Dmitry, thank you for your reply.
At present, I want to limit my small application to non-Exchange
environments. Also, I probably need to detect Outlook version (2000/XP/2003
would be the versions). I have great troubles with finding and understanding
the documentation of Outlook, compared with other Office products. I will
have to check out your website.
I'm finding some problems distinguishing properties for (for example)
AddressBook that are Exchange-only vs single-user (not Exchange-connected),
such as Outlook.AddressEntry.Manager
Right now, my crude way to see if the user's Outlook is NOT
Exchange-connected is to check the registry using a simple .NET routine
based on System.Diagnostics and Microsoft.Win32
ReadRegistry(Registry.LocalMachine, "SOFTWARE\Microsoft\Exchange\Exchange
Provider", "(Default)", Value)
and just check the value it returns.
--
Ian Thomas

"Dmitry Streblechenko" wrote in message
...
On the Extended MAPI level, you can look at the PR_MDB_PROVIDER propperty.
I am not sure I unxdderstand why you want to make a distinction - for all
practical purposes, caches Exchange mode is not at all different from PST.

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

"gxdata" wrote in message
...
I can't locate any objects that will let me know whether Exchange is / can
be connected to Outlook 2003.
I want to deal only with a single-user (ie, not / never connected to
Exchange), so that I know to use local Contacts folders and not to use
offline or other Exchange-type addresslists etc.
I'm using VB.NET but anything that points me to a solution in VBA or .NET
would be much appreciated.

--
IL Thomas