public void StreamtoFile(Google.Apis.Drive.v3.Data.File x) { FilesResource bung = new FilesResource(driver); MemoryStream output = new MemoryStream(); var stream = new System.IO.MemoryStream(); bung.Get(x.Id).Download(stream); DependencyService.Get <ISave>().Save(x.Name, "application/vnd.ms-excel", stream); Application.Current.Properties["Boff"] += "\nDownloaded: " + x.Name; }