I’m trying to attach a file to an e-mail that I’m sending using the SmtpClient class (from System.Net.Mail) using C# for ASP.NET. 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 used to attach a file to an e-mail:

sHtmlConfirmation = "D:\\ftpsite\\from_web\\" + sFolder + "\\" + sFolder + ".htm";
Attachment data = new Attachment (sHtmlConfirmation);
Email.Attachments.Add (data);

I needed a solution to prevent Windows from locking a file that it uses, so I turned to the MSDN Forums for help. James Curran posted a working solution. He suggested employing the using statement to dispose the MailMessage object after the mail has been sent.

The code which fixes the problem is:

using (MailMessage Email = new MailMessage ())
{
// setup message details here
}

After the mail was sent, I was able to move the folder where the attached file was used.

Related posts:
	Thunderbird: Connection to Server Time Out Error The World’s First Web Page The Dangers of Assumptions in Software Development An Introduction to Social Engineering

Share this post:

               

Follow Me:

Did you find this post interesting and useful? You can keep up to date on this blog by subscribing to my RSS feed, or you can have new posts sent to you by e-mail. You can also follow me on Twitter.

No Comments »

Trackback This Post | Subscribe to the comments through RSS Feed