Article ID: 230120
Article Last Modified on 11/23/2006
APPLIES TO
- Microsoft Outlook 2000 Standard Edition
This article was previously published under Q230120
SYMPTOMS
You use the Count property to determine the number of appointments in a collection, but the number returned is 2147843647.
CAUSE
You used the IncludeRecurrences method in the Outlook object model to retrieve recurring appointments. If any of the recurring appointments do not have a specific end date, they may recur indefinitely. Therefore, the collection of appointments is infinitely large. 2,147,843,647 is the largest number of items a collection can contain. If you then use the Restrict method to limit the number of appointments to those within a certain date range, the Count property is not updated to reflect the number of items in the smaller collection.
RESOLUTION
The collection actually contains the correct number of appointments. Therefore, if you are looping through all of the appointments, do not use the For I = 1 to Items.Count approach. Instead, use the For..Each construct to loop through the items.
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The following Automation subroutine illustrates both the behavior and the approach to correct the behavior. Be sure to set a reference to the Microsoft Outlook 9.0 Object Library before running this code.
Sub NumberOf1999Appts()
Dim oOutApp As Outlook.Application
Dim oNS As Outlook.NameSpace
Dim CalFolder As Outlook.MAPIFolder
Dim CalItems As Outlook.Items
Dim ResItems As Outlook.Items
Dim sFilter As String
Dim iNumRestricted As Integer
Dim itm As Object
Set oOutApp = New Outlook.Application
Set oNS = oOutApp.GetNamespace("MAPI")
' Use the default calendar folder
Set CalFolder = oNS.GetDefaultFolder(olFolderCalendar)
' Get all of the appointments in the folder
Set CalItems = CalFolder.Items
' Sort all of the appointments based on the start time
CalItems.Sort "[Start]"
' Make sure to include all of the recurrences
CalItems.IncludeRecurrences = True
'create the Restrict filter to return all 1999 appointments
sFilter = "[Start] >= '" & Format("1/1/1999 12:00am", _
"ddddd h:nn AMPM") & "'" & " And [End] < '" & _
Format("1/1/2000 12:00am", "ddddd h:nn AMPM") & "'"
' Apply the filter to the collection
Set ResItems = CalItems.Restrict(sFilter)
' This will return 2147843647 if any recurring appointment does not have an end date
MsgBox ResItems.Count
iNumRestricted = 0
'Loop through the items in the collection. This will not loop infinitely.
For Each itm In ResItems
iNumRestricted = iNumRestricted + 1
Next
' Display the actual number of appointments in 1999.
MsgBox iNumRestricted
Set itm = Nothing
Set ResItems = Nothing
Set CalItems = Nothing
Set CalFolder = Nothing
Set oNS = Nothing
Set oOutApp = Nothing
End Sub
REFERENCES
For additional information about using the Restrict method, please see the following article in the Microsoft Knowledge Base:
201081 OL2000: Using Find and Restrict to Retrieve Items
For additional information about available resources and answers to commonly asked questions about Microsoft Outlook 2000 solutions, refer to the following article in the Microsoft Knowledge Base:
146636 OL2000: Questions About Custom Forms and Outlook Solutions
Additional query words: OutSol OutSol2000 vbscript
Keywords: kbbug kbprogramming KB230120
