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 = new MailMessage();  
        private SmtpClient smtpClient;  
        private string password;//发件人密码    
        /**/ 
        /// <summary>    
        /// 设置收件人、发件人信息与邮件内容、标题    
        /// </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 void Mail(string To, string From, string Body, string Title, string Password)  
        {  
            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);  
            }  
        }  
        /// <summary>  
        /// 根据索引删除附件  
        /// </summary>  
        /// <param name="Id"></param>  
        public void DeleteAttachments(int Id)  
        {  
            mailMessage.Attachments.RemoveAt(Id);  
        }  
    }  
}