/// <summary> /// Convert a slide as image /// </summary> /// <param name="slide">The slide to be converted</param> /// <returns></returns> private async Task <String> ConvertSlide(ISlide slide) { string mainImageFileName; string thumbImageFileName; if (_presentation.Slides[0].SlideNumber > 0) { mainImageFileName = "Slide " + slide.SlideNumber.ToString() + ".jpg"; thumbImageFileName = "ThumbSlide " + slide.SlideNumber.ToString() + ".jpg"; } else { mainImageFileName = "Slide " + (slide.SlideNumber + 1) + ".jpg"; thumbImageFileName = "ThumbSlide " + (slide.SlideNumber + 1) + ".jpg"; } StorageFile mainImageStorageFile = await _localFolder.CreateFileAsync(mainImageFileName, CreationCollisionOption.ReplaceExisting); StorageFile thumbImageStorageFile = await _localFolder.CreateFileAsync(thumbImageFileName, CreationCollisionOption.ReplaceExisting); RenderingOptions options = new RenderingOptions() { ScaleX = 0.25f, ScaleY = 0.25f }; await slide.SaveAsImageAsync(mainImageStorageFile, _cancellationToken.Token); await slide.SaveAsImageAsync(thumbImageStorageFile, options, _cancellationToken.Token); if (LoadingStatusCanvas != null && slide.SlideNumber == _slideCount) { LoadingStatusCanvas.Visibility = Visibility.Collapsed; } _convertedSlides = slide.SlideNumber; return(mainImageStorageFile.Path); }