C# SMTP Attachment

添加引用using System.Net.Mail;using System.Net;

定义常量

        const string ADDRESS_FROM = userid@gmail.com;
        const string ADDRESS_TO = userid2@gmail.com;
        const string SMTP_SERVER = "smtp.gmail.com";
        const string USER_ID = "userid";
        const string PASSWORD = "123456";
        const string Mail_Title = "测试邮件";
        const string Mail_Text = "内容";
        const string Mail_AnnexPath = "c:\\1.jpg";
        const int PORT = 587;

实现方法

        public void SendMail(string smtpServer, int port)
        {
            SmtpClient mailClient = new SmtpClient(smtpServer, PORT);
            mailClient.EnableSsl = true;
            NetworkCredential crendetial = new NetworkCredential(USER_ID, PASSWORD);
            mailClient.Credentials = crendetial;
            MailMessage message = new MailMessage(ADDRESS_FROM, ADDRESS_TO, Mail_Title, Mail_Text);
            Attachment attachment = new Attachment(Mail_AnnexPath);
            message.Attachments.Add(attachment);
            mailClient.Send(message);
        }

调用方法

SendMail(SMTP_SERVER, PORT);