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Convert xps document to a .NET bitmap

License: GNU Lesser General Public License v3.0

PowerShell 75.62% C# 24.38%

xps2img's Introduction

xps2img

Convert xps documents to a .NET bitmap. Supports both single and multi-paged xps documents.

This code is mostly derived from xps2img@sourceforge by Ivan Ivon.

Installing via Nuget

Install-Package xps2img

Supported frameworks

.NET Framework 4.0
.NET Framework 4.5
.NET Framework 4.5.1
.NET Framework 4.6

Usage

Additional examples

Convert a xps document to png from disk

using (var xpsConverter = new Xps2Image("multipage.xps"))
{
	var images = xpsConverter.ToBitmap(new Parameters
	{
		ImageType = ImageType.Png,
		Dpi = 300
	});
}

Convert a xps document to png from a byte array

using (var xpsConverter = new Xps2Image(File.ReadAllBytes("multipage.xps")))
{
	var images = xpsConverter.ToBitmap(new Parameters
	{
		ImageType = ImageType.Png,
		Dpi = 300
	});
}

Convert a xps document to png from stream

using (var xpsConverter = new Xps2Image(new MemoryStream(File.ReadAllBytes("multipage.xps"))))
{
	var images = xpsConverter.ToBitmap(new Parameters
	{
		ImageType = ImageType.Png,
		Dpi = 300
	});
}

License

GNU LESSER GENERAL PUBLIC LICENSE Version 3

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xps2img's Issues

Remove OutOfMemoryException retries for RenderPageToBitmap.

https://github.com/peters/xps2img/blob/master/src/xps2img/Xps2Image.cs

private RenderTargetBitmap RenderPageToBitmap(DocumentPage page, RenderTargetBitmap bitmap)

For a library it makes no sense to keep trying on OutOfMemoryException (makes sense for separate console app, see also UI code at http://xps2img.sf.net.)

I'd suggest to reduce method as follows or even inline it.

bitmap.Render(page.Visual);

                // Memory leak fix.
                // http://social.msdn.microsoft.com/Forums/en/wpf/thread/c6511918-17f6-42be-ac4c-459eeac676fd
                ((FixedPage)page.Visual).UpdateLayout();

                _conversionStarted = true;

                return bitmap;

Remove dpendencies.

https://github.com/peters/xps2img/blob/master/src/xps2img/ImageDefs.cs

Could you please remove Description attibutes from enum TiffCompressOption? There are for UI only.

Please also remove using System.ComponentModel; and reference to it.

Thank you.

Cannot save images to Jpeg format

Every time I try to save a image in a jpeg format, I receive a "A generic error occurred in GDI+" Exception. The path of the output file is correct and the application has full permission on the folder where the file should be saved. Below the code that I used. The same code works great if I convert it to png:

public static bool XpsToImage(string inputFile, int page, int dpi)
{
  var pages = new List<Bitmap>();
  using (var xpsConverter = new Xps2Image(new MemoryStream(File.ReadAllBytes(inputFile))))
  {
    var image = xpsConverter.ToBitmap(new Parameters
    {
      Dpi = dpi,
      ImageType = ImageType.Jpeg,
   });

   if (image == null)
     return false;

   pages.AddRange(image);
 }

var outputfile = Path.GetDirectoryName(inputFile) + Path.DirectorySeparatorChar +
                        Path.GetFileNameWithoutExtension(inputFile) + "_preview.Jpeg";
try
{
   if (page < pages.Count)
     pages[page].Save(outputfile, ImageFormat.Jpeg);
}
catch (Exception ex)
{
  LOGGER.Error("Cannot save image", ex);
  return false;
}

return true;
}

Stopped working on Azure?

As title say I think this has stopped working in Azure Web Apps since somewhere around 2017-11-10?

Can anyone confirm? It did work before now I just get a transparent/blank image with png.

Update howto use

might want to include these lines so it's easier for someone to save each image

            var pages = new List<System.Drawing.Bitmap>();
            pages.AddRange(images);

XPS to PDF

Hello Peter,

Very nice library. Wonderful work though

Do you have library to convert XPS to PDF ?