.NET SDK で PNG を PDF に変換

    public static void ConvertPngToPdf()
    {
        const string localImageFileName = @"C:\Samples\Conversion\sample.png";
        const string storageImageFileName = "sample.png";
        const string resultFileName = "sample-png-to-pdf.pdf";
        
        // Get your AppSid and AppSecret https://dashboard.aspose.cloud (free registration required).
        var pdfApi = new PdfApi(AppSecret, AppSid);
        using var file = File.OpenRead(localImageFileName);
        pdfApi.UploadFile(storageImageFileName, file);

        var imageTemplatesRequest = new ImageTemplatesRequest(IsOCR: false,
            ImagesList: [new ImageTemplate(ImagePath: storageImageFileName, ImageSrcType: ImageSrcType.Common)]
        );
        
        var response = pdfApi.PutImageInStorageToPdf(resultFileName, imageTemplatesRequest);
        Console.WriteLine($"PNG to PDF result: {response.Status}");
        pdfApi.DownloadFile(resultFileName)
            .CopyTo(File.Create(resultFileName));
    }