我只是想知道是否可以发送会议请求给没有在服务器上安装Outlook并使用COM Interop（我想避免在服务器上不惜一切代价）的人。在没有Outlook的情况下发送Outlook会议请求？
我们在Windows 2003域中拥有Exchange 2003，所有用户都是域用户。我想我可以发送'围绕iCal/vCal或其他东西，但我想知道是否有一个适当的标准方式通过Exchange发送会议请求没有Outlook？
这是C＃/ .net，如果它很重要。
发送会议请求到Outlook（有它识别）的方式是这样的：
multipart/alternative邮件：
text/html（或任何你喜欢） - 这是显示为“普通”邮件阅读器或一个回落和含有事件摘要以人类可读形式提供text/calendar; method=REQUEST保存了ics文件的内容（头文件method参数必须与ics中的方法相匹配）。注意正确的文本编码，声明charset标题参数不会受到伤害。第3部分：可选地，附加.ics文件本身，所以普通邮件阅读器可以为用户提供点击的东西。 Outlook并不需要附件，因为它只是读取text/calendar部件。如需帮助了解ics文件格式的详细信息和特性，请务必访问iCalendar Specification Excerpts by Masahide Kanzaki。它们在黑暗中是一道亮光，远胜于通过RFC 2445啃咬你的方式。但是，再一次，也许有一个方便的.NET库存在。
查看DDay。sourceforge上的iCal C＃库：
http://sourceforge.net/projects/dday-ical/
然后通过阅读CodeProject上的文章：
http://www.codeproject.com/Articles/17980/Adding-iCalendar-Support-to-Your-Program-Part-1
而且阅读：
Export event with C# to iCalendar and vCalendar format
下面的代码会以这样的方式发送会议请求Outlook将呈现接受/拒绝按钮。
请注意，每次会议的UID必须是唯一的，我使用了GUID。
另请注意，您需要更换CREATED，DTSTART，DTEND，DTSTAMP，最后修改。这些是UTC日期/时间。
var m = new MailMessage();
m.Subject = "Meeting";
m.Body = "";
string iCal =
@"BEGIN:VCALENDAR
PRODID:-//Microsoft Corporation//Outlook 14.0 MIMEDIR//EN
VERSION:2.0
METHOD:PUBLISH
X-MS-OLK-FORCEINSPECTOROPEN:TRUE
BEGIN:VEVENT
CLASS:PUBLIC
CREATED:20140423T045933Z
DESCRIPTION:desc
DTEND:20140430T080000Z
DTSTAMP:20140423T045933Z
DTSTART:20140430T060000Z
LAST-MODIFIED:20140423T045933Z
LOCATION:location...
PRIORITY:5
SEQUENCE:0
SUMMARY;LANGUAGE=en-us:Summary...
TRANSP:OPAQUE
UID:D8BFD357-88A7-455C-86BC-C2CECA9AC5C6
X-MICROSOFT-CDO-BUSYSTATUS:BUSY
X-MICROSOFT-CDO-IMPORTANCE:1
X-MICROSOFT-DISALLOW-COUNTER:FALSE
X-MS-OLK-AUTOFILLLOCATION:FALSE
X-MS-OLK-CONFTYPE:0
BEGIN:VALARM
TRIGGER:-PT60M
ACTION:DISPLAY
DESCRIPTION:Reminder
END:VALARM
END:VEVENT
END:VCALENDAR";
using (var iCalView = AlternateView.CreateAlternateViewFromString(iCal, new System.Net.Mime.ContentType("text/calendar")))
{
m.AlternateViews.Add(iCalView);
var c = new SmtpClient();
// Send message
c.Send(m);
}
这里假设你有你的配置文件配置本地SMTP服务器：
<system.net>
<mailSettings>
<smtp deliveryMethod="Network" from="[email protected]">
<network defaultCredentials="true" host="smtp.example.local" />
</smtp>
</mailSettings>
</system.net>
iCalendar是一个伟大的通用解决方案，以及DDay.iCal库是做到这一点的好方法从.NET，但我相信Exchange Web Services（EWS）是在原始问题（Exchange，C＃/。NET）的上下文中更好的解决方案。
如果您使用.NET语言（例如C＃），则应使用EWS Managed API包装器，这大大简化了使用EWS的工作。
从the docs，这里是如何使用EWS托管API来创建一个会议，并请求发送到受邀者：
// Create the appointment.
