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vb.net Unable to cast COM object of type 'System.__ComObject' to interface type 'Microsoft.Office.Interop.Outlook.MailItem

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Hello All,

Who can help me with a problem that i have right now.
I am trying to create a prog that will archive mails. I am using VS 2008 and MS outlook 2003.
The prog is crashing at this point:

Dim I As Integer
For i = 1 To oItems.Count
omsg = oItems.Item(I) **** I will receive the error in the subject at this point.
If omsg.FlagStatus = OlFlagStatus.olFlagComplete Then
DT.Rows.Add(omsg.Subject)
End If
Next

I hope that I have posted my question in the correct forum.

Regards,
DO.
- Moved by Karel ZikmundMicrosoft employee Friday, February 5, 2010 5:33 PM Wrong forum (From:Building Development and Diagnostic Tools for .Net)
Friday, February 5, 2010 10:38 AM

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Check out the Outlook API you use, you are casting a COM object to interface Microsoft.Office.Interop.Outlook.MailItem, which it doesn't implement. That's what the exception says.
Here are resources for Outlook APIs:
http://social.msdn.microsoft.com/Forums/en-US/vsto/thread/063a23a6-1595-4c83-a25f-6c94658c4649

-Karel
- Proposed as answer by Karel ZikmundMicrosoft employee Tuesday, February 9, 2010 4:56 PM
- Marked as answer by Ed Price - MSFTMicrosoft employee Sunday, May 6, 2012 5:46 AM
Friday, February 5, 2010 5:30 PM
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Or ask in the Outlook dev forum: http://social.msdn.microsoft.com/Forums/en-US/outlookdev/threads

Thanks!
Ed Price (a.k.a User Ed), SQL Server Experience Program Manager (Blog, Twitter, Wiki)
- Marked as answer by Ed Price - MSFTMicrosoft employee Monday, July 23, 2012 9:56 PM
Monday, July 23, 2012 9:56 PM

All replies

1

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Check out the Outlook API you use, you are casting a COM object to interface Microsoft.Office.Interop.Outlook.MailItem, which it doesn't implement. That's what the exception says.
Here are resources for Outlook APIs:
http://social.msdn.microsoft.com/Forums/en-US/vsto/thread/063a23a6-1595-4c83-a25f-6c94658c4649

-Karel
- Proposed as answer by Karel ZikmundMicrosoft employee Tuesday, February 9, 2010 4:56 PM
- Marked as answer by Ed Price - MSFTMicrosoft employee Sunday, May 6, 2012 5:46 AM
Friday, February 5, 2010 5:30 PM
1

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Hello Karel,

Thanks allot for your reply.

I will check it out.

Regards,
DO.

Tuesday, February 9, 2010 11:17 AM
0

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Or ask in the Outlook dev forum: http://social.msdn.microsoft.com/Forums/en-US/outlookdev/threads

Thanks!
Ed Price (a.k.a User Ed), SQL Server Experience Program Manager (Blog, Twitter, Wiki)
- Marked as answer by Ed Price - MSFTMicrosoft employee Monday, July 23, 2012 9:56 PM
Monday, July 23, 2012 9:56 PM