public PropertySet CreatePropSet( EwsItemParts parts )
Public Function CreatePropSet ( parts As EwsItemParts ) As PropertySet
This is a helper method for advanced purposes. You can use it with DownloadItems(FolderId, ItemView, bool, PropertySet) and DownloadItem(ItemId, PropertySet) methods when you need to work directly with EWS Managed API types.
Most applications will not use PropertySet objects directly as they can use DownloadItems(FolderId, ItemView, bool, EwsItemParts) and DownloadItem(ItemId, EwsItemParts) overloads which hide PropertySet complexity from the developer.