can't add attachment to calendar event

问题

I am trying to add attachment to calendar using Office 365 Starter Project for ASP.NET MVC https://github.com/OfficeDev/O365-ASPNETMVC-Start. As it requires event id I can't add using method AddCalendarEventAsync. So I'm trying to update event using below code:

var outlookServicesClient = await AuthenticationHelper.EnsureOutlookServicesClientCreatedAsync("Calendar");
var thisEventFetcher = outlookServicesClient.Me.Calendar.Events.GetById(selectedEventId);
IEvent eventToUpdate = await thisEventFetcher.ExecuteAsync();

But 'eventToUpdate' has not Attachment set property. Please could you check this and explain how to add attachment to calendar.

Thank you.

回答1:

I tested add the attachment to the event with outlookservicesclient, but can't find attachment even the event created successfully .It seems outlookservicesclient not includes the attachment data . If you use Fiddler , you couldn't find the attachment data in post request .

You could try to add attachment to event with Graph API :

POST https://graph.microsoft.com/v1.0/me/messages/<id>/attachments
Content-type: application/json
Content-length: 142

{
   "@odata.type": "#microsoft.graph.fileAttachment",
   "name": "name-value",
   "contentBytes": "contentBytes-value"
}

Please click here for detail information .

回答2:

Yes @nan-yu you were right can't find attachment data in n fiddler. As per documentation https://msdn.microsoft.com/en-us/office/office365/api/calendar-rest-operations#Createattachments it requires eventid to save attachment. So I was using code in 'UpdateCalendarEventAsync' method. Just like how attachment works with emails, you save as draft and add attachment to that draft. Below code adds attachment but when I fetch event using eventid the attachment property has no data.

Event newEvent = new Event
            {
             Subject = Subject,
                Location = location,
                Attendees = attendees,
                Start = start,
                End = end,
                Body = body
            };

            newEvent.Start = (DateTimeOffset?)CalcNewTime(newEvent.Start, start);
            newEvent.End = (DateTimeOffset?)CalcNewTime(newEvent.End, end);

            try
            {
                // Make sure we have a reference to the Outlook Services client
                var outlookServicesClient = await AuthenticationHelper.EnsureOutlookServicesClientCreatedAsync("Calendar");

                // This results in a call to the service.
                await outlookServicesClient.Me.Events.AddEventAsync(newEvent);
                newEventId = newEvent.Id;
                newEvent.Attachments = attachments;
                newEvent.HasAttachments = true;
                await ((IEventFetcher)newEvent).ExecuteAsync();
                await newEvent.UpdateAsync(true);
                var thisEventFetcher = outlookServicesClient.Me.Calendar.Events.GetById(newEventId);
                IEvent eventToUpdate = await thisEventFetcher.ExecuteAsync();
                await outlookServicesClient.Context.SaveChangesAsync();
            }

回答3:

var thisEventFetcher = outlookServicesClient.Me.Calendar.Events.GetById(eventID);
Attachment attachment = new FileAttachment
                                {
                                    Name = "test",
                                    ContentBytes = File.ReadAllBytes(@"D:\test.jpeg"),
                                    ContentType = "image/jpeg"
                                };
                                await thisEventFetcher.Attachments.AddAttachmentAsync(attachment);

来源：https://stackoverflow.com/questions/35937288/cant-add-attachment-to-calendar-event

标签

office365

office365api