Issue with Graph API for Teams getting the onlineMeetingId.

Question

I'm developing an attendance tool for meeting in Microsoft Teams in .NET MAUI, to do that, I need to obtain the meetingAttendanceReport to be able to retrieve the data of each meeting. To get that report I need the onlineMeetingId and the reportId. In this app, I retrieve all the events in the user calendar, select one, and get the ID of that event. But when I try to use that ID in the Get onlineMeeting request I get a NullExceptionError, meaning that the method didn't retrieve any value. My doubt is that I don't know if the event Id works to get the onlineMeeting request, or what do I need to get it?
I'll attach the method I'm trying to use to get the onlineMeeting request.

Answer 1

Hi @Daniel Ramírez

To retrieve the Online Meeting Id please follow the below steps:

• Get Events where isOnlineMeeting is true
  Use this https://graph.microsoft.com/v1.0/me/events?$select=id,isOnlineMeeting Graph API endpoint
• Now Get Joining web URL
  Use this https://graph.microsoft.com/v1.0/me/events/{event-id} Graph API endpoint to get Join Web URL in API response
• Now use the above Join Web URL to get Online Meeting id
  Use this https://graph.microsoft.com/v1.0/me/onlineMeetings?$filter=JoinWebUrl eq 'Web-Url'

In the response you will get Online Meeting ID. Now you can use this id to get attendance report.
Use this https://graph.microsoft.com/v1.0/me/onlineMeetings/{meetingId}/attendanceReports/{reportId} Graph API endpoint.

Please note: To get online Meeting id for user/{user-id} you need to create Application access Policy.

For more details please refer to the below documentations.

• Obtain Meeting id
• Configure application access to online meetings
• Get meetingAttendanceReport

Hope this helps.

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