As you know, almost all the time this happens it's due to out of scope
objects or objects that have been garbage collected. No exceptions in your
code and if you step the code everything is instantiated and not Nothing?
Have you tried simplifying the code to handle only one folder and one Items
collection to make sure that works with how you're doing things?
What version of Outlook? What version of the PIA are you referencing? What
version of VS?
What code are you using, show a small piece that someone can look at for
your instantiations and for your adding event handlers and your event
handler signatures.
--
Ken Slovak
[MVP - Outlook]
http://www.slovaktech.com
Author: Professional Programming Outlook 2007.
Reminder Manager, Extended Reminders, Attachment Options.
http://www.slovaktech.com/products.htm
"Cedric" <Cedric[ at ]discussions.microsoft.com> wrote in message
news:FD4660BF-E009-48BF-AB4A-D895270F2B29[ at ]microsoft.com...
[Quoted Text] > Hello all,
>
> As I've already read about this issue, I know the title of my post may
> have
> made you grin.
> My add-in needs to track the activity of some folders. I know that under
> certain conditions, the Items events may not fire. This is why, in order
> to
> avoid my objects references getting eaten by the GC, I have:
> - recursively created a tree of objects named QFolderWatcher, whose
> purpose
> is to watch the activity of the outlook folders tree (or at least part of
> the
> tree)
> - included 2 variables in this class, named MyFolders and MyItems. When
> creating a new QFolderWatcher, I save in a private variable the
> MAPIFolder,
> and then put (VB):
> MyFolders = Folder.Folders
> MyItems = Folder.Items
>
> Both variables are declared WithEvents, and all my objects have cross
> references with:
> - QFolderWatcher.SubFolders =list(of QFolderWatcher) : the list of
> QFolderWatchers watching the current folder's subfolders
> - QFolderWatcher.Parent : the FolderWatcher that watches the MAPIFolder's
> parent folder.
>
> The strange thing is that both variables MyFolders and MyItems are created
> and initialized at the same place, and my application receives events from
> the folders, but nothing about its items.
>
>
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