.net 发送电子邮件

using  System;
using  System.Collections.Generic;
using  System.Text;
using  System.Net.Mail;
using  System.Net;

namespace  LFSYNC
{
     class  EMail
    {
         private   string  _from;
         public   string  From
        {
             get  {  return  _from; }
             set  { _from  =  value; }
        }

         private   string  _to;
         public   string  To
        {
             get  {  return  _to; }
             set  { _to  =  value; }
        }

         private   string  _subject;
         public   string  Subject
        {
             get  {  return  _subject; }
             set  { _subject  =  value; }
        }

         private   string  _body;
         public   string  Body
        {
             get { return  _body;}
             set {_body = value;}
        }

         private   string  _server;
         public   string  Server
        {
             get  {  return  _server; }
             set  { _server  =  value; }
        }

         private   string  _pwd;
         public   string  Pwd
        {
             get  {  return  _pwd; }
             set  { _pwd  =  value; }
        }

         ///   <param name="to"> 收件人邮件地址 </param>  
         ///   <param name="from"> 发件人邮件地址 </param>  
         ///   <param name="subject"> 邮件主题 </param>  
         ///   <param name="body"> 邮件内容 </param>  
         ///   <param name="username"> 登录smtp主机时用到的用户名,注意是邮件地址'@'以前的部分 </param>  
         ///   <param name="password"> 登录smtp主机时用到的用户密码 </param>  
         ///   <param name="smtpHost"> 发送邮件用到的smtp主机 </param>  
         public  EMail( string  from,  string  to,  string  subject,  string  body,  string  server,  string  pwd)
        {
             this .From  =  from;
             this .To  =  to;
             this .Subject  =  subject;
             this .Body  =  body;
             this .Server  =  server;
             this .Pwd  =  pwd;
        }

         ///   <summary>  
         ///  发送邮件 
         ///   </summary>  
         public    void  Send()
        {
          
             try
            {
                MailAddress mailfrom  =   new  MailAddress( this .From);
                MailAddress mailto  =   new  MailAddress( this .To);
                MailMessage message  =   new  MailMessage(mailfrom, mailto);
                message.Subject  =   this .Subject; // 设置邮件主题 
                message.IsBodyHtml  =   false ; // 设置邮件正文为html格式 
                message.Body  =   this .Body; // 设置邮件内容 
                SmtpClient client  =   new  SmtpClient( this .Server);
                 // 设置发送邮件身份验证方式 
                 // 注意如果发件人地址是[email protected]，则用户名是abc而不是[email protected] 
                client.Credentials  =   new  NetworkCredential( this .From.Split( new   char [] {  ' @ '  })[ 0 ],  this .Pwd);
                client.Send(message);
            }
             catch (Exception ex)
            {
                 throw  ex;
            }
        } 
    }
}