C# 发送带附件邮件-优快云博客

本文介绍了一个使用 C# 实现的发送带附件电子邮件的类。该类通过提供收件人地址、发件人地址、邮件正文、主题及密码等参数来初始化，并支持添加多个附件。此外还提供了同步和异步两种发送方式。

实现代码：

Codeusing System;
using System.Net;
using System.Net.Mail;
using System.Net.Mime;
namespace Fish
{
    /**/
    /// <summary> 
    /// 发送邮件[you jian]的类 
    /// </summary> 
    public class SendMail
    {
        private MailMessage mailMessage;
        private SmtpClient smtpClient;
        private string password;//发件人密码[mi ma] 
        /**/
        /// <summary> 
        /// 处审核后类的实例 
        /// </summary> 
        /// <param name="To">收件人地址[di zhi]</param> 
        /// <param name="From">发件人地址[di zhi]</param> 
        /// <param name="Body">邮件[you jian]正文[zheng wen]</param> 
        /// <param name="Title">邮件[you jian]的主题</param> 
        /// <param name="Password">发件人密码[mi ma]</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;
            Console.WriteLine("send mail sucssesful");
        }
        /**/
        /// <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[shi li hua]附件 
                disposition = data.ContentDisposition; 
                disposition.CreationDate = System.IO.File.GetCreationTime(path[i]);//获取附件的创建日期[chuang jian ri qi] 
                disposition.ModificationDate = System.IO.File.GetLastWriteTime(path[i]);//获取附件的修改[xiu gai]日期 
                disposition.ReadDate = System.IO.File.GetLastAccessTime(path[i]);//获取附件的读取[du qu]日期 
                mailMessage.Attachments.Add(data);//添加到附件中 
            } 
        }
        /**/
        /// <summary> 
        /// 异步[yi bu]发送邮件[you jian] 
        /// </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[she zhi]发件人身份[shen fen]的票据 
                smtpClient.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;
                smtpClient.Host = "smtp." + mailMessage.From.Host;
                smtpClient.SendCompleted += new SendCompletedEventHandler(CompletedMethod);//注册[zhu ce]异步[yi bu]发送邮件[you jian]完成时的事件[shi jian] 
                smtpClient.SendAsync(mailMessage, mailMessage.Body);
            }
        }
        /**/
        /// <summary> 
        /// 发送邮件[you jian] 
        /// </summary> 
        public void Send()
        {
            if (mailMessage != null)
            {
                smtpClient = new SmtpClient();
                smtpClient.Credentials = new System.Net.NetworkCredential(mailMessage.From.Address, password);//设置[she zhi]发件人身份[shen fen]的票据 
                smtpClient.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;
                smtpClient.Host = "smtp." + mailMessage.From.Host;
                smtpClient.Send(mailMessage);
            }
        }
    }
}