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VB.NET UWP/WinRT Examples

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(VB.NET UWP/WinRT) Google Cloud Storage List Buckets

Demonstrates how to retrieve a list of buckets for a given project.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads

Chilkat for the Universal Windows Platform (UWP)

' 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 
' scope "https://www.googleapis.com/auth/cloud-platform"

' In this example, Get Google Cloud Storage OAuth2 Access Token, 
' the service account access token was saved to a text file.  This example fetches the access token from the file..
Dim sbToken As New Chilkat.StringBuilder
sbToken.LoadFile("qa_data/tokens/googleCloudStorageAccessToken.txt","utf-8")

Dim http As New Chilkat.Http
http.AuthToken = sbToken.GetAsString()

' For more info see Cloud Storage Documentation - Buckets: list 
' 
Dim success As Boolean = http.SetUrlVar("PROJECT_NAME","ChilkatCloud")
Dim resp As Chilkat.HttpResponse = Await http.QuickGetObjAsync("https://www.googleapis.com/storage/v1/b?project={$PROJECT_NAME}")
If (http.LastMethodSuccess = False) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


Dim responseCode As Integer = resp.StatusCode
If (responseCode = 401) Then
    Debug.WriteLine(resp.BodyStr)
    Debug.WriteLine("If invalid credentials, then it is likely the access token expired.")
    Debug.WriteLine("Your app should automatically fetch a new access token and re-try.")

    Exit Sub
End If


Debug.WriteLine("Response code: " & responseCode)
Debug.WriteLine("Response body")

Dim json As New Chilkat.JsonObject
success = json.Load(resp.BodyStr)


json.EmitCompact = False

Debug.WriteLine(json.Emit())

' A response code = 200 indicates success, and the response body contains JSON such as this:

' {
'   "kind": "storage#buckets",
'   "items": [
'     {
'       "kind": "storage#bucket",
'       "id": "chilkat-bucket",
'       "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-bucket",
'       "projectNumber": "5332332985",
'       "name": "chilkat-bucket",
'       "timeCreated": "2018-10-23T00:04:44.507Z",
'       "updated": "2018-10-23T00:04:44.507Z",
'       "metageneration": "1",
'       "iamConfiguration": {
'         "bucketPolicyOnly": {
'           "enabled": false
'         }
'       },
'       "location": "US",
'       "storageClass": "MULTI_REGIONAL",
'       "etag": "CAE="
'     },
'     {
'       "kind": "storage#bucket",
'       "id": "chilkat-images",
'       "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-images",
'       "projectNumber": "5332332985",
'       "name": "chilkat-images",
'       "timeCreated": "2018-10-23T11:24:43.000Z",
'       "updated": "2018-10-23T11:24:43.000Z",
'       "metageneration": "1",
'       "iamConfiguration": {
'         "bucketPolicyOnly": {
'           "enabled": false
'         }
'       },
'       "location": "US",
'       "storageClass": "MULTI_REGIONAL",
'       "etag": "CAE="
'     }
'   ]
' }

' Use this online tool to generate parsing code from sample JSON: 
' Generate Parsing Code from JSON

Dim kind As String
Dim i As Integer
Dim count_i As Integer
Dim id As String
Dim selfLink As String
Dim projectNumber As String
Dim name As String
Dim timeCreated As String
Dim updated As String
Dim metageneration As String
Dim iamConfigurationBucketPolicyOnlyEnabled As Boolean
Dim location As String
Dim storageClass As String
Dim etag As String

kind = json.StringOf("kind")
i = 0
count_i = json.SizeOfArray("items")
While i < count_i
    json.I = i
    kind = json.StringOf("items[i].kind")
    id = json.StringOf("items[i].id")
    selfLink = json.StringOf("items[i].selfLink")
    projectNumber = json.StringOf("items[i].projectNumber")
    name = json.StringOf("items[i].name")
    timeCreated = json.StringOf("items[i].timeCreated")
    updated = json.StringOf("items[i].updated")
    metageneration = json.StringOf("items[i].metageneration")
    iamConfigurationBucketPolicyOnlyEnabled = json.BoolOf("items[i].iamConfiguration.bucketPolicyOnly.enabled")
    location = json.StringOf("items[i].location")
    storageClass = json.StringOf("items[i].storageClass")
    etag = json.StringOf("items[i].etag")
    i = i + 1
End While

 

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