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VB.NET UWP/WinRT Examples

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(VB.NET UWP/WinRT) List all Folders

Demonstrates how to retrieve a list of all folders.

Note: Let's say we have a directory tree with the following folders in Google Drive:

/AAWorkArea
/AAWorkArea/FolderA
/AAWorkArea/FolderB
/Folder2
/Folder2/FolderA

This would be our result. Notice that the "name" of each folder is NOT the full path, but just the final folder name. To distinguish between the two FolderA's, we would need to get the parent information for each.

---- Page 1 ----
name: FolderB
id: 1ep8p9wsCV8S_xTI7G1-qEuf8RNO_9250
mimeType: application/vnd.google-apps.folder
-
name: FolderA
id: 1h_BWJGEn7L7aFV5SN8iOKv91uxddTbY8
mimeType: application/vnd.google-apps.folder
-
name: Folder2
id: 1cvDIF78KSDuUyrU_VCKRSRbmENWkHNqV
mimeType: application/vnd.google-apps.folder
-
name: AAWorkArea
id: 0BzXkF-yZEO0-ank3VndfZTZsdlk
mimeType: application/vnd.google-apps.folder
-
name: FolderA
id: 1Fksv-TfA1ILii1YjXsNa1-rDu8Cdrg72
mimeType: application/vnd.google-apps.folder
-

Chilkat Universal Windows Platform (UWP) / WinRT Downloads

Chilkat for the Universal Windows Platform (UWP)

Dim success As Boolean = True

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

'  This example uses a previously obtained access token having permission for the
'  Google Drive scope.

Dim gAuth As New Chilkat.AuthGoogle
gAuth.AccessToken = "GOOGLE-DRIVE-ACCESS-TOKEN"

Dim rest As New Chilkat.Rest

'  Connect using TLS.
Dim bAutoReconnect As Boolean = True
success = Await rest.ConnectAsync("www.googleapis.com",443,True,bAutoReconnect)

'  Provide the authentication credentials (i.e. the access token)
rest.SetAuthGoogle(gAuth)

'  Get 50 results per page for testing.  (The default page size is 100, with a max of 1000.
rest.AddQueryParam("pageSize","50")

'  Get all entries that are folders.
rest.AddQueryParam("q","mimeType = 'application/vnd.google-apps.folder'")

Dim json As New Chilkat.JsonObject
json.EmitCompact = False

Dim i As Integer
Dim numFiles As Integer

'  Send the request for the 1st page.
Dim jsonResponse As String = Await rest.FullRequestNoBodyAsync("GET","/drive/v3/files")

Dim pageNumber As Integer = 1
Dim pageToken As String
Dim bContinueLoop As Boolean = rest.LastMethodSuccess And (rest.ResponseStatusCode = 200)

While bContinueLoop = True

    Debug.WriteLine("---- Page " & pageNumber & " ----")

    '  Iterate over each file in the response and show the name, id, and mimeType.
    json.Load(jsonResponse)

    numFiles = json.SizeOfArray("files")
    i = 0
    While i < numFiles
        json.I = i
        Debug.WriteLine("name: " & json.StringOf("files[i].name"))
        Debug.WriteLine("id: " & json.StringOf("files[i].id"))
        Debug.WriteLine("mimeType: " & json.StringOf("files[i].mimeType"))
        Debug.WriteLine("-")
        i = i + 1
    End While

    '  Get the next page of files.
    '  If the "nextPageToken" is present in the JSON response, then use it in the "pageToken" parameter
    '  for the next request.   If no "nextPageToken" was present, then this was the last page of files.
    pageToken = json.StringOf("nextPageToken")
    bContinueLoop = False
    Dim bHasMorePages As Boolean = json.LastMethodSuccess
    If (bHasMorePages = True) Then
        rest.ClearAllQueryParams()
        rest.AddQueryParam("pageSize","50")
        rest.AddQueryParam("pageToken",pageToken)
        rest.AddQueryParam("q","mimeType = 'application/vnd.google-apps.folder'")

        jsonResponse = Await rest.FullRequestNoBodyAsync("GET","/drive/v3/files")
        bContinueLoop = rest.LastMethodSuccess And (rest.ResponseStatusCode = 200)
        pageNumber = pageNumber + 1
    End If


End While

If (rest.LastMethodSuccess <> True) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If


'  A successful response will have a status code equal to 200.
If (rest.ResponseStatusCode <> 200) Then
    Debug.WriteLine("response status code = " & rest.ResponseStatusCode)
    Debug.WriteLine("response status text = " & rest.ResponseStatusText)
    Debug.WriteLine("response header: " & rest.ResponseHeader)
    Debug.WriteLine("response JSON: " & jsonResponse)
    Exit Sub
End If


 

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