|Outlook Developer Reference|
expression A variable that represents an Items object.
The SetColumns method is useful for iterating through the Items object. If you don't use this method, Microsoft Office Outlook must open each item to access the property. With the SetColumns method, Outlook only checks the properties that you have cached. Properties which are not cached are returned empty.
SetColumns cannot be used, and will cause an error, with any property that returns an object. It cannot be used with the following properties:
The ConversationIndex property cannot be cached using the SetColumns method. However, this property will not result in an error like the other properties listed above.
The following Visual Basic for Applications (VBA) example uses the Items collection to get the items in default Tasks folder, caches the Subject and DueDate properties and then displays the subject and due dates each in turn.
|Visual Basic for Applications|