Sending e-mail with attachment C#

Question

I need to send email message with attachment. I'm using below code:

MailMessage msg = new MailMessage("adrFrom", "adrTo", "header", "body");

SmtpClient client = new SmtpClient("hostName", 25);
client.DeliveryMethod = SmtpDeliveryMethod.Network;
client.UseDefaultCredentials = false;
client.Credentials = new System.Net.NetworkCredential("accountName", "password");

Attachment atch = new Attachment(filePath, MediaTypeNames.Application.Octet);

atch.Name = "FileName.docx";

msg.Attachments.Add(atch);

client.Send(msg);

Message is received, and attachment is there too, but file name looks like ' =?utf-8?B?dXRHRDBZTFJnOUdBMFlzZzBKelF1TkNoPz0NCiA9P3V0Zi04P0I/TG1S?=\', also there is no extension(.docx) and file content looks like it's in the Base64 encoding. How can I send e-mail message with .docx file saving it extension and name?

You specify `Application.Octet` as your content type (which is binary) and the default `TransferEncoding` is set to `base64`. That's why you're seeing a base64 string. — Yuval Itzchakov, Mar 10 '15 at 09:47
@YuvalItzchakov If I don't use Application.Octet problem is the same — Gleb, Mar 10 '15 at 09:58

score 1 · Answer 1 · answered Mar 10 '15 at 09:46

1

Add Contentype to your Attachment

System.Net.Mime.ContentType contentType = new System.Net.Mime.ContentType();
contentType.MediaType = System.Net.Mime.MediaTypeNames.Application.Octet;
contentType.Name = "test.docx";
msg.Attachments.Add(new Attachment("I:/files/test.docx"), contentType);

answered Mar 10 '15 at 09:46

Dhru 'soni

1,024
7
23

@JenishRabadiya Ahmedabad ka hoke esa karta hai hahah – Dhru 'soni Mar 10 '15 at 09:50

score 0 · Accepted Answer · answered Mar 10 '15 at 10:20

0

I have found a solution

The problem was in Russian letters in the file name. Without it everything works fine.

answered Mar 10 '15 at 10:20

Gleb

1,412
1
23
55

@MoslemBenDhaou yes, thats also solved by installing microsoft patch. http://support.microsoft.com/kb/2402064 – Gleb Mar 10 '15 at 10:49

Sending e-mail with attachment C#

2 Answers2