Console.Write("Begin");
            MailMessage mail = new MailMessage(sender, Receiver);
            SmtpClient smtp = new SmtpClient(server);
            smtp.UseDefaultCredentials = false;
            smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
            smtp.Credentials = new NetworkCredential(sender, sender_pass);
           
            mail.Subject = subject;
            if (Html == false)
            {                   
              mail.Body=ParseTags(contentText);
            }
            mail.IsBodyHtml = Html;
            //设置正文的编码形式.这里的设置为取系统默认编码

            mail.BodyEncoding = System.Text.Encoding.Default;

            ///这里为添加附件的代码，主要用的是FileUpload控件，fileUpload是FileUpload控件的ID
            if (fileUpload.PostedFile.ContentLength != 0)
            {
                string fileName = fileUpload.PostedFile.FileName;
                //  该类的构造函数有6个重载，下面演示创建一个Attachment类的实例的两种常用方式。

                Attachment Item = new Attachment(fileName, MediaTypeNames.Text.Plain);
                mail.Attachments.Add(Item);

           }

           mail.sent();

  Console.Write("Begin");！！

大哥，这是控制台程序里面的输出代码。汗·····