c#邮件发送代码

            string _toEmail,_subject,_body,_fromEmail,_fromPassword;

            _toEmail = "[e-mail]";//获取收件人邮箱

            _subject = "你好，我是";//获取邮件主题

            _body = "你好！ 你吃了饭没！";//获取邮件正文

            _fromEmail = "[e-mail]";//获取发件人邮箱

            _fromPassword = "xxxxxxxxx";//获取发件人密码

 

 

            System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient("smtp.qq.com");

            client.UseDefaultCredentials = false;

            client.Credentials = new System.Net.NetworkCredential(_fromEmail, _fromPassword);//设置发件人的邮箱和密码

            client.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;//以SMTP形式发送邮件

 

            System.Net.Mail.MailMessage message = new System.Net.Mail.MailMessage();

            message.To.Add(_toEmail);//设置收件人的邮箱

 

            // message.To.Add("[e-mail]");

            message.From = new System.Net.Mail.MailAddress(_fromEmail);//设置发件人的邮箱和别名

            message.Subject = _subject;//设置邮件主题

            message.SubjectEncoding = System.Text.Encoding.GetEncoding("UTF-8");//主题编码

            message.Body = _body;//设置邮件正文

            message.BodyEncoding = System.Text.Encoding.GetEncoding("UTF-8");//正文编码

            message.IsBodyHtml = true;//是否以HTML发送

 

 

            //附件 

            string strFilePath = @"E:\logo.jpg";

            System.Net.Mail.Attachment p_w_upload1 = new System.Net.Mail.Attachment(strFilePath);//添加附件 

            p_w_upload1.Name = System.IO.Path.GetFileName(strFilePath);

            p_w_upload1.NameEncoding = System.Text.Encoding.GetEncoding("gb2312");

            p_w_upload1.TransferEncoding = System.Net.Mime.TransferEncoding.Base64;

            p_w_upload1.ContentDisposition.Inline = true;

            p_w_upload1.ContentDisposition.DispositionType = System.Net.Mime.DispositionTypeNames.Inline;

            string cid = p_w_upload1.ContentId;//关键性的地方，这里得到一个id数值 

            message.Attachments.Add(p_w_upload1); 

 

 

 

 

            //string name = System.IO.Path.GetFileName(FileUpload1.FileName);

 

            //if (string.IsNullOrEmpty(name) && name != "")

            //    message.Attachments.Add(new System.Net.Mail.Attachment(name));

            try{

            client.Send(message);//发送邮件

            }

            catch(Exception e)

            {=-

                MessageBox.Show("邮件发送失败！{0}",e.Message);

            }

            //if(System.IO.File.Exists(name))

            //System.IO.File.Delete(name);