(VB.NET) List Files in Google Drive

Demonstrates how to list files in Google Drive.

See Google Drive Files list for more optional HTTP parameters.

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

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 = rest.Connect("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 = rest.FullRequestNoBody("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