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Acrobat 6 or higher implements a new and more efficient way to compress PDF files: Object Streams. This leads to slightly smaller PDF files than the traditional compression method, which zips large data streams only. PDFsharp 1.50 beta is able to read many files that contain IRefStreams. Some files still throw exceptions, but we are working on it. [...]
[...] to an existing PDF file). PDF documents are based internally on objects like dictionaries, arrays, streams etc. This sample shows how to work directly on these underlying PDF objects. Use this functionality to achieve PDF features that are not yet implemented in PDFsharp. PDF Output File
See the PDF file created by this sample: output.pdf (90 kB)
Note: the OpenAction causes Adobe Reader to initially display page 3 of the document. Source Code
Here is the code that shows how to add an OpenAction:
// Read document into memory for modification
PdfDocument document [...]
[...] access images. So what can you do if you want to use images from application resources, databases, or streams? With PDFsharp 1.50 beta 2, a new feature was added: MigraDoc now accepts filenames that contain BASE64-encoded images with the prefix "base64:". In this case, the filename does not refer to a file, the filename contains all the bits of the bitmap in an ASCII string with the BASE64 encoding. So the filename can be very long, depending on the size of the file. A byte array (byte[] in C#) can easily be converted to a filename.
If you have a stream, you can easily [...]
[...] following road map is not a commitment. PDFsharp
Fixed or improved with version 1.50 Support of iref streams [...]
[...] sample. Graphics introduces the XGraphics objects that PDFsharp applications use for drawing. Object Streams provides information about a PDF feature [...]
Known issues Object Streams are a new feature of PDFsharp 1.50. There [...]