ML,
I realize that, which is why I included the second two links. You did review
the two other links before you responded?
Both links provide a plethora of information & links on the proper ways to
avoid the security prompts. Which includes settings that need to be made by
your Exchange Server Administrator.
As your other thread suggests, you should be able to use WebDAV also.
Alternatively you could create a Web Service (that internally uses WebDAV)
that returns the list of contacts to your Windows program.
As I mentioned in the other thread, you might want to start here with the
following two sites:
Here is a good place to start on articles about using Outlook & .NET
(including Exchange Server).
http://www.microeye.com/resources/res_outlookvsnet.htm
For a discussion on selecting development technologies for Exchange Server,
start here:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/e2k3/e2k3/_techsel_intro.asp
I believe the second site (techsel_intro) eventually has links to Exchange
Server WebDAV samples, post if you need help finding them.
Hope this helps
Jay