C#发送邮件代码

 

using  System;  
using  System.Net;  
using  System.Net.Mail;  
using  System.Net.Mime;  
namespace  Fish 
{  
     ///   <summary>   
     ///  发送邮件的类  
     ///   </summary>   
     public   class  SendMail  
    {  
         private  MailMessage mailMessage;  
         private  SmtpClient smtpClient;  
         private   string  password; // 发件人密码  
         ///   <summary>   
         ///  处审核后类的实例  
         ///   </summary>   
         ///   <param name="To"> 收件人地址 </param>   
         ///   <param name="From"> 发件人地址 </param>   
         ///   <param name="Body"> 邮件正文 </param>   
         ///   <param name="Title"> 邮件的主题 </param>   
         ///   <param name="Password"> 发件人密码 </param>   
         public  SendMail( string  To,  string  From,  string  Body,  string  Title,  string  
Password)  
        {  
            mailMessage  =   new  MailMessage();  
            mailMessage.To.Add(To);  
            mailMessage.From  =   new  System.Net.Mail.MailAddress(From);  
            mailMessage.Subject  =  Title;  
            mailMessage.Body  =  Body;  
            mailMessage.IsBodyHtml  =   true ;  
            mailMessage.BodyEncoding  =  System.Text.Encoding.UTF8;  
            mailMessage.Priority  =  System.Net.Mail.MailPriority.Normal;  
             this .password  =  Password;  
        }  
         ///   <summary>   
         ///  添加附件  
         ///   </summary>   
         public   void  Attachments( string  Path)  
        {  
             string [] path  =  Path.Split( ' , ' );  
            Attachment data;  
            ContentDisposition disposition;  
             for  ( int  i  =   0 ; i  <  path.Length; i ++ )  
            {  
                data  =   new  Attachment(path[i], MediaTypeNames.Application.Octet); // 实例化 
附件  
                disposition  =  data.ContentDisposition;  
                disposition.CreationDate  =  System.IO.File.GetCreationTime(path[i]); // 获取 
附件的创建日期  
                disposition.ModificationDate  =  System.IO.File.GetLastWriteTime(path[i]); //  
获取附件的修改日期  
                disposition.ReadDate  =  System.IO.File.GetLastAccessTime(path[i]); // 获取附 
件的读取日期  
                mailMessage.Attachments.Add(data); // 添加到附件中  
            }  
        }  
         ///   <summary>   
         ///  异步发送邮件  
         ///   </summary>   
         ///   <param name="CompletedMethod"></param>   
         public   void  SendAsync(SendCompletedEventHandler CompletedMethod)  
        {  
             if  (mailMessage  !=   null )  
            {  
                smtpClient  =   new  SmtpClient();  
                smtpClient.Credentials  =   new  System.Net.NetworkCredential 
(mailMessage.From.Address, password); // 设置发件人身份的票据  
                smtpClient.DeliveryMethod  =  System.Net.Mail.SmtpDeliveryMethod.Network;  
                smtpClient.Host  =   " smtp. "   +  mailMessage.From.Host;  
                smtpClient.SendCompleted  +=   new  SendCompletedEventHandler 
(CompletedMethod); // 注册异步发送邮件完成时的事件  
                smtpClient.SendAsync(mailMessage, mailMessage.Body);  
            }  
        }  
         ///   <summary>   
         ///  发送邮件  
         ///   </summary>   
         public   void  Send()  
        {  
             if  (mailMessage  !=   null )  
            {  
                smtpClient  =   new  SmtpClient();  
                smtpClient.Credentials  =   new  System.Net.NetworkCredential 
(mailMessage.From.Address, password); // 设置发件人身份的票据  
                smtpClient.DeliveryMethod  =  System.Net.Mail.SmtpDeliveryMethod.Network;  
                smtpClient.Host  =   " smtp. "   +  mailMessage.From.Host;  
                smtpClient.Send(mailMessage);  
            }  
        }  
    }  
}  

引自：http://www.cnblogs.com/mgod/archive/2008/07/17/1244814.html