 |
 | Home | Contact Us | FAQ | Search & Site Map | Link to Us |
 | Sign In | Join | Other 45 Sites in Network |
| HomeDiscussionsAccessExcelInfoPathOutlookPowerPointPublisherWordDirectoryUser Groups Related Topics Outlook ExpressInternet ExplorerWindowsMS Server ProductsMore Topics ... |
MS Office Forum / Outlook / Interop / September 2004EntryID unique?
Hello! Ive got a question concerning the EntryID of an object: Is every EntryID unique and wont be used even if the object was deleted? For example: object a - entryid 1 object a is deleted object b is created and gets entryid 1 So is every EntryID unique for any time? Furthermore I wonder if there is a difference between using EntryIDs with Outlook alone or in connection with Exchange Server? Thanks in advance! Andreas Yes, it should be unique. EntryID's will change in an Exchange mailbox if the item is moved or deleted. They don't change in a PST file. That's transport dependent. Exchange also provides short-term and long-term EntryID's, for a PST file you only get a long-term EntryID. So when using a MAPI table for example you would check for both EntryID's to make sure you get a valid result.  SignatureKen Slovak [MVP - Outlook] http://www.slovaktech.com Author: Absolute Beginner's Guide to Microsoft Office Outlook 2003 Reminder Manager, Extended Reminders, Attachment Options http://www.slovaktech.com/products.htm > Hello! > [quoted text clipped - 15 lines] > > Andreas > Yes, it should be unique. EntryID's will change in an Exchange mailbox if > the item is moved or deleted. They don't change in a PST file. That's > transport dependent. Exchange also provides short-term and long-term > EntryID's, for a PST file you only get a long-term EntryID. So when using a > MAPI table for example you would check for both EntryID's to make sure you > get a valid result. Thanks! Does this mean that there is no way to "track" an item from another application using its EntryID since if it is moved or deleted I wont find it under its EntryID? Thanks in advance! Correct. I usually store the original entry id in a user defined field and check on that so if EntryID changes my field remains the same. SignatureKen Slovak [MVP - Outlook] http://www.slovaktech.com Author: Absolute Beginner's Guide to Microsoft Office Outlook 2003 Reminder Manager, Extended Reminders, Attachment Options http://www.slovaktech.com/products.htm > > Yes, it should be unique. EntryID's will change in an Exchange mailbox if > > the item is moved or deleted. They don't change in a PST file. That's [quoted text clipped - 10 lines] > > Thanks in advance! |
Reply to this Message |
 Sign In
 Join
 My Latest Posts My Monitored Threads My Blog My Photo Gallery My Profile My Homepage Start New Thread Enable EMail Alerts Rate this Thread
|
©2009 Advenet LLC Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.