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How do I handle outlooks VSTO objects as if they are mailitems

I have written some VSTO (2003) code that sucessfully applies some such as microsoft.office.interop.outlook.appointmentitem for instance(infact it needs to work for anything the user can send that would have a subject).

Assuming the outlook item types have a subject property, an attachments property and a save method, how can I approach writing code that works for all relevant interop.outlook types.

I tried addressing this via reflection but GetProperty is returing null so I can't use GetValue on it


? mi.GetType().GetProperty("Subject")
null

?(mi as Microsoft.Office.Interop.Outlook.MailItem).Subject
"Test Subject"

there doesn't seem to be a generic outlookitem class I can cast to, to do this. What's the correct approach ?

EDIT:
To clarif my code starts like this...


 void Application_ItemSend(object Item, ref bool Cancel) 
 {
 if (Item is Microsoft.Office.Interop.Outlook.MailItem) 
 {
 Microsoft.Office.Interop.Outlook.MailItem currentItem = 
 Item as Microsoft.Office.Interop.Outlook.MailItem;

then does stuff to currentItem (including passing to to various functions currently typed with Microosft.Office.Interop.Outlook.MailItem properties. I want them to handle mandatory subject line changes according. The code is written to to operate on other types operate on microsoft.office.interop.outlook.mailitem However, I need the same code to attachements of mail items "Microsoft.Interop.Outlook.somethingsendable"

http://stackoverflow.com/questions/4185899/how-do-i-handle-outlooks-vs to-objects-as-if-they-are-mailitems

Posted: 549 days ago by: Andiih | 1 Answer | Tags: C# Reflection Vsto Polymorphism

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Answers:

That's not going to work out wrap the PIA interfaces you need to support, and encapsulate the switching code there behind a common wrapper for the 'common' operations you want to use. You would create a SendableItem using either a MailItem or an AppointmentItem but once created, they look the same from the outside of the SendableItem of the box - AppointmentItem are completely different interfaces, so polymorphism is not an that you create a SendableItem and MailItem option.

The best I can suggest is class of your own to wrapper.

549 days ago by: Steve Townsend

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