File.Delete()的解决 

 1 public bool SendMail()
 2         {
 3             MailMessage myEmail = new MailMessage();
 4             myEmail.From = new MailAddress(fromMail.Text.Trim());
 5             myEmail.To.Add(toMail.Text.Trim());
 6             myEmail.Subject = subject.Text.Trim();
 7             myEmail.IsBodyHtml = format.SelectedItem.Value == "0" ? false : true;
 8             //附件  
 9             string ServerFileName = "";
10             if (this.upfile.PostedFile.ContentLength != 0)
11             {
12                 string upFileName = this.upfile.PostedFile.FileName;
13                 string[] strTemp = upFileName.Split('.');
14                 string upFileExp = strTemp[strTemp.Length - 1].ToString();
15                 ServerFileName = Server.MapPath(@"/upload/" + DateTime.Now.ToString("yyyyMMddHHmmss") + "." + upFileExp);
16                 this.upfile.PostedFile.SaveAs(ServerFileName);
17                 myEmail.Attachments.Add(new Attachment(ServerFileName));
18 
19             }
20 
21             myEmail.Body = body.Text.Trim();
22             myEmail.BodyEncoding = Encoding.UTF8;
23             myEmail.Priority = MailPriority.High;
24             SmtpClient smtp = new SmtpClient();
25             smtp.Credentials = new NetworkCredential("daishuguang4461@126.com", "12619890219");
26             smtp.Port = 25;
27             smtp.Host = "smtp.126.com";
28             smtp.EnableSsl = false;
29             try
30             {
31                 smtp.Send(myEmail);
32                 myEmail.Dispose();
33                 File.Delete(ServerFileName);
34             }
35             catch (Exception e)
36             {
37                 myEmail.Dispose();
38                 File.Delete(ServerFileName);
39                 throw;
40             }
41             return true;
42         }

需要释放资源。http://bbs.csdn.net/topics/390074326

posted @ 2013-04-21 19:30  daishuguang  阅读(263)  评论(0)  编辑  收藏  举报