从.msg文件打开RDOMail for MailItem打开

Question

Is there a way of creating an RDOMail instance for a MailItem corresponding to an Outlook message opened from a .msg file?

My usual approach is to get the CurrentItem from the Inspector , cast it to MailItem , retrieve its EntryID and StoreID values, and finally load it from an RDOSession through the GetMessageFromID method.

However, in the case of messages opened from a .msg , the EntryID property returns null . Is there another way around this? I assume I could use the GetMessageFromMsgFile method instead, but how do I retrieve the full path of the message from the MailItem ?

PS The solution should ideally work with the Outlook 2003 object model.

Answer 1

You could do two approaches here...

1. Save the MailItem to disk using _MailItem.SaveAs() . Then use GetMessageFromMsgFile .
2. Save the MailItem to a Folder (store) to persist it, giving it an EntryID and StoreID . Use MailItem.Save() and MailItem.Move(tempFolder) to persist the MSG to a folder. I typically use a hidden folder for this storage swap . You would need to periodically purge this swap folder on startup or at regular intervals ( Outlook has lingering locks, so you better use try/catches ).