delete attachment file

c# email-attachments
SAK picture SAK · May 18, 2010 · Viewed 8k times · Source

i am using System.Net.Mail for sending mail in asp.net.. how to delete attachment file after it is send as attachment mail.. i tried to use File.Delete method.. but i am getting this error.. the process cannot access the file path\fun.jpg' because it is being used by another process. thank you

Answer

Bob G picture Bob G · May 18, 2010

Dispose of the MailMessage when you're done with it. It still has a lock on the file you've added as an attachment until you've done so.

var filePath = "C:\\path\\to\\file.txt";
var smtpClient = new SmtpClient("mailhost");
using (var message = new MailMessage())
{
    message.To.Add("[email protected]");
    message.From = new MailAddress("[email protected]");
    message.Subject = "Test";
    message.SubjectEncoding = Encoding.UTF8;
    message.Body = "Test " + DateTime.Now;
    message.Attachments.Add(new Attachment(filePath));
}
if (File.Exists(filePath)) File.Delete(filePath);
Console.WriteLine(File.Exists(filePath));

Output: False

I would imagine that if you still have something locking the file after disposing the message, that you likely have another lock on the file, but without code, we can't help you.

Related questions

Can I send files via email using MailKit?

As the title, is MailKit supported to send file? If yes, how can I do it?

Read More
Exceeded storage allocation. The server response was: 4.3.1 Message size exceeds fixed maximum message size

I am using SMTPclient to send mail with attachment. When the attachment is more than 2mb, I am getting the below error: ** "Exceeded storage allocation. The server response was: 4.3.1 Message size exceeds fixed maximum message size". ** 1) Can i send email ** …

Read More
Set Email Attachment name in C#

I add an attachment like this: System.Net.Mail.Attachment attachment = new System.Net.Mail.Attachment(AttachmentPath); msg.Attachments.Add(attachment); But I want to make it attach as a different name, the actual file name is very long and …

Read More