Visual Basic 6.0

Upload Application Specific Data

See more Google Drive Examples

Uploads a text file (application specific data) where the contents of the file are contained in a string variable. Visual Basic 6.0

Dim success As Long
success = 0

success = 1

' 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 application specific data scope.
Dim jsonToken As New ChilkatJsonObject
success = jsonToken.LoadFile("qa_data/tokens/googleDriveAppData.json")

Dim gAuth As New ChilkatAuthGoogle
gAuth.AccessToken = jsonToken.StringOf("access_token")

Dim rest As New ChilkatRest

' Connect using TLS.
Dim bAutoReconnect As Long
bAutoReconnect = 1
success = rest.Connect("www.googleapis.com",443,1,bAutoReconnect)

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

' A multipart upload to Google Drive needs a multipart/related Content-Type
success = rest.AddHeader("Content-Type","multipart/related")

' Specify each part of the request.

' The 1st part is JSON with information about the file.
rest.PartSelector = "1"
success = rest.AddHeader("Content-Type","application/json; charset=UTF-8")

Dim json As New ChilkatJsonObject
json.EmitCompact = 0

success = json.UpdateString("name","helloWorld.txt")
success = json.UpdateString("description","A simple text file that says Hello World.")
success = json.UpdateString("mimeType","text/plain")
' Specifiy the application-specific data folder.
success = json.UpdateString("parents[0]","appDataFolder")
success = rest.SetMultipartBodyString(json.Emit())

Debug.Print json.Emit()

' The JSON looks like this:
' {
'   "name": "helloWorld.txt",
'   "description": "A simple text file that says Hello World.",
'   "mimeType": "text/plain",
'   "parents": [
'     "appDataFolder"
'   ]
' }

' The 2nd part is the file content.
' In this case, we'll upload a simple text file containing "Hello World!"
rest.PartSelector = "2"
success = rest.AddHeader("Content-Type","text/plain")

Dim fileContents As String
fileContents = "Hello World!"
success = rest.SetMultipartBodyString(fileContents)

Dim jsonResponse As String
jsonResponse = rest.FullRequestMultipart("POST","/upload/drive/v3/files?uploadType=multipart")
If (rest.LastMethodSuccess <> 1) Then
    Debug.Print rest.LastErrorText
    Exit Sub
End If

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

' Show the JSON response.
success = json.Load(jsonResponse)

' Show the full JSON response.
json.EmitCompact = 0
Debug.Print json.Emit()

' A successful response looks like this:
' {
'   "kind": "drive#file",
'   "id": "0B53Q6OSTWYoldmJ0Z3ZqT2x5MFk",
'   "name": "Untitled",
'   "mimeType": "text/plain"
' }

' Get the fileId:
Debug.Print "fileId: " & json.StringOf("id")