IwarningCallback usage in pdf conversion

Aspose.PDF Product Family
1

Hi Team,

Currently i am converting a PDF document to single page tiff images by using the below mentioned code.



public static System.Drawing.Image[] ConvertPDFtoMultiPageTiff(string OutputFolder, string FullInputFileName)

{

System.Drawing.Image[] sourceImages = null;

        <span style="color:blue;">try</span>
        {

            <span style="color:#2b91af;">Document</span> pdfDocument = <span style="color:blue;">new</span> <span style="color:#2b91af;">Document</span>(FullInputFileName);
           
            <span style="color:green;">//create Resolution object</span>
            <span style="color:#2b91af;">Resolution</span> resolution = <span style="color:blue;">new</span> <span style="color:#2b91af;">Resolution</span>(300);
            <span style="color:green;">//create TiffSettings object</span>
            <span style="color:#2b91af;">TiffSettings</span> tiffSettings = <span style="color:blue;">new</span> <span style="color:#2b91af;">TiffSettings</span>();
            tiffSettings.Compression = <span style="color:#2b91af;">CompressionType</span>.CCITT4;
    
            
            <span style="color:blue;">if</span>(tiffSettings.Shape == <span style="color:#2b91af;">ShapeType</span>.Landscape)
            tiffSettings.Shape = <span style="color:#2b91af;">ShapeType</span>.Portait;
           
            tiffSettings.SkipBlankPages = <span style="color:blue;">false</span>;
            tiffSettings.Brightness = .40f;
     

            <span style="color:#2b91af;">Stream</span> output = <span style="color:blue;">null</span>;
            sourceImages = <span style="color:blue;">new</span> System.Drawing.<span style="color:#2b91af;">Image</span>[pdfDocument.Pages.Count];
            <span style="color:green;">//create TIFF device</span>
            <span style="color:#2b91af;">TiffDevice</span> tiffDevice = <span style="color:blue;">new</span> <span style="color:#2b91af;">TiffDevice</span>(resolution, tiffSettings);
           
            
            <span style="color:blue;">for</span> (<span style="color:blue;">int</span> page = 1; page <= pdfDocument.Pages.Count; page++)
            {

                output = <span style="color:blue;">new</span> <span style="color:#2b91af;">MemoryStream</span>();

                tiffDevice.Process(pdfDocument, page, page, output);
                sourceImages[page - 1] = System.Drawing.<span style="color:#2b91af;">Image</span>.FromStream(output);
                <span style="color:green;">//sourceImages[page - 1].Save(Path.Combine(OutputFolder, String.Concat(Path.GetFileNameWithoutExtension(FullInputFileName), ".", page.ToString().PadLeft(3, '0'))));</span>
                sourceImages[page - 1].Save(<span style="color:#2b91af;">Path</span>.Combine(OutputFolder, <span style="color:#2b91af;">String</span>.Concat(<span style="color:#2b91af;">Path</span>.GetFileNameWithoutExtension(FullInputFileName), page.ToString().PadLeft(3, <span style="color:#a31515;">'0'</span>), <span style="color:#a31515;">"."</span>, <span style="color:#a31515;">"tiff"</span>)));
                output = <span style="color:blue;">null</span>;

            }

        }
        <span style="color:blue;">catch</span> (<span style="color:#2b91af;">Exception</span> ex)
        {
            sourceImages = <span style="color:blue;">null</span>;
            <span style="color:blue;">throw</span> <span style="color:blue;">new</span> <span style="color:#2b91af;">Exception</span>(<span style="color:#2b91af;">String</span>.Format(<span style="color:#a31515;">"Error in splitTiffPages: {0}"</span>, ex.Message));
        }


        <span style="color:blue;">return</span> sourceImages;
    }<br><br><br>I read in the aspose site that by using IwarningCallback methode we can 



get the warning if there is a problem in the document. Can you please

help me how can i achieve this functionality in the above code?

Regards
Anish


2

Hi Anish,


Thanks for your inquiry. We are looking into it and will update you soon.

Best Regards,
3

Hi Anish,


Thanks for your patience. I’m afraid currently the subjected feature is not supported for PDF to Image conversions. However, I’ve logged an feature enhancement request as PDFNEWNET-35391 in our issue tracking system. We will notify you via this forum thread as soon as it gets available.

Sorry for the inconvenience faced.

Best Regards,