发送电子邮件到Outlook与ics会议预约
本文关键字:ics 会议 Outlook 电子邮件 | 更新日期: 2023-09-27 17:55:04
我想发送一封邮件与约会'会议(ICS)到Outlook客户端。当用户收到电子邮件时,他应该接受会议邀请,会议自动进入日历,电子邮件被自动删除。
我使用这个代码:
public void Sendmail_With_IcsAttachment()
{
MailMessage msg = new MailMessage();
//Now we have to set the value to Mail message properties
//Note Please change it to correct mail-id to use this in your application
msg.From = new MailAddress("xxxxx@xyz.com", "ABC");
msg.To.Add(new MailAddress("yyyyy@xyz.com", "BCD"));
msg.CC.Add(new MailAddress("zzzzz@xyz.com", "DEF"));// it is optional, only if required
msg.Subject = "Send mail with ICS file as an Attachment";
msg.Body = "Please Attend the meeting with this schedule";
// Now Contruct the ICS file using string builder
StringBuilder str = new StringBuilder();
str.AppendLine("BEGIN:VCALENDAR");
str.AppendLine("PRODID:-//Schedule a Meeting");
str.AppendLine("VERSION:2.0");
str.AppendLine("METHOD:REQUEST");
str.AppendLine("BEGIN:VEVENT");
str.AppendLine(string.Format("DTSTART:{0:yyyyMMddTHHmmssZ}", DateTime.Now.AddMinutes(+330)));
str.AppendLine(string.Format("DTSTAMP:{0:yyyyMMddTHHmmssZ}", DateTime.UtcNow));
str.AppendLine(string.Format("DTEND:{0:yyyyMMddTHHmmssZ}", DateTime.Now.AddMinutes(+660)));
str.AppendLine("LOCATION: " + this.Location);
str.AppendLine(string.Format("UID:{0}", Guid.NewGuid()));
str.AppendLine(string.Format("DESCRIPTION:{0}", msg.Body));
str.AppendLine(string.Format("X-ALT-DESC;FMTTYPE=text/html:{0}", msg.Body));
str.AppendLine(string.Format("SUMMARY:{0}", msg.Subject));
str.AppendLine(string.Format("ORGANIZER:MAILTO:{0}", msg.From.Address));
str.AppendLine(string.Format("ATTENDEE;CN='"{0}'";RSVP=TRUE:mailto:{1}", msg.To[0].DisplayName, msg.To[0].Address));
str.AppendLine("BEGIN:VALARM");
str.AppendLine("TRIGGER:-PT15M");
str.AppendLine("ACTION:DISPLAY");
str.AppendLine("DESCRIPTION:Reminder");
str.AppendLine("END:VALARM");
str.AppendLine("END:VEVENT");
str.AppendLine("END:VCALENDAR");
//Now sending a mail with attachment ICS file.
System.Net.Mail.SmtpClient smtpclient = new System.Net.Mail.SmtpClient();
smtpclient.Host = "localhost"; //-------this has to given the Mailserver IP
smtpclient.Credentials = System.Net.CredentialCache.DefaultNetworkCredentials;
System.Net.Mime.ContentType contype = new System.Net.Mime.ContentType("text/calendar");
contype.Parameters.Add("method", "REQUEST");
contype.Parameters.Add("name", "Meeting.ics");
AlternateView avCal = AlternateView.CreateAlternateViewFromString(str.ToString(), contype);
msg.AlternateViews.Add(avCal);
smtpclient.Send(msg);
}
邮件是正确发送的,但在outlook中(我正在用outlook 2010进行测试),它显示了正文,位置,数据,它显示了日历,但在邮件的日历上方,我看到"无法在日历上找到会议"answers"接受","拒绝"按钮被禁用!
我已经尝试了其他的解决方案,并在网上找到了ex. DDAY。
经过一番挖掘,我找到了解决方案:
你需要将你的eMail的content-class设置为
Content-class: urn:content-classes:calendarmessage
所以把这个添加到你的代码中,它应该可以工作了
msg.Headers.Add("Content-class", "urn:content-classes:calendarmessage");
我想你在两个消息中使用了相同的电子邮件id。From和msg。
msg.From = new MailAddress("xxxxx@xyz.com", "ABC");
msg.To.Add(new MailAddress("yyyy@xyz.com", "BCD"));
我遇到过同样的问题,但在采取不同的电子邮件后得到解决。