将 ics 文件导入 Outlook.AppointmentItem

Question

我有一个 Outlook 2007 加载项，它尝试将 ics 文件导入 Outlook.AppointmentItem 对象，以便我可以读取有关某些约会的属性。目前我无法将 ics 读回内存。关于我做错了什么的任何建议。

Outlook.Application app = new Outlook.Application();
var item = app.Session.OpenSharedItem("C:\\meeting.ics") as Outlook.AppointmentItem;
string meetingBody = item.Body; //<--*my item is null*

谢谢

Answer 1

我认为问题是由于 AppointmentItem 和 MeetingItem 是不同的类，因此您无法直接将一个类转换为另一个类。您可以尝试以下操作并检查它是否有效吗？

var item = app.Session.OpenSharedItem(@"C:\meeting.ics") as Outlook.AppointmentItem;

Answer 2

这可能是因为该 ics 文件仅呈现会议项目而不是约会项目。据我所知，您可以尝试使用如下代码，

Outlook.MeetingItem item = app.Session.OpenSharedItem(@"C:\SomeMeeting.ics") as Outlook.MeetingItem;

如果您对此有任何疑问，请随时跟进。

http://social.msdn .microsoft.com/Forums/en-GB/vsto/thread/f98bfa75-a995-403e-a3fc-5be3a37511d7

Answer 3

只需检查其类型

            Set attObj = ns.OpenSharedItem(strFilename)                

            Select Case TypeName(attObj)
                Case "MeetingItem"
                    Dim miNewMeetingItem As Outlook.MeetingItem
                    Set miNewMeetingItem = attObj
                    ...
                Case "AppointmentItem"
                    Dim miNewAppointmentItem As Outlook.AppointmentItem
                    Set miNewAppointmentItem = attObj
                    ...
                Case Else
                    Dim miNew As Outlook.MailItem
                    Set miNew = attObj
                    ...
            End Select

            Set attObj = Nothing