using System;using System.Collections.Generic;using System.Net;using System.Net.Mail;using System.Text;namespace Common{    /// 
    /// 基于system.net.mail发送邮件，支持附件    /// 
    public class NetSendMail    {        public static void MailSend(string mailFrom, string maiFromlAccount, string mailFromPwd, string mailSmtpServer, IList
     
       mailTo, IList
      
        mailCC, IList
       
         mailBCC, string mailTitle, string mailContent, IList
        
          mailAttachments, System.Text.Encoding encoding, bool isBodyHtml)        {            MailMessage message = new MailMessage();            if (mailFrom.Trim() == "")            {                throw new Exception("发送邮件不可以为空");            }            message.From = new MailAddress(mailFrom);            if (mailTo.Count <= 0)            {                throw new Exception("接收邮件不可以为空");            }            foreach (string s in mailTo)            {                message.To.Add(new MailAddress(s));            }            if (mailCC.Count > 0)            {                foreach (string s in mailCC)                {                    message.CC.Add(new MailAddress(s));                }            }            if (mailBCC.Count > 0)            {                foreach (string s in mailBCC)                {                    message.Bcc.Add(new MailAddress(s));                }            }            message.Subject = mailTitle;            message.Body = mailContent;            message.BodyEncoding = encoding;   //邮件编码            message.IsBodyHtml = isBodyHtml;      //内容格式是否是html            message.Priority = MailPriority.High;  //设置发送的优先集            //附件            foreach (string att in mailAttachments)            {                message.Attachments.Add(new Attachment(att));            }            SmtpClient smtpClient = new SmtpClient();            smtpClient.Host = mailSmtpServer;            smtpClient.Credentials = new NetworkCredential(maiFromlAccount, mailFromPwd);            smtpClient.Timeout = 1000;            smtpClient.EnableSsl = false;        //不使用ssl连接            smtpClient.Send(message);        }        public static void MailSendText(string mailFrom, string maiFromlAccount, string mailFromPwd, string mailSmtpServer, IList
         
           mailTo, IList
          
            mailCC, IList
           
             mailBCC, string mailTitle, string mailContent) { List
            
              attList = new List
             
              (); MailSend(mailFrom, maiFromlAccount, mailFromPwd, mailSmtpServer, mailTo, mailCC, mailBCC, mailTitle, mailContent, attList, Encoding.UTF8, false); } public static void MailSendHTML(string mailFrom, string maiFromlAccount, string mailFromPwd, string mailSmtpServer, IList
              
                mailTo, IList
               
                 mailCC, IList
                
                  mailBCC, string mailTitle, string mailContent) { List
                 
                   attList = new List
                  
                   (); MailSend(mailFrom, maiFromlAccount, mailFromPwd, mailSmtpServer, mailTo, mailCC, mailBCC, mailTitle, mailContent, attList, Encoding.UTF8, true); } }}