Upload and download to Google Drive using VB.NET Form [closed] - vb.net

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I am trying to figure out the codes for visual basic .net 2008 of a program (WinForms) that could upload and download some files to and from my google drive account.
Someone can help me?

Answer 1

It took a long time to find some code that worked and I never did find anything written in vb.net. Everything I found was written for C#. Well after doing a bunch of conversion I was able to get some things working. However it was very little and I had to figure out the rest. So to make other people's life so much easier here is working vb.net code for Drive v2 & OAuth 2.0:
Imports System.Threading
Imports System.Threading.Tasks
Imports Google
Imports Google.Apis.Auth.OAuth2
Imports Google.Apis.Drive.v2
Imports Google.Apis.Drive.v2.Data
Imports Google.Apis.Services
Imports Google.Apis.Auth
Imports Google.Apis.Download
'Dev Console:
'https://console.developers.google.com/
'Nuget command:
'Install-Package Google.Apis.Drive.v2
Private Service As DriveService = New DriveService
Private Sub CreateService()
If Not BeGreen Then
Dim ClientId = "your client ID"
Dim ClientSecret = "your client secret"
Dim MyUserCredential As UserCredential = GoogleWebAuthorizationBroker.AuthorizeAsync(New ClientSecrets() With {.ClientId = ClientId, .ClientSecret = ClientSecret}, {DriveService.Scope.Drive}, "user", CancellationToken.None).Result
Service = New DriveService(New BaseClientService.Initializer() With {.HttpClientInitializer = MyUserCredential, .ApplicationName = "Google Drive VB Dot Net"})
End If
End Sub
Private Sub UploadFile(FilePath As String)
Me.Cursor = Cursors.WaitCursor
If Service.ApplicationName <> "Google Drive VB Dot Net" Then CreateService()
Dim TheFile As New File()
TheFile.Title = "My document"
TheFile.Description = "A test document"
TheFile.MimeType = "text/plain"
Dim ByteArray As Byte() = System.IO.File.ReadAllBytes(FilePath)
Dim Stream As New System.IO.MemoryStream(ByteArray)
Dim UploadRequest As FilesResource.InsertMediaUpload = Service.Files.Insert(TheFile, Stream, TheFile.MimeType)
Me.Cursor = Cursors.Default
MsgBox("Upload Finished")
End Sub
Private Sub DownloadFile(url As String, DownloadDir As String)
Me.Cursor = Cursors.WaitCursor
If Service.ApplicationName <> "Google Drive VB Dot Net" Then CreateService()
Dim Downloader = New MediaDownloader(Service)
Downloader.ChunkSize = 256 * 1024 '256 KB
' figure out the right file type base on UploadFileName extension
Dim Filename = DownloadDir & "NewDoc.txt"
Using FileStream = New System.IO.FileStream(Filename, System.IO.FileMode.Create, System.IO.FileAccess.Write)
Dim Progress = Downloader.DownloadAsync(url, FileStream)
Threading.Thread.Sleep(1000)
Do While Progress.Status = TaskStatus.Running
Loop
If Progress.Status = TaskStatus.RanToCompletion Then
MsgBox("Downloaded!")
Else
MsgBox("Not Downloaded :(")
End If
End Using
Me.Cursor = Cursors.Default
End Sub
If you don't know the URL to download the file, then you can use this code to get one:
Dim Request = Service.Files.List()
Request.Q = "mimeType != 'application/vnd.google-apps.folder' and trashed = false"
Request.MaxResults = 2
Dim Results = Request.Execute
For Each Result In Results.Items
MsgBox(Result.DownloadUrl & vbCrLf & Result.Title & vbCrLf & Result.OriginalFilename)
Next

Answer 2

Please look at the .NET samples found on the Google Drive SDK website found below.
Google Drive SDK Documentation
using Google.Apis.Auth.OAuth2;
using Google.Apis.Drive.v3;
using Google.Apis.Drive.v3.Data;
using Google.Apis.Services;
using Google.Apis.Util.Store;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
namespace DriveQuickstart
{
class Program
{
// If modifying these scopes, delete your previously saved credentials
// at ~/.credentials/drive-dotnet-quickstart.json
static string[] Scopes = { DriveService.Scope.DriveReadonly };
static string ApplicationName = "Drive API .NET Quickstart";
static void Main(string[] args)
{
UserCredential credential;
using (var stream =
new FileStream("credentials.json", FileMode.Open, FileAccess.Read))
{
// The file token.json stores the user's access and refresh tokens, and is created
// automatically when the authorization flow completes for the first time.
string credPath = "token.json";
credential = GoogleWebAuthorizationBroker.AuthorizeAsync(
GoogleClientSecrets.Load(stream).Secrets,
Scopes,
"user",
CancellationToken.None,
new FileDataStore(credPath, true)).Result;
Console.WriteLine("Credential file saved to: " + credPath);
}
// Create Drive API service.
var service = new DriveService(new BaseClientService.Initializer()
{
HttpClientInitializer = credential,
ApplicationName = ApplicationName,
});
// Define parameters of request.
FilesResource.ListRequest listRequest = service.Files.List();
listRequest.PageSize = 10;
listRequest.Fields = "nextPageToken, files(id, name)";
// List files.
IList<Google.Apis.Drive.v3.Data.File> files = listRequest.Execute()
.Files;
Console.WriteLine("Files:");
if (files != null && files.Count > 0)
{
foreach (var file in files)
{
Console.WriteLine("{0} ({1})", file.Name, file.Id);
}
}
else
{
Console.WriteLine("No files found.");
}
Console.Read();
}
}
}
Hope this helps you.