ASP.NET通过QQ邮箱发送邮件以及发送附件

protected void Button1_Click(object sender, EventArgs e)
        {
            SendSMTPEMail("smtp.qq.com", "发件人邮箱@qq.com", "发件人授权码", "收件人@qq.com", "测试邮件", "用asp.net发送邮件，用qq的smtp.qq.com服务器，测试成功");
        }
        public void SendSMTPEMail(string strSmtpServer, string strFrom, string strFromPass, string strto, string strSubject, string strBody)
        {
            System.Net.Mail.SmtpClient client = new SmtpClient(strSmtpServer);
            client.UseDefaultCredentials = false;
            client.EnableSsl = true;
            client.Credentials = new System.Net.NetworkCredential(strFrom, strFromPass);
            client.DeliveryMethod = SmtpDeliveryMethod.Network;
            System.Net.Mail.MailMessage message = new MailMessage(strFrom, strto, strSubject, strBody);
            message.BodyEncoding = System.Text.Encoding.UTF8;
            message.IsBodyHtml = true;

            //使用文件路径发送附件
            //AlternateView item = new AlternateView(@"D:\\软件\\(软电话)eyebeam1.5.rar", "application/x-rar-compressed");
            //message.AlternateViews.Add(item);
            //message.AlternateViews.Dispose();

            //使用Stream发送附件 
            //Attachment letter = new Attachment(FileUploadLetter.FileContent, FileUploadLetter.PostedFile.ContentType);
            //letter.ContentDisposition.Inline = true;
            //letter.ContentDisposition.DispositionType = DispositionTypeNames.Inline;
            ////inline.ContentId = "1";
            //letter.ContentType.MediaType = FileUploadLetter.PostedFile.ContentType;
            //letter.ContentType.Name = Path.GetFileName(FileUploadLetter.PostedFile.FileName);
            //letter.Name = Path.GetFileName(FileUploadLetter.PostedFile.FileName);
            //message.Attachments.Add(letter);
            //message.Attachments.Dispose();
           
            client.Send(message);
        }