public static void CreateMessageWithAttachment(string server)
        {
            // Specify the file to be attached and sent.
            // This example assumes that a file named Data.xls exists in the
            // current working directory.
            string file = "data.xls";
            // Create a message and set up the recipients.
            MailMessage message = new MailMessage(
               "jane@contoso.com",
               "ben@contoso.com",
               "Quarterly data report.",
               "See the attached spreadsheet.");

            // Create  the file attachment for this e-mail message.
            Attachment data = new Attachment(file, MediaTypeNames.Application.Octet);
            // Add time stamp information for the file.
            ContentDisposition disposition = data.ContentDisposition;
            disposition.CreationDate = System.IO.File.GetCreationTime(file);
            disposition.ModificationDate = System.IO.File.GetLastWriteTime(file);
            disposition.ReadDate = System.IO.File.GetLastAccessTime(file);
            // Add the file attachment to this e-mail message.
            message.Attachments.Add(data);
            //Send the message.
            SmtpClient client = new SmtpClient(server);
            // Add credentials if the SMTP server requires them.
            client.Credentials = CredentialCache.DefaultNetworkCredentials;
            client.Send(message);
            // Display the values in the ContentDisposition for the attachment.
            ContentDisposition cd = data.ContentDisposition;
            Console.WriteLine("Content disposition");
            Console.WriteLine(cd.ToString());
            Console.WriteLine("File {0}", cd.FileName);
            Console.WriteLine("Size {0}", cd.Size);
            Console.WriteLine("Creation {0}", cd.CreationDate);
            Console.WriteLine("Modification {0}", cd.ModificationDate);
            Console.WriteLine("Read {0}", cd.ReadDate);
            Console.WriteLine("Inline {0}", cd.Inline);
            Console.WriteLine("Parameters: {0}", cd.Parameters.Count);
            foreach (DictionaryEntry d in cd.Parameters)
            {
                Console.WriteLine("{0} = {1}", d.Key, d.Value);
            }
            data.Dispose();
        }

static void CreateMessageWithAttachment( String^ server )
{

   // Specify the file to be attached and sent.
   // This example assumes that a file named Data.xls exists in the
   // current working directory.
   String^ file = L"data.xls";

   // Create a message and set up the recipients.
   MailMessage^ message = gcnew MailMessage( L"jane@contoso.com",L"ben@contoso.com",L"Quarterly data report.",L"See the attached spreadsheet." );

   // Create  the file attachment for this e-mail message.
   Attachment^ data = gcnew Attachment(file, MediaTypeNames::Application::Octet);

   // Add time stamp information for the file.
   ContentDisposition^ disposition = data->ContentDisposition;
   disposition->CreationDate = System::IO::File::GetCreationTime( file );
   disposition->ModificationDate = System::IO::File::GetLastWriteTime( file );
   disposition->ReadDate = System::IO::File::GetLastAccessTime( file );

   // Add the file attachment to this e-mail message.
   message->Attachments->Add( data );

   //Send the message.
   SmtpClient^ client = gcnew SmtpClient( server );

   // Add credentials if the SMTP server requires them.
   client->Credentials = CredentialCache::DefaultNetworkCredentials;
   client->Send( message );

   // Display the values in the ContentDisposition for the attachment.
   ContentDisposition^ cd = data->ContentDisposition;
   Console::WriteLine( L"Content disposition" );
   Console::WriteLine( cd );
   Console::WriteLine( L"File {0}", cd->FileName );
   Console::WriteLine( L"Size {0}", cd->Size );
   Console::WriteLine( L"Creation {0}", cd->CreationDate );
   Console::WriteLine( L"Modification {0}", cd->ModificationDate );
   Console::WriteLine( L"Read {0}", cd->ReadDate );
   Console::WriteLine( L"Inline {0}", cd->Inline );
   Console::WriteLine( L"Parameters: {0}", cd->Parameters->Count );
   IEnumerator^ myEnum1 = cd->Parameters->GetEnumerator();
   while ( myEnum1->MoveNext() )
   {
      DictionaryEntry^ d = safe_cast<DictionaryEntry^>(myEnum1->Current);
      Console::WriteLine( L"{0} = {1}", d->Key, d->Value );
   }

   data->~Attachment();
   client->~SmtpClient();
}

public static void CreateMessageWithAttachment(String server)
{
    // Specify the file to be attached and sent.
    // This example assumes that a file named Data.xls exists in the
    // current working directory.
    String file = "data.xls";
    // Create a message and set up the recipients.
    MailMessage message = new MailMessage("jane@contoso.com", 
        "ben@contoso.com", "Quarterly data report.", 
        "See the attached spreadsheet.");
    // Create  the file attachment for this e-mail message.
    Attachment data = new Attachment(file, MediaTypeNames.Application.Octet);
    // Add time stamp information for the file.
    ContentDisposition disposition = data.get_ContentDisposition();
    disposition.set_CreationDate(System.IO.File.GetCreationTime(file));
    disposition.set_ModificationDate(System.IO.File.GetLastWriteTime(file));
    disposition.set_ReadDate(System.IO.File.GetLastAccessTime(file));
    // Add the file attachment to this e-mail message.
    message.get_Attachments().Add(data);
    //Send the message.
    SmtpClient client = new SmtpClient(server);
    // Add credentials if the SMTP server requires them.
    client.set_Credentials(CredentialCache.get_DefaultNetworkCredentials());
    client.Send(message);
    // Display the values in the ContentDisposition for the attachment.
    ContentDisposition cd = data.get_ContentDisposition();
    Console.WriteLine("Content disposition");
    Console.WriteLine(cd.ToString());
    Console.WriteLine("File {0}", cd.get_FileName());
    Console.WriteLine("Size {0}", System.Convert.ToString(cd.get_Size()));
    Console.WriteLine("Creation {0}", cd.get_CreationDate());
    Console.WriteLine("Modification {0}", cd.get_ModificationDate());
    Console.WriteLine("Read {0}", cd.get_ReadDate());
    Console.WriteLine("Inline {0}", 
        System.Convert.ToString(cd.get_Inline()));
    Console.WriteLine("Parameters: {0}", 
        System.Convert.ToString(cd.get_Parameters().get_Count()));
    IEnumerator myEnumerable = (IEnumerator)cd.get_Parameters().
        GetEnumerator();
    while (myEnumerable.MoveNext()) {
        DictionaryEntry d = (DictionaryEntry)myEnumerable.get_Current();
        Console.WriteLine("{0} = {1}", d.get_Key(), d.get_Value());
    }
    data.Dispose();
} //CreateMessageWithAttachment