c# - 作为电子邮件附件发送后，文件卡在 w3wp.exe 中

Question

我有一个 Web 应用程序，它创建 Outlook session .ics 文件并将其作为附件发送给用户。它工作正常，但发送后我无法从服务器删除该文件，因为它正在被 w3wp.exe 使用。 这是我的功能:

public static void SendEmail(string subject, string body, List<string> to, string path)
{
    MailMessage mailMessage = new MailMessage();
    mailMessage.From = new MailAddress("<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="294746045b4c594550694a464459484750074a4644" rel="noreferrer noopener nofollow">[email protected]</a>", "Test email");
    foreach (string item in to)
    {
        mailMessage.To.Add(item);
    }
    mailMessage.Subject = subject;
    mailMessage.BodyEncoding = Encoding.UTF8;
    mailMessage.Body += body;
    mailMessage.IsBodyHtml = true;
    SmtpClient smtpClient = new SmtpClient("smtp.company.com");
    if (!string.IsNullOrEmpty(path))
    {
        Attachment attachment = new Attachment(path);
        mailMessage.Attachments.Add(attachment);
    }
    smtpClient.Send(mailMessage);
}

Answer 1

你错过了最后的mailMessage.Dispose();。