(VB.NET UWP/WinRT) List Files in Google Drive

Demonstrates how to list files in Google Drive.

See Google Drive Files list for more optional HTTP parameters.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads Chilkat for the Universal Windows Platform (UWP)

Dim success As Boolean = True

' It 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 4 results per page.  (The default page size is 100, with a max of 1000.
rest.AddQueryParam("pageSize","4")

' This uses the Google Drive V3 API... (not V2)
Dim jsonResponse As String = Await rest.FullRequestNoBodyAsync("GET","/drive/v3/files")
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("request header = " & rest.LastRequestHeader)
    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


' A successful response looks like this:
' {
'  "kind": "drive#fileList",
'  "files": [
'    {
'      "kind": "drive#file",
'      "id": "0B53Q6OSTWYolenpjTEU4ekJlQUU",
'      "name": "test",
'      "mimeType": "application/vnd.google-apps.folder"
'    },
'    {
'      "kind": "drive#file",
'      "id": "0B53Q6OSTWYolRm4ycjZtdXhRaEE",
'      "name": "starfish4.jpg",
'      "mimeType": "image/jpeg"
'    },
'    {
'      "kind": "drive#file",
'      "id": "0B53Q6OSTWYolMWt2VzN0Qlo1UjA",
'      "name": "hamlet2.xml",
'      "mimeType": "text/xml"
'    },
' ...
'    {
'      "kind": "drive#file",
'      "id": "0B53Q6OSTWYolc3RhcnRlcl9maWxlX2Rhc2hlclYw",
'      "name": "Getting started",
'      "mimeType": "application/pdf"
'    }
'  ]
' }

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

' Show the full JSON response.
json.EmitCompact = False
Debug.WriteLine(json.Emit())

Dim numFiles As Integer = json.SizeOfArray("files")
Dim i As Integer = 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