How do I avoid .bin attachments with SmtpClient.Send(MailMessage)?

Question

I'm hitting the problem
described here. However, I don't see any way with MailMessage to set the ordering of the content of the email.
How can I fix this?
MailMessage mail = new MailMessage(new MailAddress(emailTempKeysFrom, "Windward Studios"), new MailAddress(to[0], pur.Account.Name));
mail.Body = txt;
AlternateView htmlView = AlternateView.CreateAlternateViewFromString(html, null, MediaTypeNames.Text.Html);
int num = 0;
foreach (MemoryStream mem in imagesTempKeys)
mem.Position = 0;
LinkedResource res = new LinkedResource(mem);
res.ContentId = "image" + num;
res.TransferEncoding = TransferEncoding.Base64;
htmlView.LinkedResources.Add(res);
num++;
mail.AlternateViews.Add(htmlView);
mailObj.Send(mail);
thanks - dave
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Answer 1

Hello,
Not sure if you have already seen this
ContentDisposition Class, with it, sending a CSV file by using stmpclient, I can received the file with the correct format in the Outlook:
static void Main(string[] args)
try
SmtpClient client = new SmtpClient();
client.Credentials = new System.Net.NetworkCredential(usename,password);
client.EnableSsl = true;
client.Port = 587; // Gmail works on this port
client.Host = "smtp.gmail.com";
MailAddress from = new MailAddress(from)
// Set destinations for the e-mail message.
MailAddress to = new MailAddress(to);
// Specify the message content.
MailMessage message = new MailMessage(from, to);
message.Body = "This is a test e-mail message sent by an application. ";
// Include some non-ASCII characters in body and subject.
string someArrows = new string(new char[] { '\u2190', '\u2191', '\u2192', '\u2193' });
message.Body += Environment.NewLine + someArrows;
message.BodyEncoding = System.Text.Encoding.UTF8;
message.Subject = "test message 1" + someArrows;
message.SubjectEncoding = System.Text.Encoding.UTF8;
string file = "Sample20150126.csv";
// 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);
// Set the method that is called back when the send operation ends.
client.SendCompleted += new
SendCompletedEventHandler(SendCompletedCallback);
// The userState can be any object that allows your callback
// method to identify this send operation.
// For this example, the userToken is a string constant.
string userState = "test message1";
client.SendAsync(message, userState);
Console.WriteLine("Sending message... press c to cancel mail. Press any other key to exit.");
string answer = Console.ReadLine();
// If the user canceled the send, and mail hasn't been sent yet,
// then cancel the pending operation.
if (answer.StartsWith("c") && mailSent == false)
client.SendAsyncCancel();
// Clean up.
message.Dispose();
Console.WriteLine("Goodbye.");
catch (Exception e)
Console.WriteLine(e);
private static void SendCompletedCallback(object sender, System.ComponentModel.AsyncCompletedEventArgs e)
mailSent = true;
Console.WriteLine("Sent");
Please have a try and if this does not work, please feel free to let me know.
Regards.
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