Outlook link protocol - link to item when subject is not unique?   

I have a web app that returns all the messages created in the last week
from a series of public folders. I want each subject link in my display
to be an Outlook style link (outlook://) to open the message in
Outlook. This works for some messages and not for others. The problem
seems to be duplicate subjects? What reliable, unique URL way do I have
of creating Outlook links? (Not OWA.)

I see a reference to the EntryID method: outlook:entryId. However, when
I return all properties for a message, I don't see an EntryID field.  I
see several other fields such as id, uid, mid, message-id--none of
these access the message, however, when used in the outlook:entryId
format.

Thank you for sharing your experience and knowledge.

(I attempted to search the newsgroup for this solution, but did not
find the answer--I'm sure this has been asked a lot--so my apologies.)

date: 12 Jun 2006 14:29:29 -0700   author:   TroyWolf

Re: Outlook link protocol - link to item when subject is not unique?   

Hello,

the EntryID is stored as base64 coded value in the 
http://schemas.microsoft.com/mapi/proptag/xfff0102 property. I don't know if 
that will work with the outlook moniker. Haven't tried it yet.

Best regards,
Henning Krause

"TroyWolf"  wrote in message 
news:1150147769.048824.122550@c74g2000cwc.googlegroups.com...
>I have a web app that returns all the messages created in the last week
> from a series of public folders. I want each subject link in my display
> to be an Outlook style link (outlook://) to open the message in
> Outlook. This works for some messages and not for others. The problem
> seems to be duplicate subjects? What reliable, unique URL way do I have
> of creating Outlook links? (Not OWA.)
>
> I see a reference to the EntryID method: outlook:entryId. However, when
> I return all properties for a message, I don't see an EntryID field.  I
> see several other fields such as id, uid, mid, message-id--none of
> these access the message, however, when used in the outlook:entryId
> format.
>
> Thank you for sharing your experience and knowledge.
>
> (I attempted to search the newsgroup for this solution, but did not
> find the answer--I'm sure this has been asked a lot--so my apologies.)
>

date: Wed, 14 Jun 2006 19:48:01 +0200   author:   Henning Krause [MVP - Exchange]