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ivan  
#1 Posted : Wednesday, April 13, 2011 5:18:25 AM(UTC)
ivan

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C#/CSharp Example

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.

The following code demonstrates how to parse MAPI winmail.dat in email.
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

using System; 
using System.Collections; 
using System.Collections.Generic; 
using System.Text; 
using System.IO; 

// Add EAGetMail namespace
using EAGetMail; 

namespace receiveemail 
{ 
    class Program 
    { 
       private static void ParseEmail(string emlFile) 
        { 
            Mail oMail = new Mail("TryIt"); 
            oMail.Load(emlFile, false); 

             if (oMail.IsEncrypted) 
            { 
                try 
                { 
                    // This email is encrypted, we decrypt it by user default certificate.
                    // you can also use specified certificate like this
                    // Certificate oCert = new Certificate();
                    // oCert.Load("c:\test.pfx", "pfxpassword",
                    // Certificate.CertificateKeyLocation.CRYPT_USER_KEYSET);
                    // oMail = oMail.Decrypt( oCert );
                    oMail = oMail.Decrypt(null); 
                } 
                catch (Exception ep) 
                { 
                    Console.WriteLine(ep.Message); 
                } 
            } 

            if (oMail.IsSigned) 
            { 
                try 
                { 
                    // This email is digital signed.
                    EAGetMail.Certificate cert = oMail.VerifySignature(); 
                    Console.WriteLine("This email contains a valid digital signature."); 

                    // 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.
                } 
                catch (Exception ep) 
                { 
                    Console.WriteLine(ep.Message); 
                } 
            } 

            // Parse sender
            Console.WriteLine("From: {0}", oMail.From.ToString()); 

            // Parse to recipient
            MailAddress[] addrs = oMail.To; 
            for (int i = 0; i < addrs.Length; i++) 
            { 
                Console.WriteLine("To: {0}", addrs[i].ToString()); 
            } 

            // Parse cc
            addrs = oMail.Cc; 
            for (int i = 0; i < addrs.Length; i++) 
            { 
                Console.WriteLine("To: {0}", addrs[i].ToString()); 
            } 

            // Parse subject
            Console.WriteLine("Subject: {0}", oMail.Subject); 

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

            // Parse Html body
            Console.WriteLine("HtmlBody: {0}", oMail.HtmlBody ); 

            // Parse attachments
            Attachment[] atts = oMail.Attachments; 
            for (int i = 0; i < atts.Length; i++) 
            { 
                Attachment att = atts[i]; 

                // This attachment is in OUTLOOK RTF format(TNEF stream), decode it here.
                if (String.Compare(att.Name, "winmail.dat") == 0) 
                { 
                    Attachment[] tatts = null; 
                    try 
                    { 
                        tatts = Mail.ParseTNEF(att.Content, true); 
                    } 
                    catch (Exception ep) 
                    { 
                        Console.WriteLine(ep.Message); 
                        continue; 
                    } 
                    int y = tatts.Length; 
                    for (int x = 0; x < y; x++) 
                    { 
                        Attachment tatt = tatts[x]; 
                        Console.WriteLine("winmail.dat: {0}", tatt.Name); 
                    } 
                    continue; 
                } 
                Console.WriteLine("Attachment: {0}", att.Name); 
            } 
        } 

        static void Main(string[] args) 
        { 
            ParseEmail( "c:\\my folder\\test.eml" ); 
        } 
    } 
} 

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