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export/extract image bytes of each page

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Mark
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Mark asked on 06 Sep 2012, 02:47 AM
Hi all,

Im trying to discover the features of the RadPDFViewer control and I really want to either save each page to a JPG/PNG/etc file or perhaps just 'get' the bytes/memory stream of each page that I can use in various places in my WPF app.

I saw the filters API, but I cannot find examples or code samples on this API, can what I desire be achieved?

Thanks a lot
Mark

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Mark
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answered on 10 Sep 2012, 12:46 AM
Anyone have any help or ideas on this? I really need a resolution to this issue ASAP.

Thanks for any help you can give.
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Kammen
Telerik team
answered on 10 Sep 2012, 11:16 AM
Hi Mark,

RadPdfViewer is normally used to display PDF documents in business applications. It is not the best way to export a PDF page to image. However, you can use the FixedDocumentSinglePagePresenter in your case. Here is a sample code of how you can create an image from a PDF page.

Stream stm = Application.GetResourceStream(new Uri("pack://application:,,,/Sample.pdf", UriKind.RelativeOrAbsolute)).Stream;
PdfFormatProvider provider = new PdfFormatProvider(stm, FormatProviderSettings.ReadOnDemand);
RadFixedDocument document = provider.Import();
FixedDocumentSinglePagePresenter container = new FixedDocumentSinglePagePresenter();
RadFixedPage page = document.Pages[0];
container.ContentCreated += (s, ea) =>
{
    RadBitmap rbm = new RadBitmap((int)page.ActualWidth, (int)page.ActualHeight, container);
    Window w = new Window();
    Image img = new Image();
    img.Source = rbm.Bitmap;
    w.Content = img;
    w.Show();
};
container.Page = page;


Regards,
Kammen
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Mark
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answered on 10 Sep 2012, 12:24 PM
Hi Kammen,

Thanks a lot for the reply, when you say that its not the best way, do you have any guidance on the best way to get the pages from a PDF into JPG or Image controls? Does Telerik have any libraries for this?
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Kammen
Telerik team
answered on 11 Sep 2012, 08:20 AM
Hi Mark,

We do not have such a library. However, we have found an open-source solution for converting PDF to PNG and JPG. You can find it here. It represents a C# wrapper for the Ghostscript library. We have tested it and it seems to work fine.

You should choose for yourself which way best suits your needs.


Regards,
Kammen
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Mark
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answered on 12 Sep 2012, 04:51 AM
Hi Kammen, thanks for this, you may close this issue.
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