Hey all, I receive the following error:
Unable to cast COM object of type 'System.__ComObject' to interface type
'Microsoft.Office.Interop.Outlook._MailItem'.
I will demonstrate the 3 main attempts (of the trillion I've tried). :-/

I want to display mail in inbox folder with code. I am using
MailItem.Display() method. When i use mailitem.Display() method ,
mailitem inspector form is being shown. But mailitem body doesn't
visible. But when i right click on mail inspector form and click "Edit

I have already sent such message in another group, but there was no any
answer to it. I suppose this group is more convininent for such task
I would like to ask if someone has developed a simple registry of incomming
inquiries from customers.

I am developing, using vsto 3.0, an outlook 2007 add-in that works with a
different pst file (not the default pst file). The default pst file (call it
file A) is also my primary pst file. When I set the webview for a given
folder in my other pst file (call it file B), the webview ...

Hi, back with another newbie question. I'm writing an add-in for Outlook 2003
in VC++. I'm trying to move a message I've accessed by using the
Explorer->get_Selection method to the "Deleted Items" folder, but I'm running
into trouble. *Part* (hopefully all?) of the problem is I ...

I've created an Outlook 2007 add-in via VS2008.
In the ThisAddIn_Startup method I attach a SelectionChangeEventHandler to
the Active Explorer selection change event via the following:
           this.Application.ActiveExplorer().SelectionChange += new

I have written addin for outlook 2000. I catching mapi on onOpen()
callback and modify mail content. Then i show mail with
MapiSession::showForm() method. Till this point everything is ok.
  But when i click Reply or Forward on mail form it gives error like

Hello NG,
I am new to VSTO and Outlook 2007 Addins,
Well what i am trying, is to use a Outlook 2007-Add-In with
.Net Framework 2.0.

One of out customer installed multiple add-ins.
Our older version worked on his machine but not the newer version.
Disable or remove all other add-ins from Outlook add-in manager, re-enable
or reinstall our add-in won't work.

Hello NG,
I am very new to Outlook2007 and VSTO  (Visual Studio 2008)
in a mail i have a user defined Named Property "UID"
the DASL is

The problem only occurs when user click the Outbox folder, then send an
Email. No problem if the folder is not selected.
The problem happens on Outlook 2007 and 2003. Not every computer will have
the problem.

I've VSTO addin for Outlook 2003.I need to interrupt
MailItem_AttachmentAdd event , save the attachement in temp folder ,
add the filepath of
saved attachment as link in message body of mailitem and remove

Hi, I wrote Outlook COM Add-in in 2003 using C# and since ages it has been
working fine in OL2003. We are in process on migrating to OL2007. I found
that my Add-in doesn't work on OL2007. Could anyone please tell me what are
the possiblities so that Add-in can't work on OL2007.

I need to delete add-in button from each outlook explorer when add-in is
going to disabled.Outlook will remain open.and again when i will connect then
it should connect addin button on each outlook explorer.i can add button over
every explorere but facing problem in deleteing ...

I am facing a small problem here... I have my recurrence range group where I
can select where or how my recurrence ends ("no end date", "end after <x>
occurrences" or end by <DATE>).
When Im populating my recurrence pattern object Outlook puts some default