Preventing File Locking in E-mail Attachment

Question

I'm attaching a file to an e-mail that I'm sending using the SmtpClient class (from System.Net.Mail). Everything works correctly, but the problem is that the file that was uploaded gets locked in the folder by Windows and I can't delete it afterwards.

This is the code I use to attach the file to the e-mail:

Code Block

sHtmlConfirmation = "D:\\ftpsite\\from_web\\" + sFolder + "\\" + sFolder + ".htm";

Attachment data = new Attachment (sHtmlConfirmation);
Email.Attachments.Add (data);

What do I need to include here to prevent Windows from locking the file when it uses it?

Thanks.

Johan Cyprich

Answer 1

The file is unlocked when the MailMessage object is disposed. THe easies method would be to use the using statement:

 

Code Block

using (MailMessage Email = new MailMessage("[e-mail]", "[e-mail]", "Test", "Test Message"))

{

string sHtmlConfirmation = "D:\\ftpsite\\from_web\\" + sFolder + "\\" + sFolder+ ".htm";

Attachment data = new Attachment (sHtmlConfirmation);

Email.Attachments.Add (data);

SmtpClient client = new SmtpClient(server);

client.Send(message);

}

 

 

 

Answer 2

Thanks James. Your solution works perfectly.

Answer 3

THX... NICE SOLUTION.

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Mujeeb