The DistinguishedFolderIdType class identifies Microsoft Exchange Server folders that can be referenced by name. If you do not use this class, you must use the FolderIdType class to identify a folder.
public class DistinguishedFolderIdType : BaseFolderIdType
A DistinguishedFolderIdType object resolves to a FolderIdType object on the Exchange server.
Any public static
in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.