Appointment appointment = new Appointment(service);
// Set properties on the appointment. Add two required attendees and one optional attendee.
appointment.Subject = "Status Meeting";
appointment.Body = "The purpose of this meeting is to discuss status.";
appointment.Start = new DateTime(2009, 3, 1, 9, 0, 0);
appointment.End = appointment.Start.AddHours(2);
appointment.Location = "Conf Room";
appointment.RequiredAttendees.Add("[email protected]");
appointment.RequiredAttendees.Add("[email protected]");
appointment.OptionalAttendees.Add("[email protected]");
// Send the meeting request to all attendees and save a copy in the Sent Items folder.
appointment.Save(SendInvitationsMode.SendToAllAndSaveCopy);
您发送的邮件会议请求到Outlook不能以这种方式发送待办事项。 您可以发送“预约”，但这些会在outlook中显示为必须“盲目”接受的.ics附件。
会议请求出现在outlook中，预览效果不错，可以接受或拒绝。 发送程序可能会在发送后修改或取消会议。
它easieset创建与DDay.iCal .Net Library
下面的代码有效iCal项目是一个完整的工作示例。它使用有效的iCal会议请求构建一个字符串并通过邮件发送。
的代码创建一个电子邮件与：
的代码显示了如何添加：
一些重要的细节：
关于途观的具体细节解释.ics文件详见[MS-OXCICAL]: iCalendar to Appointment Object Conversion Algorithm
我们将使用这些组件：
using System;
using System.IO;
using System.Net.Mail;
using DDay.iCal;
using DDay.iCal.Serialization.iCalendar;
对于DDay.iCal其足够的下载DDay.iCal binary Files。如果您想添加一些功能，最好查看DDay.iCal源代码，因为文档已过时，并且源代码包含非常完整的测试，可以体验其所有功能。
const string filepath = @"C:\temp\ical.test.ics";
// use PUBLISH for appointments
// use REQUEST for meeting requests
const string METHOD = "REQUEST";
// Properties of the meeting request
// keep guid in sending program to modify or cancel the request later
Guid uid = Guid.Parse("2B127C67-73B3-43C5-A804-5666C2CA23C9");
string VisBetreff = "This is the subject of the meeting request";
string TerminVerantwortlicherEmail = "[email protected]";
string bodyPlainText = "This is the simple iCal plain text msg";
string bodyHtml = "This is the simple <b>iCal HTML message</b>";
string location = "Meeting room 101";
// 1: High
// 5: Normal
// 9: low
int priority = 1;
//=====================================
MailMessage message = new MailMessage();
message.From = new MailAddress("[email protected]");
message.To.Add(new MailAddress(TerminVerantwortlicherEmail));
message.Subject = "[VIS-Termin] " + VisBetreff;
// Plain Text Version
message.Body = bodyPlainText;
// HTML Version
string htmlBody = bodyHtml;
AlternateView HTMLV = AlternateView.CreateAlternateViewFromString(htmlBody,
new System.Net.Mime.ContentType("text/html"));
// iCal
IICalendar iCal = new iCalendar();
iCal.Method = METHOD;
iCal.ProductID = "My Metting Product";
// Create an event and attach it to the iCalendar.
