment = Nothing
Set objAppointments = Nothing
End Sub

Answer 2

olkSession.GetDefaultFolder(olFolderCalendar) would retrieve your default Calendar folder. You need to either use olkSession.GetSharedDefaultFolder(someRecipient, olFolderCalendar) (where someRecipient is returned by olkSession.CreateRecipient) or open the appropriate store from the Namespace.Stores collection (assuming the delegate mailbox is already there) and call Store.GetDefaultFolder.