No, that AddToFolderFields parameter only updates the hidden message that
stores the custom properties definitions in teh parent folder. It does not
matter how many item you have in that folder.
You can look at that mesage with outlookSpy: go to that folder, click
IMAPIFolder on the OutlookSpy toolbar, go to the "Associated Contents" tab,
find the message with PR_MESSAGE_CLASS = IPC.MS.REN.USERFIELDS, open that
message, look at the PR_USERFIELDS property.

--
Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool
-
"Coffee guy" wrote in message
...
Hi Dmitry,

Can you point me to the specs where the 64k limit is explained. I'm in a
similar situation with user properties and need to understand better how
that
works. If I create 15 properties on the folder (3rd parameter is true),
does
that mean there are 15 mappings per AppointmentItem limit of approx. 4333
items? What if I set the 3rd param to false?

"Dmitry Streblechenko" wrote:

Do you have a predefined set of user proeprties or do you create them
dynamically based on some criteria/
Keep in mind that tehre is a 65,000 limit on the number of named proeprty
mappings per store.
Once you reach that limit, no new named proeprty can be created, no
matter
whether you add it to the folder fields or not.

--
Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool
-