The GetPrevious method returns the previous object in the specified collection. It returns Nothing if no previous object exists, for example, if already positioned at the beginning of the collection.
Note To ensure correct operation of the GetFirst , GetLast , GetNext , and GetPrevious methods in a large collection, call GetFirst before calling GetNext on that collection, and call GetLast before calling GetPrevious. To ensure that you are always making the calls on the same collection, create an explicit variable that refers to that collection before entering the loop.
*expression * Required. An expression that returns one of the objects in the Applies To list.
The following Visual Basic for Applications example searches the subfolders of Inbox for a folder called MyPersonalEmails and displays a message to the user. If you do not have a subfolder called MyPersonalEmails in your Inbox folder, the example will display nothing.
Sub TestGetPrevious() Dim outApp As New Outlook.Application Dim nsp As Outlook.NameSpace Dim mpf As Outlook.MAPIFolder Dim mpfSubFolder As Outlook.MAPIFolder Dim flds As Outlook.Folders Dim idx As Integer Set nsp = outApp.GetNamespace("MAPI") Set mpf = nsp.GetDefaultFolder(olFolderInbox) Set flds = mpf.Folders Set mpfSubFolder = flds.GetLast Do While Not mpfSubFolder Is Nothing If mpfSubFolder.Name = "MyPersonalEmails" Then MsgBox "The folder was found." Exit Do End If Set mpfSubFolder = flds.GetPrevious Loop End Sub