对于通过 SMTP 地址进行的简单发送/接收控制,我建议使用地址检查方法。可以通过以下方式完成:
'Get mail address sender
Dim mailSender As String = GetSenderSMTPAddress(outMailItem)
'Get current user mail address
Dim mailUser As String = OutlookMail2DocScriba.GetUserSMTPAddress(oNameSpace.CurrentUser.AddressEntry)
'If sender and current user matches is a sended mail, otherwise received
If String.Compare(mailSender, mailUser, True) = 0 Then
Return "Sended"
Else
Return "Received"
End If
Public Shared Function GetSenderSMTPAddress(ByVal mail As Outlook.MailItem) As String
'http://msdn.microsoft.com/en-us/library/microsoft.office.interop.outlook.oladdresslisttype.aspx
If mail Is Nothing Then
Throw New ArgumentNullException()
End If
If mail.SenderEmailType = "EX" Then
Dim sender As Outlook.AddressEntry = Nothing
Try
sender = mail.Sender
Catch ex As Exception
'Se non è stato in grado di reperire il sender (Outlook 2007),
'ignoro l'eccezione e procedo.
End Try
If sender IsNot Nothing Then
Return GetUserSMTPAddress(sender)
Else
Return Nothing
End If
Else
Return mail.SenderEmailAddress
End If
End Function
Public Shared Function GetUserSMTPAddress(ByVal sender As Outlook.AddressEntry) As String
'Now we have an AddressEntry representing the Sender
'http://msdn.microsoft.com/en-us/library/office/ff868214(v=office.15).aspx
Const EXCHANGE_USER_ADDRESS_ENTRY As Int32 = 0
Const EXCHANGE_REMOTE_USER_ADDRESS_ENTRY As Int32 = 5
Dim PR_SMTP_ADDRESS As String = "http://schemas.microsoft.com/mapi/proptag/0x39FE001E"
If sender.AddressEntryUserType = EXCHANGE_USER_ADDRESS_ENTRY OrElse _
sender.AddressEntryUserType = EXCHANGE_REMOTE_USER_ADDRESS_ENTRY Then
'Use the ExchangeUser object PrimarySMTPAddress
Dim exchUser As Object = sender.GetExchangeUser()
If exchUser IsNot Nothing Then
Return exchUser.PrimarySmtpAddress
Else
Return Nothing
End If
Else
Return TryCast(sender.PropertyAccessor.GetProperty(PR_SMTP_ADDRESS), String)
End If
End Function