VS.NET发送会议邮件程序原码

//**************  发送会议通知  *****************************************************//

    public struct AppointMail
    {
        public string from;     //发件人邮箱   
        public string to;        //收件人邮箱;号分隔的一个串   
        public string fromDisplayName; //发件人姓名   
        public string subject;  //标题   
        public string body;     //正文   
        public string location; //地点   
        public DateTime sTime;  //开始时间   
        public DateTime eTime;  //结束时间
    }

    public static void SendAppointMail(AppointMail mail)
    {
        MailMessage msg = new MailMessage();
        MailAddressCollection attendeeList = new MailAddressCollection();
        string[] sendTo = mail.to.Split(';');
        foreach (string temp in sendTo)
        {
            if (temp.Trim().Length > 3)
            {
                msg.Bcc.Add(temp);
                attendeeList.Add(temp);
            }
        }
        //  Set up the different mime types contained in the message       
        System.Net.Mime.ContentType textType = new System.Net.Mime.ContentType("text/plain");
        System.Net.Mime.ContentType HTMLType = new System.Net.Mime.ContentType("text/html");
        System.Net.Mime.ContentType RTFType = new System.Net.Mime.ContentType("text/rtf");
        System.Net.Mime.ContentType calendarType = new System.Net.Mime.ContentType("text/calendar;");
        //Add parameters to the calendar header       
        calendarType.Parameters.Add("method", "REQUEST");
        calendarType.Parameters.Add("name", "meeting.ics");
        //create the Body in VCALENDAR format       
        string calDateFormat = "yyyyMMddTHHmmssZ";
        string bodyCalendar = "BEGIN:VCALENDAR\r\nMETHOD:REQUEST\r\nPRODID:Microsoft CDO for Microsoft Exchange\r\nVERSION:2.0\r\nBEGIN:VTIMEZONE\r\nTZID:(GMT-06.00) Central Time (US & Canada)\r\nX-MICROSOFT-CDO-TZID:11\r\nBEGIN:STANDARD\r\nDTSTART:16010101T020000\r\nTZOFFSETFROM:-0500\r\nTZOFFSETTO:-0600\r\nRRULE:FREQ=YEARLY;WKST=MO;INTERVAL=1;BYMONTH=11;BYDAY=1SU\r\nEND:STANDARD\r\nBEGIN:DAYLIGHT\r\nDTSTART:16010101T020000\r\nTZOFFSETFROM:-0600\r\nTZOFFSETTO:-0500\r\nRRULE:FREQ=YEARLY;WKST=MO;INTERVAL=1;BYMONTH=3;BYDAY=2SU\r\nEND:DAYLIGHT\r\nEND:VTIMEZONE\r\nBEGIN:VEVENT\r\nDTSTAMP:{8}\r\nDTSTART:{0}\r\nSUMMARY:{6}\r\nUID:{5}\r\nATTENDEE;ROLE=REQ-PARTICIPANT;PARTSTAT=NEEDS-ACTION;RSVP=TRUE;CN=\"{9}\":MAILTO:{9}\r\nACTION;RSVP=TRUE;CN=\"{4}\":MAILTO:{4}\r\nORGANIZER;CN=\"{3}\":mailto:{4}\r\nLOCATION:{2}\r\nDTEND:{1}\r\nDESCRIPTION:{7}\\N\r\nSEQUENCE:1\r\nPRIORITY:5\r\nCLASS:\r\nCREATED:{8}\r\nLAST-MODIFIED:{8}\r\nSTATUS:CONFIRMED\r\nTRANSP:OPAQUE\r\nX-MICROSOFT-CDO-BUSYSTATUS:BUSY\r\nX-MICROSOFT-CDO-INSTTYPE:0\r\nX-MICROSOFT-CDO-INTENDEDSTATUS:BUSY\r\nX-MICROSOFT-CDO-ALLDAYEVENT:FALSE\r\nX-MICROSOFT-CDO-IMPORTANCE:1\r\nX-MICROSOFT-CDO-OWNERAPPTID:-1\r\nX-MICROSOFT-CDO-ATTENDEE-CRITICAL-CHANGE:{8}\r\nX-MICROSOFT-CDO-OWNER-CRITICAL-CHANGE:{8}\r\nBEGIN:VALARM\r\nACTION:DISPLAY\r\nDESCRIPTION:REMINDER\r\nTRIGGER;RELATED=START:-PT00H15M00S\r\nEND:VALARM\r\nEND:VEVENT\r\nEND:VCALENDAR\r\n";
        bodyCalendar = string.Format(bodyCalendar,
            mail.sTime.ToUniversalTime().ToString(calDateFormat),
            mail.eTime.ToUniversalTime().ToString(calDateFormat),
            mail.location,
            mail.fromDisplayName,
            mail.from,
            Guid.NewGuid().ToString("B"),
            mail.subject, //summary       
            mail.body,//正文       
            DateTime.Now.ToUniversalTime().ToString(calDateFormat),
            attendeeList.ToString(),
            mail.body
            );
        AlternateView calendarView = AlternateView.CreateAlternateViewFromString(bodyCalendar, calendarType);
        calendarView.TransferEncoding = System.Net.Mime.TransferEncoding.SevenBit;
        msg.AlternateViews.Add(calendarView);
        //  Adress the message       
        msg.From = new MailAddress(mail.from, mail.fromDisplayName);
        msg.IsBodyHtml = true;
        SmtpClient smtpclnt = new SmtpClient();
        smtpclnt.Host = ConfigurationManager.AppSettings["MySmtp"].ToString();
        smtpclnt.Send(msg);
    }