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ivan  
#1 Posted : Tuesday, April 12, 2011 5:20:15 AM(UTC)
ivan

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Visual Basic.NET Example Code

When an Outlook user composes and sends a message using either Rich Text Format or HTML Format, Outlook automagically generates a file, winmail.dat, and attaches it to the end of the email. The winmail.dat contains the rich text body and original attachments. To parse winmail.dat (TNEF stream) file, we should use ParseTNEF method.

Code:

' The following example codes demonstrate parsing winmail.dat - TNEF stream
' To get full sample projects, please download and install EAGetMail on your machine.
' To run it correctly, please change email server, user, password, folder, file name value to yours

Imports System.Collections 
Imports System.Text 
Imports System.IO 

' Imports EAGetMail namespace
Imports EAGetMail 

Module Module1 
    Private Sub ParseEmail(ByVal emlFile As String) 
        Dim oMail As New Mail("TryIt") 
        oMail.Load(emlFile, False) 

        If oMail.IsEncrypted Then 
            Try 
                ' This email is encrypted, we decrypt it by user default certificate.
                ' you can also use specified certificate like this
                ' Dim oCert As New Certificate()
                ' oCert.Load("c:\test.pfx", "pfxpassword", _
                ' Certificate.CertificateKeyLocation.CRYPT_USER_KEYSET)
                ' oMail = oMail.Decrypt( oCert )
                oMail = oMail.Decrypt(Nothing) 
            Catch ep As Exception 
                Console.WriteLine(ep.Message) 
            End Try 
        End If 

        If oMail.IsSigned Then 
            Try 
                ' This email is digital signed.
                Dim cert As EAGetMail.Certificate = oMail.VerifySignature() 
                ' You can add the certificate to your certificate storage like this
                ' cert.AddToStore( _
                ' Certificate.CertificateStoreLocation.CERT_SYSTEM_STORE_CURRENT_USER, _
                ' "addressbook" )
                ' then you can use send the encrypted email back to this sender.
                Console.WriteLine("This email contains a valid digital signature.") 
            Catch ep As Exception 
                Console.WriteLine(ep.Message) 
            End Try 
        End If 

        ' Parse Mail From/Sender
        Console.WriteLine("From: {0}", oMail.From.ToString()) 

        ' Parse Mail To/Recipient
        Dim addrs As MailAddress() = oMail.[To] 
        For i As Integer = 0 To addrs.Length - 1 
            Console.WriteLine("To: {0}", addrs(i).ToString()) 
        Next 

        ' Parse Mail CC
        addrs = oMail.Cc 
        For i As Integer = 0 To addrs.Length - 1 
            Console.WriteLine("To: {0}", addrs(i).ToString()) 
        Next 

        ' Parse Mail Subject
        Console.WriteLine("Subject: {0}", oMail.Subject) 

        ' Parse Mail Text/Plain body
        Console.WriteLine("TextBody: {0}", oMail.TextBody) 

        ' Parse Mail Html Body
        Console.WriteLine("HtmlBody: {0}", oMail.HtmlBody) 

        ' Parse Attachments
        Dim atts As Attachment() = oMail.Attachments 
        For i As Integer = 0 To atts.Length - 1 
            Dim att As Attachment = atts(i) 

            ' This attachment is in OUTLOOK RTF format(TNEF), decode it here.
            If [String].Compare(att.Name, "winmail.dat") = 0 Then 
                Dim tatts As Attachment() = Nothing 
                Try 
                    tatts = Mail.ParseTNEF(att.Content, True) 
                Catch ep As Exception 
                    Console.WriteLine(ep.Message) 
                End Try 

                Dim y As Integer = tatts.Length 
                For x As Integer = 0 To y - 1 
                    Dim tatt As Attachment = tatts(x) 
                    Console.WriteLine("winmail.dat: {0}", tatt.Name) 
                Next 
                Continue For 
            End If 
            Console.WriteLine("Attachment: {0}", att.Name) 
        Next 
    End Sub 

    Sub Main() 

        ParseEmail("c:\my folder\test.eml") 

    End Sub 
End Module 

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