(VB.NET) Outlook -- List Mail Folders

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Uses the Microsoft Graph API to list Outlook mail folders.

Note: This example requires Chilkat v9.5.0.67 or greater.

This example applies to: Exchange Online | Office 365 | Hotmail.com | Live.com | MSN.com | Outlook.com | Passport.com

For more information, see https://docs.microsoft.com/en-us/graph/api/user-list-mailfolders?view=graph-rest-1.0&tabs=http

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

Dim http As New Chilkat.Http

' Use your previously obtained access token here:
' See the following examples for getting an access token:
'    Get Microsoft Graph OAuth2 Access Token (Azure AD v2.0 Endpoint).
'    Get Microsoft Graph OAuth2 Access Token (Azure AD Endpoint).
'    Refresh Access Token (Azure AD v2.0 Endpoint).
'    Refresh Access Token (Azure AD Endpoint).

http.AuthToken = "MICROSOFT_GRAPH_ACCESS_TOKEN"

Dim sbResponse As New Chilkat.StringBuilder

' Sends:  GET /users/{id | userPrincipalName}/mailFolders
' Note: It is also possible to use the literal string "me" for the current logged-on user.
' For example: GET /me/mailFolders
http.ClearUrlVars()
http.SetUrlVar("userPrincipalName","chilkatsoft@outlook.com")
Dim success As Boolean = http.QuickGetSb("https://graph.microsoft.com/v1.0/users/{$userPrincipalName}/mailFolders",sbResponse)
If ((success <> True) And (http.LastStatus = 0)) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


Dim json As New Chilkat.JsonObject
json.LoadSb(sbResponse)
json.EmitCompact = False

Debug.WriteLine("Status code = " & http.LastStatus)
If (http.LastStatus <> 200) Then
    Debug.WriteLine(json.Emit())
    Debug.WriteLine("Failed.")
End If


Debug.WriteLine(json.Emit())
Debug.WriteLine("----")

' In my test case, this is the result (see below)
' Apparently, this lists folders without listing subfolders (aka child folders)
' There's another REST API call to list child folders.

' To iterate over the folders:
Dim i As Integer = 0
Dim numFolders As Integer = json.SizeOfArray("value")
While i < numFolders
    json.I = i
    Debug.WriteLine(json.StringOf("value[i].displayName"))
    i = i + 1
End While

' The output from the above loop:

' 	Archive
' 	Deleted Items
' 	Drafts
' 	Inbox
' 	Junk Email
' 	Outbox
' 	Sent Items

' ------------------------------------------------------------------------------------
' The raw JSON response: 

' {
'   "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('chilkatsoft%40outlook.com')/mailFolders",
'   "value": [
'     {
'       "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAG8XunwAAAA=",
'       "displayName": "Archive",
'       "parentFolderId": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAgEIAAAA",
'       "childFolderCount": 0,
'       "unreadItemCount": 0,
'       "totalItemCount": 0
'     },
'     {
'       "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAgEKAAAA",
'       "displayName": "Deleted Items",
'       "parentFolderId": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAgEIAAAA",
'       "childFolderCount": 0,
'       "unreadItemCount": 0,
'       "totalItemCount": 0
'     },
'     {
'       "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAgEPAAAA",
'       "displayName": "Drafts",
'       "parentFolderId": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAgEIAAAA",
'       "childFolderCount": 0,
'       "unreadItemCount": 0,
'       "totalItemCount": 0
'     },
'     {
'       "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA",
'       "displayName": "Inbox",
'       "parentFolderId": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAgEIAAAA",
'       "childFolderCount": 2,
'       "unreadItemCount": 0,
'       "totalItemCount": 4
'     },
'     {
'       "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAgEiAAAA",
'       "displayName": "Junk Email",
'       "parentFolderId": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAgEIAAAA",
'       "childFolderCount": 0,
'       "unreadItemCount": 0,
'       "totalItemCount": 0
'     },
'     {
'       "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAgELAAAA",
'       "displayName": "Outbox",
'       "parentFolderId": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAgEIAAAA",
'       "childFolderCount": 0,
'       "unreadItemCount": 0,
'       "totalItemCount": 0
'     },
'     {
'       "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAgEJAAAA",
'       "displayName": "Sent Items",
'       "parentFolderId": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAgEIAAAA",
'       "childFolderCount": 0,
'       "unreadItemCount": 0,
'       "totalItemCount": 14
'     }
'   ]
' }
' 


' ------------------------------------------------------------------------------------------------------
' This example applies to: Exchange Online | Office 365 | Hotmail.com | Live.com | MSN.com | Outlook.com | Passport.com
' 
' The Microsoft Graph Outlook Mail API lets you read, create, and send messages and attachments, 
' view and respond to event messages, and manage folders that are secured by Azure Active Directory 
' in Office 365. It also provides the same functionality in Microsoft accounts specifically 
' in these domains: Hotmail.com, Live.com, MSN.com, Outlook.com, and Passport.com.