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);
        }
    }
}