Event evt = iCal.Create<Event>();
evt.UID = uid.ToString();
evt.Class = "PUBLIC";
// Needed by Outlook
evt.Created = new iCalDateTime(DateTime.Now);
evt.DTStamp = new iCalDateTime(DateTime.Now);
evt.Transparency = TransparencyType.Transparent;
// Set the event start/end times
evt.Start = new iCalDateTime(2014, 10, 3, 8, 0, 0);
evt.End = new iCalDateTime(2014, 10, 3, 8, 15, 0);
evt.Location = location;
//var organizer = new Organizer("[email protected]");
//evt.Organizer = organizer;
// Set the longer description of the event, plain text
evt.Description = bodyPlainText;
// Event description HTML text
// X-ALT-DESC;FMTTYPE=text/html
var prop = new CalendarProperty("X-ALT-DESC");
prop.AddParameter("FMTTYPE", "text/html");
prop.AddValue(bodyHtml);
evt.AddProperty(prop);
// Set the one-line summary of the event
evt.Summary = VisBetreff;
evt.Priority = priority;
//--- attendes are optional
IAttendee at = new Attendee("mailto:[email protected]");
at.ParticipationStatus = "NEEDS-ACTION";
at.RSVP = true;
at.Role = "REQ-PARTICIPANT";
evt.Attendees.Add(at);
// Let’s also add an alarm on this event so we can be reminded of it later.
Alarm alarm = new Alarm();
// Display the alarm somewhere on the screen.
alarm.Action = AlarmAction.Display;
// This is the text that will be displayed for the alarm.
alarm.Summary = "Upcoming meeting: " + VisBetreff;
// The alarm is set to occur 30 minutes before the event
alarm.Trigger = new Trigger(TimeSpan.FromMinutes(-30));
//--- Attachments
string filename = "Test.docx";
// Add an attachment to this event
IAttachment attachment = new DDay.iCal.Attachment();
attachment.Data = ReadBinary(@"C:\temp\Test.docx");
attachment.Parameters.Add("X-FILENAME", filename);
evt.Attachments.Add(attachment);
iCalendarSerializer serializer = new iCalendarSerializer();
serializer.Serialize(iCal, filepath);
// the .ics File as a string
string iCalStr = serializer.SerializeToString(iCal);
// .ics as AlternateView (used by Outlook)
// text/calendar part: method=REQUEST
System.Net.Mime.ContentType calendarType =
new System.Net.Mime.ContentType("text/calendar");
calendarType.Parameters.Add("method", METHOD);
AlternateView ICSview =
AlternateView.CreateAlternateViewFromString(iCalStr, calendarType);
// Compose
message.AlternateViews.Add(HTMLV);
message.AlternateViews.Add(ICSview); // must be the last part
// .ics as Attachment (used by mail clients other than Outlook)
Byte[] bytes = System.Text.Encoding.ASCII.GetBytes(iCalStr);
var ms = new System.IO.MemoryStream(bytes);
var a = new System.Net.Mail.Attachment(ms,
"VIS-Termin.ics", "text/calendar");
message.Attachments.Add(a);
// Send Mail
SmtpClient client = new SmtpClient();
client.Send(message);
这里ReadBinary（）函数：
private static byte[] ReadBinary(string fileName)
{
byte[] binaryData = null;
using (FileStream reader = new FileStream(fileName,
FileMode.Open, FileAccess.Read))
{
binaryData = new byte[reader.Length];
reader.Read(binaryData, 0, (int)reader.Length);
}
return binaryData;
}
其最简单的配置SmtpClient在配置文件中是这样的：
<configuration>
...
<system.net>
<mailSettings>
<smtp>
<network host="mysmtp.server.com" port="25" userName="mySmtpUserName" password="myPassword" />
</smtp>
</mailSettings>
</system.net>
...
的时候，你选择了等待的时间让我认为我的建议不完全是你想到的。你有没有起作用？ – Tomalak 2009-01-23 10:53:55
我刚才没有时间去测试它。对它的快速测试似乎奏效，并且我发送了一个Outlook会议邀请函到一个启用了POP3的帐户以获得“原始转储”。这两位对我来说足够好，因为我只需要发送会议，但不关心回复 – 2009-01-23 13:42:29
无论如何，您的回答非常有帮助，非常感谢！ – 2009-01-23 13:43:31