Problem while casting to AppointmentItem type

Hi,

I am using following code to create appointment items in Outlook:

private Microsoft.Office.Interop.Outlook.Application _Application;
_AppointmentItem oAppointmentItem =
(_AppointmentItem)m_Application.CreateItem(OlItemType.olAppointmentItem);


When i try to cast the object to _AppointmentItem type (2nd line)it throws
following exception:

Unable to cast COM object of type 'System.__ComObject' to interface type
'Microsoft.Office.Interop.Outlook._AppointmentItem'. This operation failed
because the QueryInterface call on the COM component for the interface with
IID '{00063033-0000-0000-C000-000000000046}' failed due to the following
error: No such interface supported (Exception from HRESULT: 0x80004002
(E_NOINTERFACE))

Any idea why this code doesn't work on some machines with Outlook2003?

Where is _Application instantiated?

Try using Outlook.AppointmentItem and see if that works. If not, do those
problem machines actually have the PIA's installed?

--
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


"kiranpatil1983" <kiranpatil1983.TakeThisOut@discussions.microsoft.com> wrote in message
news:F07FD800-054E-433E-9368-FFCA0DC17925@microsoft.com...
> Hi,
>
> I am using following code to create appointment items in Outlook:
>
> private Microsoft.Office.Interop.Outlook.Application _Application;
> _AppointmentItem oAppointmentItem =
> (_AppointmentItem)m_Application.CreateItem(OlItemType.olAppointmentItem);
>
>
> When i try to cast the object to _AppointmentItem type (2nd line)it throws
> following exception:
>
> Unable to cast COM object of type 'System.__ComObject' to interface type
> 'Microsoft.Office.Interop.Outlook._AppointmentItem'. This operation failed
> because the QueryInterface call on the COM component for the interface
> with
> IID '{00063033-0000-0000-C000-000000000046}' failed due to the following
> error: No such interface supported (Exception from HRESULT: 0x80004002
> (E_NOINTERFACE))
>
> Any idea why this code doesn't work on some machines with Outlook2003?