Sample code for 30+ languages & platforms
Dart Requires Chilkat v11.0.0+

MS Teamwork: Update an Online Meeting

See more Microsoft Teams Examples

Demonstrates how to update a Microsoft Teamwork Online Meeting

Note:If using Application access (i.e. client credentials) which is what this example is doing, then you'll need to "Configure application access to online meetings or virtual events" See https://learn.microsoft.com/en-us/graph/cloud-communication-online-meeting-application-access-policy#configure-application-access-policy

For example, here's our Powershell session to setup the policy.

Windows PowerShell
Copyright (C) Microsoft Corporation. All rights reserved.
Try the new cross-platform PowerShell
https://aka.ms/pscore6 

PS C:\WINDOWS\system32> Install-Module -Name PowerShellGet -Force -AllowClobber
PS C:\WINDOWS\system32> Install-Module -Name MicrosoftTeams -Force -AllowClobber
PS C:\WINDOWS\system32> Connect-MicrosoftTeams

Account              Environment Tenant                               TenantId
-------              ----------- ------                               --------
admin@chilkat365.com AzureCloud  112d7ed6-71bf-4eba-a866-738364321bfc 112d7ed6-71bf-4eba-a866-738364321bfc

PS C:\WINDOWS\system32> New-CsApplicationAccessPolicy -Identity Test-Teams-policy -AppIds "e1cd2318-298b-4916-bfd6-78cae9938835" -Description "Want App to be able to work with Teams for a User"

Identity    : Tag:Test-Teams-policy
AppIds      : {e1cd2318-298b-4916-bfd6-78cae9938835}
Description : Want App to be able to work with Teams for a User

PS C:\WINDOWS\system32> Grant-CsApplicationAccessPolicy -PolicyName Test-Teams-policy -Identity "4ee732c3-322e-4a6b-b729-2fd1eb5c6004"
PS C:\WINDOWS\system32>

Chilkat Dart Downloads

Dart
import 'package:chilkat/chilkat.dart';

void main() {
  // This requires the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  final http = CkHttp();

  // Provide the information needed for Chilkat to automatically fetch the OAuth2.0 
  // access token as needed.
  final jsonOAuthCC = CkJsonObject();

  // --------------------------------------------------------------------------------------------------------
  // You'll need to have registered an app in Azure beforehand.
  // 
  // Note: Creating an online meeting requires the following Application permission:  OnlineMeetings.ReadWrite.All
  // 
  // See How to Create an Azure App Registration for OAuth 2.0 Client Credentials
  // --------------------------------------------------------------------------------------------------------

  // Use the values from your App Registration in Azure.
  jsonOAuthCC.updateString('client_id', 'e1cd2318-xxxx-4916-bfd6-xxxxxxxxxxxx');
  jsonOAuthCC.updateString('client_secret', 'K.d8Q~RoJxxxxvCj_u_xxxxxxxxxxxxxxxxxxxxx');

  // You'll always use this scope for client credentials, because the allowed actions
  // are determined by the App Permissions defined when you registered the app in Azure.
  jsonOAuthCC.updateString('scope', 'https://graph.microsoft.com/.default');

  // The token endpoint includes your tenant ID.  Use your tenant ID (not the tenant ID shown here).
  jsonOAuthCC.updateString('token_endpoint', 'https://login.microsoftonline.com/112d7ed6-71bf-4eba-a866-738364321bfc/oauth2/v2.0/token');

  // Provide the OAuth2 information. Chilkat will use this information to automatically fetch the OAuth2 access token as needed,
  http.authToken = jsonOAuthCC.emit();

  // -------------------------------------------------------------------------------------------
  // The following JSON is sent in the request body.

  // {
  //   "startDateTime": "2023-12-14T14:33:30-07:00",
  //   "endDateTime": "2023-12-14T15:03:30-07:00",
  //   "subject": "Patch Meeting Subject"
  // }

  final json = CkJsonObject();
  json.updateString('startDateTime', '2023-12-14T14:33:30-07:00');
  json.updateString('endDateTime', '2023-12-14T15:03:30-07:00');
  json.updateString('subject', 'Patch Meeting Subject');

  final sbRequestBody = CkStringBuilder();
  json.emitSb(sbRequestBody);

  // To update an online meeting, send a PATCH request like this:
  // 
  // PATCH https://graph.microsoft.com/v1.0/users/{userId}/onlineMeetings/{meetingId}
  // Content-Type: application/json 
  // 
  // {
  //   "startDateTime": "2020-09-09T14:33:30.8546353-07:00",
  //   "endDateTime": "2020-09-09T15:03:30.8566356-07:00",
  //   "subject": "Patch Meeting Subject"
  // }

  final userId = '4ee732c3-322e-4a6b-b729-2fd1eb5c6004';
  final meetingId = 'MSo0ZWU3MzJjMy0zMjJlLTRhNmItYjcyOS0yZmQxZWI1YzYwMDQqMCoqMTk6bWVldGluZ19OemMwT0RGa1pESXRNV1ZoTkMwME9UQXpMV0psWXpJdFkyRXdNR0kzTVdNME5qTmpAdGhyZWFkLnYy';

  final sbUrl = CkStringBuilder();
  sbUrl.append('https://graph.microsoft.com/v1.0/users/{userId}/onlineMeetings/{meetingId}');
  var numReplaced = sbUrl.replace('{userId}', userId);
  numReplaced = sbUrl.replace('{meetingId}', meetingId);

  final url = sbUrl.getAsString();

  final resp = CkHttpResponse();
  try {
    http.httpSb('PATCH', url, sbRequestBody, 'utf-8', 'application/json', resp);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // ----------------------------------------------------------------------------------------
  // IMPORTANT: 

