.net 发送邮件 备忘

 System.Net.Mail.SmtpClient client  =   new  SmtpClient();
        client.Host  =   " smtp.163.com " ;
        client.UseDefaultCredentials  =   false ;
        client.Credentials  =   new  System.Net.NetworkCredential( " yuhai717 " ,  " ********* " );
         // 星号改成自己邮箱的密码
        client.DeliveryMethod  =  SmtpDeliveryMethod.Network;

        System.Net.Mail.MailMessage message  =   new  MailMessage( " [email protected] " ,  " [email protected] " );
        message.Subject  =   " 测试 " ;
        message.Body  =   @" <br /><br /><br /><br /><br /><br /><br /><br /><br />用自己写的软件发的邮件！ " ;
        message.BodyEncoding  =  System.Text.Encoding.UTF8;
        message.IsBodyHtml  =   true ;
         // 添加附件
        Attachment data  =   new  Attachment( @" F:\图片\001.jpg " , System.Net.Mime.MediaTypeNames.Application.Octet);
        message.Attachments.Add(data);

         try
        {
            client.Send(message);
            ClientScript.RegisterStartupScript( this .GetType(),  " key " ,  " alert('成功') " ,  true ); //  ("Email successfully send.");
        }
         catch  (Exception ex)
        {
            ClientScript.RegisterStartupScript( this .GetType(),  " key " ,  " alert('失败') " ,  true );
        }