问题描述
我要阅读PDF文档的XMP元数据。我试图读取PDFsharp数据（）。多数时候效果很好，但在某些情况下，我得到这个异常：
I want to read the XMP metadata from PDF documents. I tried to read the data with PDFsharp (http://www.pdfsharp.net/). Most of time it worked well, but in some cases I get this exception:
Unhandled Exception: PdfSharp.Pdf.IO.PdfReaderException: Cannot handle iref streams. The current implementation of PDFsharp cannot handle this PDF feature introduced with Acrobat 6.
介绍了PDF功能
我读的地方，这样做在新版本中不会发生。所以，我下载PdfSharp 1.50.3638-β（）。
是的，现在我也不例外。但我的新问题是，函数PdfReader.open不会对一些文档。这意味着程序永远不会离开功能。
And yes, now I have no exception. But my new problem is that the function PdfReader.open does not work on some documents. This means that the program never leaves the function.
在一些论坛上我已阅读，它可以通过与许多图像大型文档所致。于是，我试图读取该文件的唯一信息：
In some forums I have read that it could be caused by large documents with many images. So I tried to read only the information of the document:
PdfDocument pd = PdfReader.Open(s, PdfDocumentOpenMode.InformationOnly);
但它仍然无法正常工作。有些想法如何，我可以读取元数据？
But it still doesn't work. Some ideas how I can read the metadata?
推荐答案
有关IREF支持流是新换PDFsharp 1.50 测试版如果您有无法读取，然后一个文件，请提交审核。
Support for IRef streams is new for PDFsharp 1.50 beta and if you have a file that cannot be read then please submit it for examination.
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