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POcannot delete file because it's being used by another process
 

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  1. POcannot delete file because it's being used by another process
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    <p>I'm getting the error message at the end, when I try to delete files in the "foreach" loop.</p> <p>I know I need to be using the keyword ´using` somewhere but I'm not sure where and how.</p> <pre><code>private void btnEmailIntegrationFiles_Click(object sender, EventArgs e) { DialogResult EmailWarningMsg = MessageBox.Show("You're about to email the Integration IAT text files. Are you sure?", "WARNING!", MessageBoxButtons.YesNo, MessageBoxIcon.Warning, MessageBoxDefaultButton.Button2); if (EmailWarningMsg == DialogResult.Yes) { if (Directory.GetFiles(AppVars.NetworkIntegrationFileLocation).Length == 0) { MessageBox.Show("The folder is empty. Please create the files before sending it.", "Error!", MessageBoxButtons.OK, MessageBoxIcon.Error); } else { if (Directory.GetFiles(AppVars.NetworkIntegrationFileLocation).Length != 4) { MessageBox.Show("The folder does not contain exactly 4 files.", "Error!", MessageBoxButtons.OK, MessageBoxIcon.Error); } else { Email email = new Email(); email.SendEmailToFinalDestinationWithAttachments(AppVars.DBTeamEmail, AppVars.ChrisWhitmoreEmail, AppVars.DBTeamEmail, "Integration Files", "Please see integration files attached."); } } PopulateListViewWithPoliciesAvailableToHoldBack(); string[] files = Directory.GetFiles(AppVars.NetworkIntegrationFileLocation); foreach (string file in files) { File.Delete(file); } } } </code></pre> <p>How would I go about using the keyword <code>using</code> for "emailing" so that I don't run into this error message when trying to delete those files that were emailed as attachments?</p> <p>Here's the send email class:</p> <pre><code>public void SendEmailToFinalDestinationWithAttachments(string EmailFrom, string EmailTo, string EmailCC, string EmailSubject, string EmailBody) { try { MailMessage EmailMessage = new MailMessage(); SmtpClient smtp = new SmtpClient(AppVars.SMTPClient, AppVars.SMTPClientPort); smtp.UseDefaultCredentials = false; EmailMessage.IsBodyHtml = true; EmailMessage.To.Add(EmailTo); EmailMessage.CC.Add(EmailCC); EmailMessage.CC.Add(user); EmailMessage.Subject = EmailSubject; EmailMessage.From = new MailAddress(EmailFrom); EmailMessage.Body = EmailBody; string[] files = Directory.GetFiles(AppVars.NetworkIntegrationFileLocation, "*" + DateTime.Now.ToString("yyyyMMdd") + "*"); foreach (string file in files) { EmailMessage.Attachments.Add(new Attachment(file)); } smtp.Send(EmailMessage); } catch (Exception e) { MessageBox.Show(e.Message); } } </code></pre>
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      1. POcannot delete file because it's being used by another process
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    2. VO
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    1. COProbably on Email; but, you haven't provide any detail about this class. Where is it from? What does SendEmailToFinalDestinationWithAttachments do, etc.?
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      1. USPeter Ritchie
    2. COClean up the code / refactor it and make sure that you post all necessary code that fits your question.
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      1. USMethodMan
    3. COemail class provided. I'm pretty sure the issue is with "string[] files = Directory.GetFiles(AppVars.NetworkIntegrationFileLocation, "*" + DateTime.Now.ToString("yyyyMMdd") + "*"); foreach (string file in files) { EmailMessage.Attachments.Add(new Attachment(file)); }" ...how would I go about using the keyword "using" here?
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