(VB.NET) MS Teamwork: Update an Online Meeting

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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.

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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>

Note: This example uses the new "Integrated OAuth2 Client Credentials" feature introduced in Chilkat v9.5.0.96.

For more information, see https://learn.microsoft.com/en-us/graph/api/onlinemeeting-update?view=graph-rest-1.0&tabs=http

Chilkat .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

' This requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

Dim success As Boolean
Dim http As New Chilkat.Http

' Provide the information needed for Chilkat to automatically fetch the OAuth2.0 
' access token as needed.
' This is the new "Integrated OAuth2 Client Credentials" feature introduced in Chilkat v9.5.0.96.  
Dim jsonOAuthCC As New Chilkat.JsonObject

' --------------------------------------------------------------------------------------------------------
' 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"
' }

Dim json As New Chilkat.JsonObject
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")

Dim sbRequestBody As New Chilkat.StringBuilder
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"
' }

Dim userId As String = "4ee732c3-322e-4a6b-b729-2fd1eb5c6004"
Dim meetingId As String = "MSo0ZWU3MzJjMy0zMjJlLTRhNmItYjcyOS0yZmQxZWI1YzYwMDQqMCoqMTk6bWVldGluZ19OemMwT0RGa1pESXRNV1ZoTkMwME9UQXpMV0psWXpJdFkyRXdNR0kzTVdNME5qTmpAdGhyZWFkLnYy"

Dim sbUrl As New Chilkat.StringBuilder
sbUrl.Append("https://graph.microsoft.com/v1.0/users/{userId}/onlineMeetings/{meetingId}")
Dim numReplaced As Integer = sbUrl.Replace("{userId}",userId)
numReplaced = sbUrl.Replace("{meetingId}",meetingId)

Dim resp As Chilkat.HttpResponse = http.PTextSb("PATCH",sbUrl.GetAsString(),sbRequestBody,"utf-8","application/json",False,False)
If (http.LastMethodSuccess = False) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


' ----------------------------------------------------------------------------------------
' 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"
'     }
'   }
' }
' ----------------------------------------------------------------------------------------

Dim jsonResp As New Chilkat.JsonObject
jsonResp.Load(resp.BodyStr)
jsonResp.EmitCompact = False
Debug.WriteLine(jsonResp.Emit())

Dim statusCode As Integer = resp.StatusCode
Debug.WriteLine("response status code = " & statusCode)



If (statusCode <> 200) Then
    Debug.WriteLine("Failed.")
    Exit Sub
End If


' Here is a sample response:

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



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

Debug.WriteLine("Success.")