  // If using Application access, you will get the following error unless you configure your application
  // to manage online meetings on behalf of the user.  (Note that the user ID is in the URL shown above.)
  // See  https://learn.microsoft.com/en-us/graph/cloud-communication-online-meeting-application-access-policy#allow-applications-to-access-online-meetings-on-behalf-of-a-user 
  // 
  // {
  //   "error": {
  //     "code": "General",
  //     "message": "No application access policy found for this app.",
  //     "innerError": {
  //       "request-id": "1c9bd09a-a089-4afd-add4-eec2334135c8",
  //       "date": "2023-11-17T16:26:53",
  //       "client-request-id": "1c9bd09a-a089-4afd-add4-eec2334135c8"
  //     }
  //   }
  // }
  // ----------------------------------------------------------------------------------------

  final jsonResp = CkJsonObject();
  jsonResp.load(resp.bodyStr);
  jsonResp.emitCompact = false;
  print(jsonResp.emit());

  final statusCode = resp.statusCode;
  print('response status code = $statusCode');

  if (statusCode != 200) {
    print('Failed.');
    return;
  }

  // Here is a sample response:

  // Use the following online tool to generate parsing code from sample JSON: 
  // Generate Parsing Code from JSON

  // {
  //   "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('4ee732c3-322e-4a6b-b729-2fd1eb5c6004')/onlineMeetings/$entity",
  //   "id": "MSo0ZWU3MzJjMy0zMjJlLTRhNmItYjcyOS0yZmQxZWI1YzYwMDQqMCoqMTk6bWVldGluZ19OemMwT0RGa1pESXRNV1ZoTkMwME9UQXpMV0psWXpJdFkyRXdNR0kzTVeNME5qTmpAdGhyZWFkLnYy",
  //   "creationDateTime": "2023-11-17T18:28:15.9746525Z",
  //   "startDateTime": "2023-12-14T21:33:30Z",
  //   "endDateTime": "2023-12-14T22:03:30Z",
  //   "joinUrl": "https://teams.microsoft.com/l/meetup-join/19%3ameeting_Nzd0ODFkZDItMWVhNC00OTAzLWJlYzItY2EwMGI3MWM0NjNj%40thread.v2/0?context=%7b%22Tid%22%3a%22112d7ed6-71bf-4eba-a866-738364321bfc%22%2c%22Oid%22%3a%224ee732c3-322e-4a6b-b729-2fd1eb5c6004%22%7d",
  //   "meetingCode": "215394732897",
  //   "isBroadcast": false,
  //   "autoAdmittedUsers": "everyoneInCompany",
  //   "outerMeetingAutoAdmittedUsers": null,
  //   "capabilities": [
  //   ],
  //   "externalId": null,
  //   "iCalUid": null,
  //   "meetingType": null,
  //   "meetingMigrationMode": null,
  //   "joinWebUrl": "https://teams.microsoft.com/l/meetup-join/19%3ameeting_Nzd0ODFkZDItMWVhNC00OTAzLWJlYzItY2EwMGI3MWM0NjNj%40thread.v2/0?context=%7b%22Tid%22%3a%22112d7ed6-71bf-4eba-a866-738364321bfc%22%2c%22Oid%22%3a%224ee732c3-322e-4a6b-b729-2fd1eb5c6004%22%7d",
  //   "subject": "Patch Meeting Subject",
  //   "videoTeleconferenceId": null,
  //   "isEntryExitAnnounced": true,
  //   "allowedPresenters": "everyone",
  //   "allowAttendeeToEnableMic": true,
  //   "allowAttendeeToEnableCamera": true,
  //   "allowMeetingChat": "enabled",
  //   "shareMeetingChatHistoryDefault": "none",
  //   "allowTeamworkReactions": true,
  //   "anonymizeIdentityForRoles": [
  //   ],
  //   "recordAutomatically": false,
  //   "allowParticipantsToChangeName": false,
  //   "allowTranscription": true,
  //   "allowRecording": true,
  //   "broadcastSettings": null,
  //   "meetingInfo": null,
  //   "audioConferencing": null,
  //   "watermarkProtection": null,
  //   "chatRestrictions": null,
  //   "participants": {
  //     "organizer": {
  //       "upn": "admin@chilkat365.com",
  //       "role": "presenter",
  //       "identity": {
  //         "application": null,
  //         "device": null,
  //         "user": {
  //           "id": "4ee732c3-322e-4a6b-b729-2fd1eb5c6004",
  //           "displayName": null,
  //           "tenantId": "112d7ed6-71bf-4eba-a866-738364321bfc",
  //           "identityProvider": "AAD"
  //         }
  //       }
  //     },
  //     "attendees": [
  //     ]
  //   },
  //   "chatInfo": {
  //     "threadId": "19:meeting_Nzc0ODFkZDItMWVhNC00OTAzLWJlYzItY2EwMGI3MWM0NjNj@thread.v2",
  //     "messageId": "0",
  //     "replyChainMessageId": null
  //   },
  //   "joinInformation": {
  //     "content": "data:text/html,%3cdiv+style ... %2fdiv%3e",
  //     "contentType": "html"
  //   },
  //   "joinMeetingIdSettings": {
  //     "isPasscodeRequired": false,
  //     "joinMeetingId": "215394732897",
  //     "passcode": null
  //   },
  //   "lobbyBypassSettings": {
  //     "scope": "organization",
  //     "isDialInBypassEnabled": false
  //   }
  // }

  // Use the following online tool to generate parsing code from sample JSON: 
  // Generate Parsing Code from JSON

  print('Success.');
}