private async Task CopyLink(File file)
        {
            this.IsLoading = true;
            try
            {
                var link = await this.client.GetPublicFileLinkAsync(file.FileId, null);
                var dataPackage = new DataPackage();
                dataPackage.SetText(link);
                dataPackage.SetWebLink(new Uri(link));
                Clipboard.SetContent(dataPackage);

                var notificationService = SimpleIoc.Default.GetInstance<NotificationService>();
                notificationService.ShowToast("File(s) shared", "A link has been copied to the clipboard", "Assets/Logo.scale-100.png");
            }
            finally
            {
                this.IsLoading = false;
            }
        }
        private Windows.UI.ViewManagement.ViewSizePreference GetPreferredViewSizeForFile(File file)
        {
            if (file.Category == Category.Audio)
            {
                return Windows.UI.ViewManagement.ViewSizePreference.UseMore;
            }

            return Windows.UI.ViewManagement.ViewSizePreference.UseLess;
        }
        private async Task OpenFile(File file, bool displayApplicationPicker = false)
        {
            StorageFile tempFile = null;
            using (var cts = new CancellationTokenSource())
            using (this.ShowProgress(string.Format("Opening {0}", file.Name), cts))
            {
                tempFile = await ApplicationData.Current.TemporaryFolder.CreateFileAsync(file.Name, CreationCollisionOption.GenerateUniqueName);
                using (var stream = await System.IO.WindowsRuntimeStorageExtensions.OpenStreamForWriteAsync(tempFile))
                {
                    if (cts.IsCancellationRequested)
                    {
                        return;
                    }

                    await client.DownloadFileAsync(file.FileId, stream, cts.Token);
                }
            }

            var options = new LauncherOptions
            {
#if WINDOWS_APP
				DesiredRemainingView = this.GetPreferredViewSizeForFile(file),
#endif
                DisplayApplicationPicker = displayApplicationPicker
            };
            await Launcher.LaunchFileAsync(tempFile, options);
        }