How to download files from Google drive in background task

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I am working on this Windows 8.1 store app.

I am trying to download a file from google drive using the google-drive-api v3 in background without it being interrupted if I navigate to some other page.

Below is what I am doing to download a file but I am not sure what I need to do to make the same work in background.

Can someone please help me how I can do this same in background task.

Thanks,

What I have tried:

C#

public  async Task DownloadFile(DriveService service, File file)
        {
            var request = service.Files.Get(file.Id);
            var stream = new MemoryStream();
            if (file.MimeType != "application/vnd.google-apps.folder")
            {
                request.MediaDownloader.ProgressChanged += (IDownloadProgress progress) =>
                {
                    switch (progress.Status)
                    {
                        case DownloadStatus.Downloading:
                            {
                                Debug.WriteLine(progress.BytesDownloaded);
                                break;
                            }
                        case DownloadStatus.Completed:
                            {
                                Debug.WriteLine("Download complete.");
                                break;
                            }
                        case DownloadStatus.Failed:
                            {
                                Debug.WriteLine("Download failed.");
                                break;
                            }
                    }
                };
                request.Download(stream);
                await SaveToLocalFolderAsync(stream, file.Name);
            }
        }

Posted 23-Dec-16 7:16am

deepaksharma0390

Updated 23-Dec-16 7:24am

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Afzaal Ahmad Zeeshan · Accepted Answer · 2016-12-23T07:24:00

You already have an async function, just add a Task.Run[^] function in the body to run the task in the background, that will just require to wrap the function code in there, and execute it.

C#

public void func() {
   Task.Run(async () => {
      // awaitable code here.
   });
}

You might need to change the inner function to async too, just read the link provided above, it has examples for your need.

I recommend that you try to read this, Asynchronous Programming with async and await (C#)[^].