File getting locked after attached to email

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Hey guys, I'm just using some normal SMTP emailing code and I'm adding an attachment to send. Besides its extremely slow sending time (Around 4 minuets(I had to turn off the deadswitch and turn time out to 30 min)), it also seems to lock the file from being written to. I can no longer append to the file.

Any help? I'm attaching two files, one is less than a megabyte while the second one would be around 10 megabytes.

Posted 6-Aug-10 17:30pm

Mike$7

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Yusuf 7-Aug-10 0:37am

That is unusual, show us the code so we may spot something

2 solutions

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M.Hendrix · Answer 1 · 2010-08-07T03:33:00

Solution 2

You have to wait for SMTP to finish sending the email and its attachment.
After that you should Dispose the MailMessage object and then the attachment is unlocked.

So:

SmtpClient oSmtp = new SmtpClient();
//set properties
MailMessage oMail = new MailMessage();
//set properties
oSmtp.Send(oMail);
oMail.Dispose();

This worked for me just fine.

Posted 7-Aug-10 3:33am

M.Hendrix

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Mike$7 7-Aug-10 11:15am

I've done that but the file is still locked... or at least my program can't write to it, although no exceptions pop up...

Christian Graus · Answer 2 · 2010-08-06T22:44:00

Solution 1

Yeah, that happens. It's happened to me, too. I suggest you make a copy of the file in order to mail it.

Posted 6-Aug-10 22:44pm

Christian Graus