C#实现SMTP邮件发送程序实例

通常来说邮件发送功能在网站应用程序中经常会用到，包括大家经常看到的博客，在添加评论后，系统会自动发送邮件通知到我邮箱的，把系统发送邮件的功能整理了下，本文展示了一个客户端demo，希望对有需要的朋友有所帮助。运行效果如下图所示：

核心代码如下：

using system;
using system.net;
using system.net.mail;
using system.text;
namespace hc.email
{
    /// <summary>
    ///     整站邮件服务类
    /// </summary>
    public class emailservice
    {
        /// <summary>
        ///     发送邮件
        /// </summary>
        /// <param name="mailto">收件人
        /// <param name="subject">主题
        /// <param name="body">内容
        /// <returns></returns>
        public static bool send(string mailto, string subject, string body)
        {
            return send(new[] {mailto}, null, subject, body, true, null);
        }
        /// <summary>
        ///     发送邮件
        /// </summary>
        /// <param name="mailto">收件人
        /// <param name="subject">主题
        /// <param name="body">内容
        /// <returns></returns>
        public static bool send(string[] mailto, string subject, string body)
        {
            return send(mailto, null, subject, body, true, null);
        }
 
        /// <summary>
        ///     发送邮件
        /// </summary>
        /// <param name="mailto">收件人
        /// <param name="subject">主题
        /// <param name="body">内容
        /// <param name="attachmentspath">附件
        /// <returns></returns>
        public static bool send(string[] mailto, string subject, string body, string[] attachmentspath)
        {
            return send(mailto, null, subject, body, true, attachmentspath);
        }
 
        /// <summary>
        ///     发送邮件
        /// </summary>
        /// <param name="mailto">收件人
        /// <param name="mailccarray">抄送
        /// <param name="subject">主题
        /// <param name="body">内容
        /// <param name="isbodyhtml">是否html
        /// <param name="attachmentspath">附件
        /// <returns></returns>
        public static bool send(string[] mailto, string[] mailccarray, string subject,string body, bool isbodyhtml,
                                string[] attachmentspath)
        {
            try
            {
                var config = confighelper.getconfig<emailconfig>();
                if (string.isnullorempty(config.host) ||string.isnullorempty(config.username) ||
                    string.isnullorempty(config.port) ||string.isnullorempty(config.password))
                {
                    //todo:记录日志
                    return false;
                }
                var @from = new mailaddress(config.mailfrom); //使用指定的邮件地址初始化mailaddress实例
                var message = new mailmessage(); //初始化mailmessage实例
                //向收件人地址集合添加邮件地址
                if (mailto != null)
                {
                    foreach (string t in mailto)
                    {
                        message.to.add(t);
                    }
                }
 
                //向抄送收件人地址集合添加邮件地址
                if (mailccarray != null)
                {
                    foreach (string t in mailccarray)
                    {
                        message.cc.add(t);
                    }
                }
                //发件人地址
                message.from = @from;
 
                //电子邮件的标题
                message.subject = subject;
 
                //电子邮件的主题内容使用的编码
                message.subjectencoding = encoding.utf8;
 
                //电子邮件正文
                message.body = body;
 
                //电子邮件正文的编码
                message.bodyencoding = encoding.default;
                message.priority = mailpriority.high;
                message.isbodyhtml = isbodyhtml;
 
                //在有附件的情况下添加附件
                if (attachmentspath != null && attachmentspath.length > 0)
                {
                    foreach (string path in attachmentspath)
                    {
                        var attachfile = new attachment(path);
                        message.attachments.add(attachfile);
                    }
                }
                try
                {
                    var smtp = new smtpclient
                        {
                            credentials = new networkcredential(config.username, config.password),
                            host = config.host,
                            port = convert.toint32(config.port)
                        };
 
                    //将邮件发送到smtp邮件服务器
                    smtp.send(message);
                    //todo:记录日志
                    return true;
                }
                catch (smtpexception ex)
                {
                    //todo:记录日志
                    return false;
                }
            }
            catch (smtpexception ex)
            {
                //todo:记录日志
                return false;
            }
        }
    }
}

完整实例代码点击此处本站下载。

希望本文所述对大家的c#程序设计有所帮助