Difference between contenttypeorder and uniquecontenttypeorder

Question

What is the difference between SPfolder.ContenttypeOrder and SPFolder.UniqueContentTypeOrder?

Why is sometimes UniqueContentTypeOrder null?

How to get content types attached to a folder that are visible to this folder and in order? I thought using UniqueContentTypeOrder, but sometimes it is null?

thanks

Answer 1

UniqueContentTypeOrder is used to define custom order for a folder. UniqueContentTypeOrder can be set to null to return to ContentTypeOrder (default). This means that when UniqueContentTypeOrder is null, you must return to ContentTypeOrder.

See http://msdn.microsoft.com/en-us/library/microsoft.sharepoint.spfolder.uniquecontenttypeorder(office.12).aspx and http://msdn.microsoft.com/en-us/library/microsoft .sharepoint.spfolder.contenttypeorder (v = office.12) .aspx for more information.