How to create progress bar for uploading file via Google Drive API

Question

I am sending file to Google Drive by their API. The request.Upload(); is lingering with no return. How do I make progress? It can be with a for even without a graphical user interface.

Shipping method:

 public static File UploadFile(DriveService _service, string _uploadFile, string _parent)
    {
        if (System.IO.File.Exists(_uploadFile))
        {
            File body = new File();
            body.Title = System.IO.Path.GetFileName(_uploadFile);
            body.Description = "Teste";
            body.MimeType = GetMimeType(_uploadFile);
            body.Parents = new List<ParentReference>() { new ParentReference() { Id = _parent } };

            // monta os bytes
            byte[] byteArray = System.IO.File.ReadAllBytes(_uploadFile);
            System.IO.MemoryStream stream = new System.IO.MemoryStream(byteArray);
            try
            {
                FilesResource.InsertMediaUpload request = _service.Files.Insert(body, stream, body.MimeType);
                request.Upload();
                return request.ResponseBody;
            }
            catch (Exception e)
            {
                Console.WriteLine("An error occurred: " + e.Message);
                return null;
            }
        }
        else
        {
            Console.WriteLine("File does not exist: " + _uploadFile);
            return null;
        }

    }

Answer 1

You will have to use the event ProgressChanged:

 FilesResource.InsertMediaUpload request = _service.Files.Insert(body, stream, body.MimeType);
 request.ProgressChanged += Upload_ProgressChanged;
 ....

 private static void Upload_ProgressChanged(Google.Apis.Upload.IUploadProgress progress)
 {            
     // calcule aqui a porcentagem a partir do total de bytes do seu arquivo 
     Console.WriteLine("Bytes enviados: " + progress.BytesSent);
 }

Using this event, just make an account with the total bytes of your file and the property BytesSent of the object received in the event parameter. Hence it is easy to use any progress control or even text with the percentage.

However, you will have to upload it asynchronously. Change the line:

request.Upload();

To

request.UploadAsync();

Reference: https://developers.google.com/api-client-library/dotnet/guide/media_upload

Answer 2

From what I read in the documentation, InsertMediaUpload drift ResumableUpload<TRequest>.

The percentage can be obtained by the method GetProgress. Also as in @Marcusvinicius' reply, it is possible to write a callback to send this to a screen or somewhere else. In his example, it is sent to Console.